Nepenthes ×trichocarpa

Synonymy

Nepenthes ×trichocarpa Miq., Fl. Ned. Ind. 1(1): 1072. 1858 sec. Cheek & Jebb 2001

Type: Sumatra, Sibolga, alt. 0 m, Feb 1856, Teijsmann 532 p.p. (BO)
Type: Sumatra, Sibolga, alt. 0 m, Feb 1856, Teijsmann 532 p.p. (L)1
Type: Sumatra, Sibolga, alt. 0 m, Feb 1856, Teijsmann 532 p.p. (U)1

1. n.v. for M. Cheek & M. Jebb, Flora Malesiana - Nepenthaceae, Series I, Volume 15. 2001

=Nepenthes trichocarpa var. erythrosticta Miq. in J. Bot. Neerl. 1(3): 276. 1862 syn. sec. Cheek & Jebb 2001

Type: Sumatra, Sibolga, alt. 0 m, Feb 1856, Teijsmann 533 p.p. (BO)
Type: Sumatra, Sibolga, alt. 0 m, Feb 1856, Teijsmann 533 p.p. (L)2
Type: Sumatra, Sibolga, alt. 0 m, Feb 1856, Teijsmann 533 p.p. (U)2

2. n.v. for M. Cheek & M. Jebb, Flora Malesiana - Nepenthaceae, Series I, Volume 15. 2001

Content

Other sources

Miquel, F. A. W. 1862: – J. Bot. Neerl. 1(3): 275, t. 1

Tamin, R. & Hotta, M. 1986 – In: Hotta, M., Diversity and Dynamics of Plant Life in Sumatra. – Kyoto: Sumatra Nature Study (Botany), Kyoto University: 108

Clarke, C. M. 1997: Nepenthes of Borneo. – Kota Kinabalu: Natural History Publications: 150, f. 104

Jebb, M. H. P. & Cheek, M. R. 1997: A skeletal revision of Nepenthes. – Blumea 42(1): 1-106: 87

Danser, B. H. 1928: – Bull. Jard. Bot. Buitenzorg, sér. 3, 9: 389

Phillipps, A. & Lamb, A.L. 1996: Pitcher Plants of Borneo: 140, f. 75

Description

Nepenthes trichocarpa_{has sessile leaves which exhibit N. ampullaria_{-like venation, texture and hairiness, whilst the angular stem, with sub-decurrent leaf bases and the lid with its few, broad-bordered glands are similar to those of N. gracilis. The pitchers are characteristically barrel-shaped and slightly constricted at the mouth.A}}

Notes

Holttum was the first to suggest that this species was a hybrid between N. ampullaria and N. gracilis. As with N.hookeriana this supposition is based upon the fact that it only occurs in mixed populations of the parent species.
At Bogor several duplicates of Teijsmann’s Sibolga collections exist; of these one duplicate of 532 represents N.trichocarpa, the remaining 2 sheets are N. gracilis. Of 533, one fragmented sheet may be N. gracilis, while the two other sheets are annotated N. trichocarpa var. erythrosticta, characterised by its larger size. Danser (1928) states that the number 532 represents authentic specimens of the var. erythrosticta, however. Without viewing the Utrecht specimens it is impossible to be certain of Miquel’s designation, since Teijsmann’s collections are mixed, and Miquel refers to no numbers in his protologues.A

Distribution (General)

Rare but widespread in Sumatra, Peninsular Malaysia, Singapore, Borneo.A

Habitat

Nearly always in mixed populations of N. ampullaria and N. gracilis, its putative parents; sea level to 800 m.A

Hybrid parent formula

N. ampullaria × N. gracilisB

Bibliography

A. Cheek, M. R. & Jebb, M. H. P. 2001: Flora Malesiana - Nepenthaceae, Series I, Volume 15. – Leiden: Nationaal Herbarium Nederland, Universiteit Leiden branch
B. Jebb, M. H. P. & Cheek, M. R. 1997: A skeletal revision of Nepenthes. – Blumea 42(1): 1-106

Specimens

Country	Date	Collector + collecting number	Herbaria
	1856-02	Teijsmann 532 p.p.	BO, L, U
Citation: Sumatra, Sibolga, alt. 0 m, Feb 1856, Teijsmann 532 p.p. Specimen summary: BO Type for: Nepenthes ×trichocarpa Miq. Specimen summary: L Type for: Nepenthes ×trichocarpa Miq. Specimen summary: U Type for: Nepenthes ×trichocarpa Miq.
	1856-02	Teijsmann 533 p.p.	BO, L, U
Citation: Sumatra, Sibolga, alt. 0 m, Feb 1856, Teijsmann 533 p.p. Specimen summary: BO Type for: Nepenthes trichocarpa var. erythrosticta Miq. Specimen summary: L Type for: Nepenthes trichocarpa var. erythrosticta Miq. Specimen summary: U Type for: Nepenthes trichocarpa var. erythrosticta Miq.