Nepenthes albomarginata

Nepenthes albomarginata

Synonymy

Nepenthes albomarginata T.Lobb ex Lindl. in Gard. Chron. 1849: 580. 1849 sec. Cheek & Jebb 2001
    • Lectotype (designated by Jebb, M.H.P. & Cheek, M.R. 1997: 161): ic. Gard. Chron. 1849: 580, t. 3. 1849.
  • 1. Jebb, M.H.P. & Cheek, M.R. 1997: A skeletal revision of Nepenthes. – Blumea 42(1): 1-106
  • =Nepenthes laevis C.Morren in Belgique Hort. 2: 234, pl. 40. 1852, syn. sec. Cheek & Jebb 2001 [non Nepenthes laevis Lindl. 18482]
  • 2. Type: not located
  • =Nepenthes tomentella Miq., Fl. Ned. Ind. 1(1): 1075. 1858 syn. sec. Cheek & Jebb 2001
  • =Nepenthes albomarginata var. villosa Hook.f. in de Candolle, Prodr. 17: 103. 1873 syn. sec. Cheek & Jebb 2001
  • =Nepenthes albomarginata var. rubra Macfarl. in Engler, Pflanzenr. IV. 111 (Heft 36): 38. 1908 syn. sec. Cheek & Jebb 2001
  • Nepenthes albocincta var. rubra Hort. ex Macfarl. in Engler, Pflanzenr. IV. 111 (Heft 36): 38. 1908, nom. nud., syn. sec. Cheek & Jebb 2001
  • Nepenthes albomarginata var. typica Beck in Wiener Ill. Gart.-Zeitung 20: 191. 1895, nom. inval., syn. sec. Cheek & Jebb 2001
  • Nepenthes albocincta Hort. ex Macfarl. in Engler, Pflanzenr. IV. 111 (Heft 36): 38. 1908, nom. nud., syn. sec. Cheek & Jebb 2001

Other sources

excl. syn. Nepenthes teysmanniana (Macfarlane, J.M. 1908: pp. 1-92. – In: Engler, A., Pflanzenreich IV. 111 (Heft 36): 37)
Danser, B.H. 1928: – Bull. Jard. Bot. Buitenzorg, sér. 3, 9: 262
Shivas, R.G. 1984: Pitcher Plants of Peninsula Malaysia & Singapore: 25
Nepenthes tomentella Miq.: Miquel, F.A.W. 1862: Sumatra, zijne plantenwereld en hare voortbrengselen: 151 (as Nepenthes tomentella Miq.)
(as a variety of Nepenthes albomarginata) (Beck von Mannagetta und Lerchenau, G. 1895: – Wiener Ill. Gart.-Zeitung 20: 191 (as Nepenthes tomentella Miq.))
Jebb, M.H.P. & Cheek, M.R. 1997: A skeletal revision of Nepenthes. – Blumea 42(1): 1-106: 16
Tamin, R. & Hotta, M. 1986 – In: Hotta, M., Diversity and Dynamics of Plant Life in Sumatra: 80
Phillipps, A. & Lamb, A.L. 1996: Pitcher Plants of Borneo: 65, f. 38
Clarke, C.M. 1997: Nepenthes of Borneo: 62, f. 38 & 39

Description

Terrestrial climber 2(-10) m tall. Stem cylindrical, 0.3-0.5 cm diam., sometimes slightly flexuose, internodes of climbing stems 3-9 cm long. Leaves coriaceous, sessile, narrowly oblanceolate to spathulate, basal rosette leaves 20-36 by 2-3.5 cm, apex ± acute, the basal 4 cm abruptly narrower, ± 1 cm wide; climbing leaves 7-17 by 1.2-2 cm, the basal part often ± abruptly narrower or gradually tapered; apex acute, base not decurrent, clasping half the stem circumference. Longitudinal nerves 1 on each side of the midrib near the margin, inconspicuous. Pennate nerves numerous, held at ± 90° from the midrib, not reaching the marginal vein, inconspicuous. Lower pitchers ellipsoid at base, tapering gradually into the cylindrical upper half, 8.5-15 cm long, 3.5-6 cm wide at base, tapering to 2-3 cm wide above, with two fringed wings to 6 mm broad, extending to above the level of the peristome, the fringed elements to 4 mm long; mouth ± ovate, oblique, straight; peristome ± cylindrical in section, 1 mm wide, with fine, closely spaced ribs, 0.1-0.15 mm apart (with a bright white or pale brown band immediately below the peristome composed of densely packed hairs), outer edge entire, inner edge lacking teeth; lid ovate, c. 4 by 3 cm, lower surface without appendages, nectar glands densely packed, elliptic, crater-like, ± 0.3 mm long; spur simple, 1-3(-7) mm. Upper pitchers as lower pitchers but cylindrical to infundibulate, 7.5-12 by 1.2-3.2 cm or flaring from 0.8(-1.8) cm at base to 3.2(-6) cm at apex; with two ridges to 1 mm broad, occasionally with short wings towards the pitcher mouth, and then usually extending to above the level of the peristome, lacking fringed elements. Male inflorescence 11-45 by 3 cm; peduncle 6-13 cm long, 1.5 mm diam. at base; partial peduncles 20-80, (1- or) 2- (or 3-)flowered, (0-)3(-6) mm long; bracts rarely present; pedicels 14-20 mm long; tepals 1.75-2.5 by 1.2-1.5 mm; androphore 0.7-2 mm long; anther head 0.5-1 by 1 mm. Fruits with valves 25-29 by 2-2.2 mm. Seeds fusiform 10-12 mm long. Indumentum a mixture of small, white, 5-8-armed stellate hairs and large patent sparsely branched red, bristle-like hairs 0.3-0.7 mm long; the stem, lower leaf, pitcher and inflorescence subglabrous to tomentellous with dark coppery hairs when young, later inconspicuous or whitish. Colour of pitchers green, red or green mottled with red, with a conspicuous glistening white band below the mouth.A

Notes

This species is sometimes confused with N. gracilis, but is immediately distinguished from this and all other species by the bright white (less usually brown), narrow band of densely packed silky hairs just below the peristome and the dense long coppery red indumentum on young stems and leaves.
Herbarium specimens fall largely into two forms, those with upper pitchers infundibulate, with a sub-triangular lid, and those with narrow, pencil-like, tubular pitchers with an orbicular lid. Clarke, Nepenthes of Borneo (1997), has drawn attention to the possibility that this species specialises in trapping termites.A

Distribution (General)

Sumatra, Peninsular Malaysia (absent from Singapore) and Borneo.A

Habitat

Lowland kerangas forest, submontane forest or exposed ridge-tops, on limestone or sandstone; sea level to 1100 m.A

Bibliography

A. Cheek, M.R. & Jebb, M.H.P. 2001: Flora Malesiana - Nepenthaceae, Series I, Volume 15

Specimens

CountryDateCollector + collecting numberHerbariaTypeScanDerivatives
ic. Gard. Chron. 1849: 580, t. 3. 1849.
Citation: No Citation available. This specimen either has no or multiple field units.