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Record: oai:ARNO:525204

AuthorsJumaat H. Adam, C.C. Wilcock
TitleA new Nepenthes from Mount Ilas Mapulu in Borneo
JournalBlumea - Biodiversity, Evolution and Biogeography of Plants
AbstractCaulis angularis. Folia coriacea, sessilia vel subpetiolata; lamina anguste elliptica vel oblanceolata, apex acutus vel obtusus subpeltatus, basis attenuata, semi-amplexicaulis, non decurrens; nervi longitudinales paralleli 8-10. Ascidia ellipsoidea, cum alis duabus prominentibus; os obliquum. Peristomium applanatum expansum, margo exterior distincte sinuatus, costae distinctae. Inflorescentia mascula racemosa; pedicelli uniflori. — Holotypus: Kostermans 14017 (L – HLB 960.112- 783 & 784), East Borneo, Bcrouw, top of Mt Has Mapulu, alt. 800 m, 23-9-1957.
Stems angular, 5-6 mm thick, internodes 2-4 cm long. Leaves coriaceous, sessile or shortly petiolate; lamina narrowly elliptic or oblanceolate, 13-26 x 2.2-5 cm, apex acute, subpeltate; base attenuate, semi-amplexicaul; longitudinal nerves originating from lower 1/4 of the midrib, running 4-5 on each side; pinnate nerves distinct; tendrils of pitchers flattened, grooved, not curled, wider towards the pitcher, 3-4 mm thick near the pitcher, 1-2 mm thick near the leaf tip, 45-50 cm long, 1 to 2 times longer than lamina length; tendrils without pitchers slender, usually shorter than lamina length, 4-25 cm long. – Pitchers ellipsoidal, 11-21 cm high, 7-8.5 cm wide immediately below peristome, with 2 prominent fringed wings running over the entire length, wings 2-10 mm wide; mouth oblique; peristome flattened, expanded, 2-20 mm wide, broader in the middle, outer peristome margin distincdy wavy, peristome ribs 0.5 mm apart, inner peristome teeth distinct; inside surface of the pitcher glandless in the upper half, glandular with numerous minute glands in the lower half; lids 4.5-8 x 3-4 cm, the lower surface with a central glandular ridge and numerous glands concentrated around the ridge and towards the base, glands on the ridge large and distinct. – Male inflorescence racemose; peduncle 7 cm long; pedicels 4-8 mm long, 1-flowered, bractless; sepals 4, lanceolate, 2.5-3 x 1.5-2 mm; staminal column 2.5-3 mm long; anthers uniseriate. Female inflorescence unknown. Fruits unknown. – Indumentum of very short branched hairs on midribs, tendrils, pitchers, and inflorescences. Leaves glabrous above and below, the lower surface with dark brown spots. Margin of leaves sometimes ciliate.
Document typearticle
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