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Nepenthes hispida

December 20, 2023

Nepenthes hispida (/nɪˈpɛnθiːz ˈhɪspɪdə/; from Latin: hispidus "bristly") is a tropical pitcher plant species native to Borneo. It grows at elevations of 100 to 800 m in kerangas forest.[3] It is known with certainty only from Lambir Hills National Park and surrounding areas.[4]

Nepenthes hispida
An upper pitcher of Nepenthes hispida from Lambir Hills
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Nepenthaceae
Genus: Nepenthes
Species:
N. hispida
Binomial name
Nepenthes hispida
Beck (1895)[2]

Nepenthes hispida is listed as Conservation Dependent on the 2006 IUCN Red List of Threatened Species.[1]

In the wild, N. hispida is only known to hybridise with N. reinwardtiana.[3][5]

Description edit

The stem of N. hispida grows to 6 m in length and 6 mm in diameter. The cylindrical internodes are up to 15 cm long. Leaves are sessile and coriaceous in texture. The lamina is oblanceolate-oblong in morphology and can measure up to 28 cm long and 4 cm wide. The apex of the lamina is acuminate-obtuse and often unequal. The base of the lamina is attenuate, amplexicaul, and often decurrent. Three longitudinal veins run along the lamina on each side of the midrib. Pennate veins are indistinct. Tendrils grow to 15 cm in length.[3]

 
A young rosette plant

The pitchers of N. hispida are rarely more than 15 cm high and 8 cm wide. They are ovoid-ellipsoid in the lower parts and sub-cylindrical in the upper parts. Aerial or upper pitchers are more cylindrical than lower or terrestrial pitchers. Two fringed wings, up to 3 mm wide, run down the front of the pitchers. These wings are often absent in upper pitchers. The opening or mouth of the pitcher is ovate and oblique. The peristome is rounded and up to 12 mm wide. The lid or operculum is ovate-elliptic. An unbranched spur, up to 5 mm long, is inserted at the base of the lid.[3]

Nepenthes hispida has a racemose inflorescence. The peduncle is up to 5 cm long and 1.5 cm thick. The rachis is attenuate and may grow to 10 cm in length. The partial peduncles, which are up to 8 mm long, are two-flowered at the base only, otherwise one-flowered. Sepals are elliptic and up to 4 mm long. Male and female inflorescences are of similar structure.[3]

A very dense indumentum of bristle-like, purple-grey hairs covers the stem. A sparser covering of shorter hairs is present on the inflorescence. Hairs on the surfaces of the leaves are apparently caducous, or shed at an early stage of development.[3]

Distribution and habitat edit

In Nepenthes of Borneo, Charles Clarke writes: "N. hispida has been collected from a number of localities in northern Sarawak and Brunei, where its distribution overlaps with that of N. hirsuta".[3] However, in Pitcher Plants of Sarawak, Clarke and Ch'ien Lee state: "Recent observations of populations of N. hirsuta throughout Sarawak suggest that morphological variation in this species is much greater than previously assumed. Accordingly, the only plants that we equate with N. hispida here are those from the Lambir Hills area".[4]

Nepenthes hispida grows in shady kerangas forest on steep sandstone ridges and is often sympatric with Eugeissona palms.[3][4] The species occurs at elevations of 100 to 800 m.[3]

Taxonomy edit

 
Rosette plants with lower pitchers

Nepenthes hispida is very similar to the closely related N. hirsuta and some taxonomists contest its status as a separate species.[6][7] It is also similar to N. macrovulagris, from which it differs in several aspects of pitcher and leaf morphology.

In his 1928 monograph, "The Nepenthaceae of the Netherlands Indies", B. H. Danser reduced N. hispida to a synonym of N. hirsuta, writing "N. hispida Beck is placed among the synonyms [of N. hirsuta] on the authority of Macfarlane, though the description gives another idea".[8] Matthew Jebb and Martin Cheek restored N. hispida to species status in 1997, citing the amplexicaul-decurrent leaf base and indumentum as significant features that distinguish it from N. hirsuta.[9] It has been suggested that N. hirsuta and N. hispida are extreme variants of the same species, as there exist intergrades between both taxa.[1]

Matthew Jebb and Martin Cheek suggest that N. hispida is related to N. philippinensis, a species endemic to Palawan in the Philippines.[10][11]

In his Carnivorous Plant Database, taxonomist Jan Schlauer treats N. hispida as a heterotypic synonym of N. hirsuta.[7]

References edit

  1. ^ a b c Clarke, C.M.; Cantley, R.; Nerz, J.; Rischer, H.; Witsuba, A. (2000). "Nepenthes hispida". IUCN Red List of Threatened Species. IUCN. 2000: e.T39666A10249804. doi:10.2305/IUCN.UK.2000.RLTS.T39666A10249804.en.
  2. ^ (in German) Beck, G. 1895. Die Gattung Nepenthes. Wiener Illustrirte Garten-Zeitung 20(3–6): 96–107, 141–150, 182–192, 217–229.
  3. ^ a b c d e f g h i Clarke, C.M. 1997. Nepenthes of Borneo. Natural History Publications (Borneo), Kota Kinabalu.
  4. ^ a b c Clarke, C.M. & C.C. Lee 2004. Pitcher Plants of Sarawak. Natural History Publications (Borneo), Kota Kinabalu.
  5. ^ McPherson, S.R. 2009. Pitcher Plants of the Old World. 2 volumes. Redfern Natural History Productions, Poole.
  6. ^ Clarke, C.M. 2006. Introduction. In: Danser, B.H. The Nepenthaceae of the Netherlands Indies. Natural History Publications (Borneo), Kota Kinabalu. pp. 1–15.
  7. ^ a b Schlauer, J. N.d. Nepenthes hispida. Carnivorous Plant Database.
  8. ^ Danser, B.H. 1928. The Nepenthaceae of the Netherlands Indies. Bulletin du Jardin Botanique de Buitenzorg, Série III, 9(3–4): 249–438.
  9. ^ Jebb, M.H.P. & M. Cheek 1997. A skeletal revision of Nepenthes (Nepenthaceae). Blumea 42(1): 1-106.
  10. ^ Cheek, M.R. & M.H.P. Jebb 1999. Nepenthes (Nepenthaceae) in Palawan, Philippines. Kew Bulletin 54(4): 887–895. doi:10.2307/4111166
  11. ^ Schlauer, J. 2000. "Literature Reviews" (PDF). Carnivorous Plant Newsletter 29(2): 53.

Further reading edit

 
Wikimedia Commons has media related to Nepenthes hispida.

