Leuconotis anceps

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Leuconotis anceps


Branchlets glabrous to densely minutely puberulent; Leaves: Inflorescence 2.4-11 cm long; Sepals ovate, 1.7-2.5 by 1.2-2.1 mm, 1-1.4 times as long as wide, apex obtuse to rounded, glabrous or with few hairs at top, ciliate. Stamens inserted at 3.5-3.8 mm from corolla base which is 0.4 of tube length; Ovary 0.8-1.2 mm high; Fruit to 6.7 cm long, 4 cm circumference (see note 2), ellipsoid or wider near base, frequently strongly wrinkled when immature, 1- or 2-seeded. Seeds to 5.7 by 3.3 by 2.7 cm.


Asia-Tropical: Borneo present; Malaya (Peninsular Malaysia present); Sumatera (Sumatera present)
Malesia: Sumatra, Peninsular Malaysia, Borneo.


2 Further studies are necessary to understand the fruits of this species. Many of the specimens bear strongly wrinkled and slightly angled 1- or 2-seeded fruits which are apiculate on top. A handful of specimens bear a much larger 1-seeded smooth round-ended fruit. It could be that these larger fruits are merely the mature form and the wrinkled fruits immature. There are no other appreciable differences between the specimens. 3 Almost no flowers of this species are open on the available specimens suggesting either that the open flowers are extremely ephemeral or that they are night flowering when botanists are generally not about their business. 4 The specimens included by Leeuwenberg (2002) in L. anceps from Laos and Vietnam are rather Bousigonia mekongensis Pierre. 1 The limits of this species as defined here are quite different from Leeuwenberg (2002). I have removed many of the specimens he included in L. anceps to L. griffithii and thereby expanded the concept of the species which he called L. elastica, here treated as a synonym of L. griffithii. The two species are most easily distinguished by the indumentum on the inside of the corolla tube which is glabrous in L. anceps and densely pubescent at the base in L. griffithii. In addition, L. anceps tends to have more delicate inflorescences and more secondary veins whilst L. griffithii tends to have more robust and shorter inflorescences and fewer secondary veins, most clearly seen in the specimens previously referred to L. elastica with as few as 2 pairs of secondary veins.


Masam. 1942: Enum. Phan. Born.: 621
Burkill 1916 – In: J. Straits Branch Roy. Asiat. Soc.: 258
Stapf 1894 – In: Trans. Linn. Soc. London: 206
Masam. 1942: Enum. Phan. Born.: 626
Coode et al. 1996: Checklist Pl. Brunei: 27
Markgr. 1971 – In: Blumea: 155
Leeuwenb. 2002 – In: Syst. Geogr. Pl.: 113
Boerl. 1900 – In: Bull. Inst. Bot. Buitenzorg: 7
Merr. 1921: Bibliogr. Enum. Born. Pl.: 494
Miq. 1857 – In: Fl. Ned. Ind.: 397