Borneocola petiolatus (K.Schum.) Y.Y.Sam, 2016

Sam, Yen Yen, Takano, Atsuko, Ibrahim, Halijah, Zaveska, Eliska & