Nepenthes northiana
4656021
223638394
2008-07-05T00:46:55Z
Lightbot
7178666
Units/dates/other
{{Taxobox
| name = ''Nepenthes northiana''
| status = VU
| status_system = iucn2.3
| image = N.northaiana.jpg
| image_width = 200px
| image_caption = Lower pitcher of ''Nepenthes northiana'' from the Bau region of Sarawak
| regnum = [[Plant]]ae
| divisio = [[Magnoliophyta]]
| classis = [[Magnoliopsida]]
| ordo = [[Caryophyllales]]
| familia = [[Nepenthaceae]]
| genus = ''[[Nepenthes]]''
| species = '''''N. northiana'''''
| binomial = ''Nepenthes northiana''
| binomial_authority = [[Joseph Dalton Hooker|Hook.f.]] (1881)
| synonyms =
*''Nepenthes decurrens''<br><small>[[John Muirhead Macfarlane|Macfarl.]] (1925)</small>
*''Nepenthes nordtiana''<br><small>[[Jacob Gijsbert Boerlage|Boerl.]] (1900) ''sphalm.typogr.''</small>
*''Nepenthes spuria''<br><small>[[Günther von Mannagetta und Lërchenau Beck|Beck]] (1895) ''nom.illeg.''</small>
}}
'''''Nepenthes northiana''''' ({{pronEng|nəˈpɛnθiːz nɔːθiːˈɑːnə}}), or '''Miss North's Pitcher-Plant''',<ref name=P&L>Phillipps, A. & A. Lamb 1996. ''Pitcher-Plants of Borneo''. Natural History Publications (Borneo), Kota Kinabalu.</ref> is a tropical [[pitcher plant]] [[endemism|endemic]] to [[Borneo]], where it grows at elevations ranging from 0 to 500 m above sea level. The [[specific epithet]] ''northiana'' honours [[Marianne North]], who first illustrated the species. ''N. northiana'' is one of the most famous ''Nepenthes'' and its discovery in the latter half of the 19th century contributed to [[Sarawak]]'s reputation as a land of spectacular exotic plants.<ref name=Sarawak>Clarke, C.M. & C.C. Lee 2004. ''Pitcher Plants of Sarawak''. Natural History Publications (Borneo), Kota Kinabalu.</ref>
{{TOClimit|limit=2}}
==Botanical history==
''N. northiana'' was first brought to the attention of the scientific community by [[Marianne North]], who painted plants brought to her from the Bau area. [[Harry Veitch]], owner of [[James Veitch & Sons]], recognised these as belonging to an as yet undescribed species and arranged for seeds to be collected and sent to the [[United Kingdom of Great Britain and Ireland|United Kingdom]]. The species was subsequently named after Marianne North in 1881 by [[Joseph Dalton Hooker]].<ref name=Hooker>Hooker, J.D. 1881. ''Nepenthes Northiana'', sp.nov.. ''The Gardeners' Chronicle'' '''16'''(2): 717, 724–725.</ref> The [[type specimen]], ''M.North s.n.'', was collected near [[Jambusan]] in [[Sarawak]] in 1876. It is deposited at the [[Royal Botanic Gardens, Kew]].<ref name=Hooker /><ref name=Schlauer />
[[Image:Nepenthes northiana by Marianne North.jpg|thumb|left|Marianne North's painting of ''N. northiana'', showing a lower and an upper pitcher]]
In her autobiography ''Recollections of a Happy Life'', the first edition of which bears a [[Gilding|gilt]] outline of ''N. northiana'' on its cover, North wrote the following account of the species's discovery:<ref>North, M. 1892. ''Recollections of a Happy Life''. Macmillan, London.</ref>
<blockquote>"Mr E. [Everett] went up a mountain near and brought me down some grand trailing specimens of the largest of all pitcher-plants, which I festooned round the balcony by its yards of trailing stems. I painted a portrait of the largest, and my picture afterwards induced Mr Veitch to send a traveller to seek the seeds, from which he raised plants and Sir Joseph Hooker named the species ''Nepenthes northiana''. These pitchers are often over a foot long, and richly covered with crimson blotches."</blockquote>
