Nepenthes paniculata

Nepenthes paniculata

Synonymy

Nepenthes paniculata Danser in Bull. Jard. Bot. Buitenzorg, sér. 3, 9: 344, f. 15. 1928 sec. Cheek & Jebb 2001
    • Isotype: New Guinea, Irian Jaya, Doorman Top, alt. 1460 m, 9 Oct 1920, Lam 1569 (BO).
    • Lectotype: New Guinea, Irian Jaya, Doorman Top, alt. 1460 m, 9 Oct 1920, Lam 1569 (BO).
    • Isotype: New Guinea, Irian Jaya, Doorman Top, alt. 1460 m, 9 Oct 1920, Lam 1569 (U).

Other sources

Jebb, M.H.P. 1991: An account of Nepenthes in New Guinea. – Science in New Guinea 17: 7-54: 38, f. 20
Jebb, M.H.P. & Cheek, M.R. 1997: A skeletal revision of Nepenthes. – Blumea 42(1): 1-106: 70

Description

Terrestrial (probably) climber to 7 m tall. Stems terete 0.5-1 cm diam., internodes 3-10 cm long, rosette and short shoots unknown. Leaves coriaceous, petiolate, those of climbing stems with blade narrowly elliptic or lanceolate, 20-30 by 4-7 cm, apex acuminate, base gradually attenuate into a narrowly winged petiole 3-9 cm long, base of petiole a semi-amplexicaul sheath, not decurrent. Longitudinal nerves 3 or 4 on each side, in outer 1/3 of the lamina. Pennate nerves numerous, running obliquely to margin and there forming an irregular network. Lower pitchers unknown. Upper pitchers gradually originating from the tendril, wholly infundibuliform, 8-11 by 3-5 cm, with 2 prominent ribs, occasionally narrowly winged in the upper part, wings fringed; mouth suborbicular, straight, oblique; peristome flattened 4-10 mm broad, ribs 0.5-1 mm apart, outer edge entire, inner conspicuously toothed; lid suborbicular, 4-4.5 by 4.5-5 cm, apex rounded, base cordate, lower surface lacking appendages but with thickened midline, nectar glands small, orbicular, bordered, scattered over the entire surface apart from the margin; spur entire, 3 mm long, apex acute. Male inflorescence c. 30 cm long; peduncle c. 10 cm long, 3 mm diam. at base; partial peduncles 5-flowered at base, c. 3 cm; bracts absent; tepals orbicular-elliptic, 2.5-3.5 mm long; staminal column and anther head c. 2 mm long. Fruit and seed unknown. Indumentum mostly absent; pitchers sparsely brown tomentose when young, glabrous when mature; as is the inflorescence, indumentum persisting only on the pedicels and tepals. Colour of stems and leaves light green, pitchers yellowish green, peristome dark green, inner pitcher with violet spots, lid yellowish green suffused with red below and with violet spots below; peduncle green with a red hue; tepals light green at first, later dark red; androphore light green.A

Notes

This species is closely related to N. neoguineensis and the means of distinguishing them are slight: the partial panicles of the inflorescence are not corymbiform; the upper pitchers are wholly infundibulate, and not narrowed at the mouth, and have much reduced wings; the peristome is broader, more rounded, and has more widely spaced ribs (0.6-1 mm vs. 0.25-0.35 mm); the numerous, large (0.5 mm), lipped glands are present on the upper surface of the leaf sheaths, and scattered along the upper sides of midrib (absent in N. neoguineensis).
Nepenthes paniculata is only known from the type number and more collections and observations are needed. The description above is largely taken from that of Danser in Bull. Jard. Bot. Buitenzorg III 9 (1928) 344.A

Distribution (General)

New Guinea: Irian Jaya (Doorman).A

Habitat

Mossy forest on ridge top; 1460 m.A

Bibliography

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

Specimens

CountryDateCollector + collecting numberHerbariaTypeScanDerivatives
1920-10-09Lam 1569BO(2), U
Citation: New Guinea, Irian Jaya, Doorman Top, alt. 1460 m, 9 Oct 1920, Lam 1569.

Specimen summary: BO
Isotype of Nepenthes paniculata Danser

Specimen summary: U
Isotype of Nepenthes paniculata Danser