December 20, 2023
nepenthes, hispida, from, latin, hispidus, bristly, tropical, pitcher, plant, species, native, borneo, grows, elevations, kerangas, forest, known, with, certainty, only, from, lambir, hills, national, park, surrounding, areas, upper, pitcher, from, lambir, hil. Nepenthes hispida n ɪ ˈ p ɛ n 8 iː z ˈ h ɪ s p ɪ d e from Latin hispidus bristly is a tropical pitcher plant species native to Borneo It grows at elevations of 100 to 800 m in kerangas forest 3 It is known with certainty only from Lambir Hills National Park and surrounding areas 4 Nepenthes hispidaAn upper pitcher of Nepenthes hispida from Lambir HillsConservation statusConservation Dependent IUCN 2 3 1 Scientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsOrder CaryophyllalesFamily NepenthaceaeGenus NepenthesSpecies N hispidaBinomial nameNepenthes hispidaBeck 1895 2 Nepenthes hispida is listed as Conservation Dependent on the 2006 IUCN Red List of Threatened Species 1 In the wild N hispida is only known to hybridise with N reinwardtiana 3 5 Contents 1 Description 2 Distribution and habitat 3 Taxonomy 4 References 5 Further readingDescription editThe stem of N hispida grows to 6 m in length and 6 mm in diameter The cylindrical internodes are up to 15 cm long Leaves are sessile and coriaceous in texture The lamina is oblanceolate oblong in morphology and can measure up to 28 cm long and 4 cm wide The apex of the lamina is acuminate obtuse and often unequal The base of the lamina is attenuate amplexicaul and often decurrent Three longitudinal veins run along the lamina on each side of the midrib Pennate veins are indistinct Tendrils grow to 15 cm in length 3 nbsp A young rosette plantThe pitchers of N hispida are rarely more than 15 cm high and 8 cm wide They are ovoid ellipsoid in the lower parts and sub cylindrical in the upper parts Aerial or upper pitchers are more cylindrical than lower or terrestrial pitchers Two fringed wings up to 3 mm wide run down the front of the pitchers These wings are often absent in upper pitchers The opening or mouth of the pitcher is ovate and oblique The peristome is rounded and up to 12 mm wide The lid or operculum is ovate elliptic An unbranched spur up to 5 mm long is inserted at the base of the lid 3 Nepenthes hispida has a racemose inflorescence The peduncle is up to 5 cm long and 1 5 cm thick The rachis is attenuate and may grow to 10 cm in length The partial peduncles which are up to 8 mm long are two flowered at the base only otherwise one flowered Sepals are elliptic and up to 4 mm long Male and female inflorescences are of similar structure 3 A very dense indumentum of bristle like purple grey hairs covers the stem A sparser covering of shorter hairs is present on the inflorescence Hairs on the surfaces of the leaves are apparently caducous or shed at an early stage of development 3 Distribution and habitat editIn Nepenthes of Borneo Charles Clarke writes N hispida has been collected from a number of localities in northern Sarawak and Brunei where its distribution overlaps with that of N hirsuta 3 However in Pitcher Plants of Sarawak Clarke and Ch ien Lee state Recent observations of populations of N hirsuta throughout Sarawak suggest that morphological variation in this species is much greater than previously assumed Accordingly the only plants that we equate with N hispida here are those from the Lambir Hills area 4 Nepenthes hispida grows in shady kerangas forest on steep sandstone ridges and is often sympatric with Eugeissona palms 3 4 The species occurs at elevations of 100 to 800 m 3 Taxonomy edit nbsp Rosette plants with lower pitchersNepenthes hispida is very similar to the closely related N hirsuta and some taxonomists contest its status as a separate species 6 7 It is also similar to N macrovulagris from which it differs in several aspects of pitcher and leaf morphology In his 1928 monograph The Nepenthaceae of the Netherlands Indies B H Danser reduced N hispida to a synonym of N hirsuta writing N hispida Beck is placed among the synonyms of N hirsuta on the authority of Macfarlane though the description gives another idea 8 Matthew Jebb and Martin Cheek restored N hispida to species status in 1997 citing the amplexicaul decurrent leaf base and indumentum as significant features that distinguish it from N hirsuta 9 It has been suggested that N hirsuta and N hispida are extreme variants of the same species as there exist intergrades between both taxa 1 Matthew Jebb and Martin Cheek suggest that N hispida is related to N philippinensis a species endemic to Palawan in the Philippines 10 11 In his Carnivorous Plant Database taxonomist Jan Schlauer treats N hispida as a heterotypic synonym of N hirsuta 7 References edit a b c Clarke C M Cantley R Nerz J Rischer H Witsuba A 2000 Nepenthes hispida IUCN Red List of Threatened Species IUCN 2000 e T39666A10249804 doi 10 2305 IUCN UK 2000 RLTS T39666A10249804 en in German Beck G 1895 Die Gattung Nepenthes Wiener Illustrirte Garten Zeitung 20 3 6 96 107 141 150 182 192 217 229 a b c d e f g h i Clarke C M 1997 Nepenthes of Borneo Natural History Publications Borneo Kota Kinabalu a b c Clarke C M amp C C Lee 2004 Pitcher Plants of Sarawak Natural History Publications Borneo Kota Kinabalu McPherson S R 2009 Pitcher Plants of the Old World 2 volumes Redfern Natural History Productions Poole Clarke C M 2006 Introduction In Danser B H The Nepenthaceae of the Netherlands Indies Natural History Publications Borneo Kota Kinabalu pp 1 15 a b Schlauer J N d Nepenthes hispida Carnivorous Plant Database Danser B H 1928 The Nepenthaceae of the Netherlands Indies Bulletin du Jardin Botanique de Buitenzorg Serie III 9 3 4 249 438 Jebb M H P amp M Cheek 1997 A skeletal revision of Nepenthes Nepenthaceae Blumea 42 1 1 106 Cheek M R amp M H P Jebb 1999 Nepenthes Nepenthaceae in Palawan Philippines Kew Bulletin 54 4 887 895 doi 10 2307 4111166 Schlauer J 2000 Literature Reviews PDF Carnivorous Plant Newsletter 29 2 53 Further reading editLee C C 2000 Recent Nepenthes Discoveries video The 3rd Conference of the International Carnivorous Plant Society San Francisco USA Mansur M amp F Q Brearley 2008 Ecological studies on Nepenthes at Barito Ulu Central Kalimantan Indonesia Jurnal Teknologi Lingkungan 9 3 271 276 McPherson S R amp A Robinson 2012 Field Guide to the Pitcher Plants of Borneo Redfern Natural History Productions Poole Steiner H 2002 Borneo Its Mountains and Lowlands with their Pitcher Plants Toihaan Publishing Company Kota Kinabalu viii 136 pp Thorogood C 2010 The Malaysian Nepenthes Evolutionary and Taxonomic Perspectives Nova Science Publishers New York nbsp Wikimedia Commons has media related to Nepenthes hispida Retrieved from https en wikipedia org w index php title Nepenthes hispida amp oldid 1170121294, wikipedia, wiki, book, books, library,

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