In 1896, ''[[The Gardeners' Chronicle]]'' further elaborated on the discovery:<ref>[Anonymous] 1896. ''The Gardeners' Chronicle'' '''20''': 717.</ref><ref name=P&L />
<blockquote>"The specimen from which Miss North's drawing was made was procured by Mr Herbert Everett of the Borneo Company who 'traversed pathless forests amid snakes and leeches to find and bring it down to the artist.' 'Only those', writes Miss North, 'who have been in such places can understand the difficulties of progress there. The specimens grew on the branches of a tree about 1000 ft above the sea on the limestone mountains of Sarawak. When I received them I tied them in festoons all around the verandah and grumbled at having only one small half-sheet of paper left to paint them on.'"</blockquote>
North's painting of ''N. northiana'' is now on display at the Marianne North Gallery at the [[Royal Botanic Gardens, Kew]].<ref name=Macfarlane />
In the decades following its discovery, ''N. northiana'' was featured in a number of botanical publications. In 1882, [[Frederick William Burbidge]] wrote that he "firmly believes" ''N. northiana'' to be a [[hybrid (biology)|hybrid]] between ''[[Nepenthes sanguinea|N. sanguinea]]'' and ''[[Nepenthes veitchii|N. veitchii]]''.<ref>Burbidge, F.W. 1882. Notes on the new ''Nepenthes''. ''The Gardeners' Chronicle'' '''17'''(1): 56.</ref> However, subsequent authors realised that this hypothesis was erroneous when it became apparent that ''N. sanguinea'' is altogether absent from Borneo.<ref name=Danser /> In 1884, [[Eduard August von Regel]] published a short article on ''N. northiana'' in the journal ''Gartenflora''.<ref>Regel, E.A.v. 1884. ''Nepenthes Northiana'', Hook. f.. ''Gartenflora'' '''33''': 51–52.</ref> In 1895, [[Günther von Mannagetta und Lërchenau Beck]] described ''N. spuria''.<ref>Beck, G.v.M.u.L. 1895. Die Gattung ''Nepenthes''. ''Wiener Illustrierte Gartenzeitung''.</ref> This [[taxon]] is a ''[[nomen illegitimum]]'' and is now considered synonymous with ''N. northiana''.<ref name=Schlauer>Schlauer, J. 2006. [http://www.omnisterra.com/bot/cp_home.cgi?name=Nepenthes+northiana&submit=Submit+Query&search=all ''Nepenthes northiana'']. Carnivorous Plant Database.</ref> In his ''Handleiding tot de kennis der flora van Nederlandsch Indië'' of 1900, [[Jacob Gijsbert Boerlage]] mentioned a certain ''N. nordtiana''.<ref>Boerlage, J.G. 1900. ''Nepenthes''. In: ''Handleiding tot de kennis der flora van Nederlandsch Indië'', Volume 3, Part 1. pp. 53–54.</ref> This name is considered a ''sphalma typographicum'' (misprint) of ''N. northiana''.<ref name=Schlauer />
The next major [[taxonomy|taxonomic]] treatment of the species came in 1908, when [[John Muirhead Macfarlane]] revised the genus and provided an emended description of ''N. northiana''.<ref name=Macfarlane>Macfarlane, J.M. 1908. Nepenthaceae. In: A. Engler. ''Das Pflanzenreich IV'', III, Heft 36: 1–91.</ref>
A year later, [[René Jarry-Desloges]] described the [[Variety (botany)|variety]] ''Nepenthes northiana'' var. ''pulchra'',<ref>Desloges, J. 1909. ''Journal de la Societe Imperiale et Centrale d'Horticulture de France'', Série IV, '''10''': 595.</ref> but it is not considered valid today.
===''Nepenthes decurrens''===
{{Location map
|Borneo Topography
|label=
|lat=1.416667
|long=110.15
|position=left
|width=300
|float=right
|caption=Location of Bau, Sarawak, to which ''N. northiana'' is endemic
}}
''N. decurrens'' was described by [[John Muirhead Macfarlane]] in 1925.<ref name=Macf>Macfarlane, J.M. 1925. A new species of ''Nepenthes'' from Borneo (''Nepenthes decurrens''). ''Bulletin of Miscellaneous Information (Royal Gardens, Kew)'': 35–37.</ref> The description was based on ''Hewitt 100'', a specimen collected by [[John Hewitt (herpetologist)|John Hewitt]] from the [[Baram River]] in [[Sarawak]] around September, 1907.<ref>van Steenis-Kruseman, M.J., ''et al.'' 2006. [http://www.nationaalherbarium.nl/FMCollectors/H/HewittJ.htm Cyclopaedia of Malesian Collectors: John Hewitt]. Nationaal Herbarium Nederland.</ref> Like the type specimen of ''N. northiana'', it is deposited at the [[Royal Botanic Gardens, Kew]].<ref name=Macf /><ref name=Schlauer />
In his seminal 1928 monograph "[[The Nepenthaceae of the Netherlands Indies]]", [[B. H. Danser]] treated the two [[taxon|taxa]] as separate species, although with some hesitation. He explained the taxonomic situation as follows:<ref name=Danser>Danser, B.H. 1928. The Nepenthaceae of the Netherlands Indies. ''Bulletin de Jardin de Botanique, Buitenzorg'', Série III, '''9'''(3–4): 249–438.</ref>{{Ref_label|A|I|none}}{{Ref_label|B|II|none}}
<blockquote>"I have seen type material of this species [''N. decurrens''] in the Herbarium of the Sarawak Museum: 2 pitcher-bearing leaves, torn from the stem in such a way, that the manner, in which they are inserted on it, is no longer visible.
<p>
The pitchers show a great resemblance with those of the drawing of ''N. Northiana'' in The Gardeners' Chronicle, 1881, 2, between p. 724 and 725. This drawing shows 2 keels on the lid and wings over the whole pitchers, even over the curved part, but these are insignificant differences. According to the descriptions, the stems of ''N. Northiana'' are less thick than those of ''N. decurrens'', and the leaves are sessile, but this too is not so important a difference as it seems. The most important difference is in the inflorescences. ''N. Northiana'' has a loose-flowered triangular raceme, with 2 to 3 mm long pedicels, ''N. decurrens'' has a long and coarse raceme, with long pedicels (the description of both inflorescences is very imperfect). Therefore it is impossible for me to determine the 3 above mentioned inferior pitchers, I found in the Sarawak Herbarium, and collected by Everett in 1892. This Mr. Everett may be the same which collected ''N. Northiana'' for Marianne North and therefore it seems possible that the 3 pitchers mentioned are the basal ones of the latter species. They are ovate-ellipsoidal, resp. 23, 24 and 26 cm high, 10, 11 and 10 cm wide, widest about, or somewhat below the middle ; the peristomes are as in ''N. decurrens'', resp. 3, 4 and 2 1/2 cm broad, the mouth is very oblique, occupying about half the height of the pitcher, the lid has one median keel, but is crumpled, and the form, though not well visible, seems to be that of ''N. decurrens''."</blockquote>
Subsequent authors have not considered these differences to be sufficient for species status and ''N. decurrens'' is now treated as a [[heterotypic synonym]] of ''N. northiana''.<ref>Adam, J.H. & C.C. Wilcock 1992. ''Nepenthes mirabilis'' (Loureiro) Druce from Borneo. ''Malayan Nature Journal'' '''46'''(2): 75–84.</ref><ref name=J&C>Jebb, M.H.P. & M.R. Cheek 1997. A Skeletal Revision of ''Nepenthes'' (Nepenthaceae). ''Blumea'' '''42'''(1): 1–106.</ref><ref name=Clarke>Clarke, C.M. 1997. ''Nepenthes of Borneo''. Natural History Publications (Borneo), Kota Kinabalu.</ref>
==Description==
''N. northiana'' is a climbing plant. The stem may attain a length of 10 m and is up to 15 mm in diameter. [[Internode]]s are up to 25 cm long and cylindrical to triangular<ref name=T&M>Turnbull, J.R. & A.T. Middleton 1988. A new species of ''Nepenthes'' from Sabah, Malaysia. ''Botanical Journal of the Linnean Society'' '''96'''(4): 351–358.</ref> in cross section.<ref name=Clarke />
[[Image:Nepenthes northiana.jpg|thumb|left|220px|Rosette plant with a lower pitcher]]
The leaves of this species are [[wikt:chartaceous|chartaceous]] and [[wikt:sessile|sessile]] to sub-[[wikt:petiolate|petiolate]]. The [[lamina]] is oblong-[[wikt:obovate|obovate]] in shape and up to 40 cm long by 10 cm wide. It has an acute apex and is gradually [[wikt:attenuate|attenuate]] towards the base. The base is semi-[[wikt:amplexicaul|amplexicaul]] and [[wikt:decurrent|decurrent]] into a pair of wings. Up to 4 longitudinal veins are present on either side of the [[midrib]]. [[wikt:pinnate|Pinnate]] veins are indistinct. Between 30 and 60 [[nectar]] glands are present on the lower surface of the lamina.<ref name=Danser /> [[Tendril]]s are up to 100 cm long.<ref name=Clarke />
Rosette and lower pitchers are generally ovoid, sometimes being slightly cylindrical in the upper part. They are some of the largest in the genus, reaching 40 cm in height<ref name=P&L /> and 15 cm in width. Exceptionally large pitchers can hold more than a [[quart]] (946 ml) of fluid.<ref name=Hansen>Hansen, E. 2001. [http://discovermagazine.com/2001/oct/featplants Where rocks sing, ants swim, and plants eat animals: finding members of the ''Nepenthes'' carnivorous plant family in Borneo]. ''Discover'' '''22'''(10): 60–68.</ref> A pair of fringed wings (≤15 mm) runs down the front of the pitcher. The pitcher mouth is ovate, slightly raised towards the rear, and has an oblique insertion. The impressive [[peristome]] of this species is greatly expanded at the sides (≤25 mm wide) and often has [[wikt:undulate|undulate]] margins. Its inner edge is lined with short but distinct teeth. The lid or [[operculum (botany)|operculum]] is ovate to oblong in shape, lacks appendages, and has an acute apex. An unbranched [[spur (biology)|spur]] (≤20 mm long) is inserted near the base of the lid. Upper pitchers are similar to their lower counterparts but differ in being [[wikt:infundibular|infundibular]] throughout. The wings are often retained in aerial pitchers, although they may be reduced to ribs.<ref name=Clarke />
{| align=right style="margin: 0 0 0 1em"
| [[Image:Nep northiana.jpg|thumb|center|180px|Lower pitcher measuring 40 cm]]
| [[Image:N.northiana, upper pitcher.jpg|thumb|195px|center|Typical upper pitcher]]
|}
''N. northiana'' has a [[raceme|racemose]] [[inflorescence]]. The [[peduncle (botany)|peduncle]] is up to 60 cm long, while the [[rachis]] is up to 40 cm long, although male inflorescences are generally shorter. Partial peduncles are mostly two-flowered and reach 50 mm in length. The seeds of ''N. northiana'' are quite atypical of the genus in that they have short appendages, a large [[embryo]], and are unusually woody in texture. Their structure prevents them from being carried large distances by wind.<ref name=Clarke /> The species lacks a distinct [[indumentum]], as all parts of the plant are virtually [[wikt:glabrous|glabrous]].<ref name=Clarke />
The stem and leaves are light green. The pitchers are greenish-white in colour with numerous red blotches. The peristome is white to red with darker stripes.<ref name=Clarke />
==Ecology==
''N. northiana'' is [[endemism|endemic]] to the [[Kuching Division]] of [[Sarawak]],<ref name=Sarawak /> particularly the hills around the village of [[Bau, Sarawak|Bau]]. The species has an altitudinal distribution of 0 to 500 m above sea level and is restricted to [[limestone]] [[Substrate (biology)|substrate]]s.<ref name=Clarke />
[[Image:Bau N. northiana habitat 2.jpg|thumb|left|220px|''N. northiana'' growing in large clumps on the limestone cliffs of Bau]]
''N. northiana'' generally grows in exposed sites on near-vertical limestone cliffs with permanent water seepage.<ref name=IUCN /> Less commonly it occurs in secondary vegetation on small hills.<ref name=Clarke /> It is sympatric with other limestone [[flora]] such as [[Alocasia longiloba|''Alocasia longiloba'' var. ''lowii'']].<ref name=Steiner>Steiner, H. 2002. ''Borneo: Its Mountains and Lowlands with their Pitcher Plants''. Toihaan Publishing Company, Kota Kinabalu.</ref>
The [[conservation status]] of ''N. northiana'' is listed as [[Vulnerable species|Vulnerable]] on the [[IUCN Red List|2006 IUCN Red List of Threatened Species]] based on an assessment carried out in 2000.<ref name=IUCN>Schnell, D., P. Catling, G. Folkerts, C. Frost, R. Gardner, ''et al.'' 2000. [http://www.iucnredlist.org/search/details.php/40115/all ''Nepenthes northiana'']. ''2006 [[IUCN Red List|IUCN Red List of Threatened Species]]''. [[World Conservation Union|IUCN]] 2006. Retrieved on 11 May 2006. Listed as Vulnerable (VU B1+2e v2.3).</ref> This agrees with the informal classification of the species made by botanist [[Charles Clarke (botanist)|Charles Clarke]] in 1997.<ref name=Clarke /> However, it differs from the assessment by the [[World Conservation Monitoring Centre]], which classified ''N. northiana'' as "[[endangered species|endangered]]".<ref>Simpson, R.B. 1995. ''Nepenthes'' and Conservation. ''Curtis's Botanical Magazine'' '''12''': 111–118.</ref>
[[Quarry]]ing activity has damaged several of the hills on which ''N. northiana'' grows, although this has apparently not affected the plants directly.<ref name=Clarke /> In addition, natural populations of ''N. northiana'' have suffered from over-collection in recent years.<ref name=Hansen /> Plants of this species have a high commercial value<ref>Abdullah, J. 2005. [http://www.apafri.org/8thdip/Session%204/S4_Julaihi.doc Altitudinal analyses of dipterocarps of limestone vegetation in Sarawak]. Forest Research Centre, Sarawak Forestry Corporation.</ref> and are thus highly sought after by collectors. In their 1996 monograph ''Pitcher-Plants of Borneo'', [[Anthea Phillipps]] and [[Anthony Lamb]] wrote that ''N. northiana'' "has been over-collected nearly to the point of extinction".<ref name=P&L /> Despite this, the short term future of the species appears to be secure, as most remaining plants are inaccessible to collectors.<ref name=Clarke />
==Related species==
''N. northiana'' is very similar to ''[[Nepenthes mapuluensis|N. mapuluensis]]'', a species known from only a handful of limestone peaks in [[East Kalimantan]], on the other side of Borneo.<ref>Adam, J.H. & C.C. Wilcock 1990. A new ''Nepenthes'' from Mount Ilas Mapulu in Borneo. ''Blumea'' '''35''': 265–267.</ref> Although there are few morphological characters separating these two [[taxon|taxa]], there seem to be several stable differences that can be used to distinguish between them. Compared to ''N. northiana'', the leaves on the climbing stems of ''N. mapuluensis'' are more linear, the pitchers darker in colour, and the upper pitchers narrower.<ref name=Clarke /><ref name=Steiner /> It is also worth noting that ''N. northiana'' is known only from the [[Bau, Sarawak|Bau]] area of [[Sarawak]], which lies several hundred kilometres away from the only known populations of ''N. mapuluensis''.
''N. northiana'' has also been compared to ''[[Nepenthes macrovulgaris|N. macrovulgaris]]''.<ref>Turnbull, J.R. & A.T. Middleton 1981. ''A preliminary review of the Sabah species of Nepenthes, including a regional list and some selected localities''. Unpublished mimeograph report to the Sabah Parks Trustees.</ref><ref name=T&M /> The two species have a similarly shaped lamina and petiole, but ''N. northiana'' differs in that the climbing stem can be triangular in cross section, as opposed to strictly cylindrical in ''N. macrovulgaris''. In addition, the latter species does not have [[wikt:decurrent|decurrent]] leaf bases.<ref name=T&M /><ref name=Clarke />
''[[Nepenthes hurrelliana|N. hurrelliana]]'' and ''[[Nepenthes veitchii|N. veitchii]]'' are superficially similar to ''N. northiana'', but both of these species are smaller and less vividly coloured.<ref name=Sarawak />
==Natural hybrids==
{| align=right style="margin: 0 0 0 1em"
| [[Image:Nepenthes cincta.jpg|thumb|center|Upper pitcher of ''N. × cincta'']]
| [[Image:Bauensis1.jpg|thumb|center|Upper pitcher of ''N. × bauensis'']]
|}
[[Image:Serian N. northiana X mirabilis 2.jpg|thumb|Upper pitcher of ''N. mirabilis'' × ''N. northiana'']]
''N. northiana'' is known to [[Hybrid (biology)|hybridise]] with three other ''Nepenthes'' species.
===''N. albomarginata'' × ''N. northiana''===
{{main|Nepenthes × cincta}}
''N. × cincta'' is a rare plant and, due to the localised distribution of ''N. northiana'', only grows at a few sites in [[Bau, Sarawak]], usually on a [[Substrate (biology)|substrate]] of [[limestone]]. The traits of ''N. albomarginata'' are very dominant in this hybrid; the wide flared peristome of its larger parent species (''N. northiana'') is almost completely lost. Pitchers are narrowly infundibulate (funnel-shaped) throughout and range in colouration from cream to dusky purple with red or black spots.<ref name=Sarawak />
===''N. gracilis'' × ''N. northiana''===
{{main|Nepenthes × bauensis}}
''N. ×bauensis'' is intermediate in appearance between its two parent species. It displays the clumping habit and vine growth of ''N. gracilis'', but can be distinguished from that species on the basis of its larger leaves and stems. The influence of ''N. northiana'' is most obvious in the pitcher morphology. In particular, the [[peristome]] is wider than in ''N. gracilis'' and has scattered red bands. Pitchers are up to 15 cm high and may be pale green to purplish-red in colour.<ref>Lee, C.C. 2004. ''Nepenthes''. In: Sarawak Bau Limestone Biodiversity. H.S. Yong, F.S.P. Ng and E.E.L. Yen (eds). ''The Sarawak Museum Journal'' Vol. LIX, No. 80; Special Issue No. 6: 71–77.</ref>
Like its parent species, ''N. × bauensis'' is a lowland plant that grows at an elevation of around 100 m. It is terrestrial in nature and inhabits swampy areas surrounding the limestone hills to which ''N. northiana'' is [[endemism|endemic]].
This hybrid appears to be very rare and only a few plants have been found. It is known from a single location.
===''N. mirabilis'' × ''N. northiana''===
''N. mirabilis'' × ''N. northiana'' is a relatively rare natural hybrid and was only discovered in 2007.<ref>Lee, C.C. 2007. [http://pitcherplants.proboards34.com/index.cgi?board=nepwild&action=display&thread=1176119599&page=1#1176168406 Re: The most accessible limestone hill of Bau]. Carnivorous Plants in the tropics.</ref>
==Cultivation==
''N. northiana'' has a reputation amongst ''Nepenthes'' growers for being difficult to cultivate.<ref name=trip>Hopkins, M., R. Maulder & B.[R.] Salmon 1990. {{PDFlink|[http://www.carnivorousplants.org/cpn/articles/CPNv19n1_2p19_28.pdf A real nice trip to Southeast Asia.]|1.72 [[Mebibyte|MiB]]<!-- application/pdf, 1808573 bytes -->}} ''[[Carnivorous Plant Newsletter]]'' '''19'''(1–2): 19–28.</ref><ref name=Shafer>Shafer, J. 2003. {{PDFlink|[http://www.carnivorousplants.org/cpn/articles/CPNv32n2p49_51.pdf Cultivation of ''Nepenthes northiana''.]|561 [[Kibibyte|KiB]]<!-- application/pdf, 575385 bytes -->}} ''[[Carnivorous Plant Newsletter]]'' '''32'''(2): 49–51.</ref> For some time it was speculated that a potting medium involving [[limestone]] was necessary to successfully cultivate the species, but this is apparently not the case.<ref name=Shafer /> It appears to grow well in low light conditions, with direct sunlight resulting in brown patches of dead tissue on the leaves and a decline or cessation in pitcher production. The species is also sensitive to fluctuations in [[relative humidity]] and grows best in moist environments.<ref name=Shafer />
In ''The Savage Garden'', [[Peter D'Amato]] writes that [[peat moss|peat]] and ''[[Sphagnum]]'' [[moss]] stunt the growth of ''N. northiana''. He notes that a good [[alkali]]ne medium for this species consists of two parts coarse [[vermiculite]] to one part each of [[perlite]], [[pumice]], and [[sand]].<ref>D'Amato, P. 1998. ''The Savage Garden: Cultivating Carnivorous Plants''. Ten Speed Press, Berkley, California.</ref> Other growers have reported that the choice of growing medium is apparently of little consequence.<ref name=Shafer />
==Notes==
<div class="references-small">
'''<small>I</small>.''' {{Note_label|A|I|none}}The [[Latin]] description of ''N. northiana'' from Danser's monograph reads:<ref name=Danser />
<blockquote>''Folia mediocria'' sessilia, lamina elliptica v. obovata, nervis longitudinalibus utrinque 4, basi lata semiamplexicauli in alas 2 decurrente ; ''ascidia rosularum'' ignota ; ''ascidia inferiora'' subovata, alis 2 fimbriatis ; peristomio applanato v. expanso, 10-50 mm lato, costis crebris, dentibus brevibus ; operculo ovato-oblongo, facie inferiore non appendiculato ; ''ascidia superiora'' infundibuliformia, alis 2 angustis fimbriatis, peristomio angustiore quam in ascidiis inferioribus, costis crebris, operculo angustiore quam in ascidiis inferioribus, facie inferiore inappendiculata ; ''inflorescentia'' racemus longus pedicellis 2-4 mm longis 2- v. 1-floris ; ''indumentum'' parcum (v. 0 ?).</blockquote>
'''<small>II</small>.''' {{Note_label|B|II|none}}The [[Latin]] description of ''N. decurrens'' from Danser's monograph reads:<ref name=Danser />
<blockquote>''Folia mediocria'' petiolata, lanceolata, nervis longitudinalibus utrinque 5-6, vagina in alas 2 basi peltatas decurrente ; ''ascidia rosularum'' et ''inferiora'' ignota ; ''ascidia superiora'' magna, tubulosa v. infundibuliformia ; parte inferiore costis 2 prominentibus, os versus alis 2 fimbriatis ; peristomio expanso, 25-60 mm lato, costis c. 1 mm distantibus, dentibus vix longioribus quam latis ; operculo ovato, facie inferiore plana v. prope basin obtuse carinata ; ''inflorescentia'' racemus longus pedicellis longis fere omnibus 2-floris ; ''indumentum'' in caulibus foliisque fere 0, in ascidiis adpressum parcum in inflorescentiis tenue densum ferrugineum.</blockquote>
</div>
==References==
{{reflist|2}}
==External links==
{{commons}}
* Danser, B.H. 1928. [http://www.omnisterra.com/botany/cp/pictures/nepenthe/dansermg/dans20.htm 10. ''Nepenthes decurrens'' MACF.] In: The Nepenthaceae of the Netherlands Indies. ''Bulletin de Jardin de Botanique, Buitenzorg'', Série III, '''9'''(3–4): 249–438.
* Danser, B.H. 1928. [http://www.omnisterra.com/botany/cp/pictures/nepenthe/dansermg/dans41.htm 31. ''Nepenthes Northiana'' HOOK. F.] In: The Nepenthaceae of the Netherlands Indies. ''Bulletin de Jardin de Botanique, Buitenzorg'', Série III, '''9'''(3–4): 249–438.
{{Nepenthes}}
[[Category:Carnivorous plants of Asia]]
[[Category:Nepenthes]]
[[lt:Spalvingasis ąsotenis]]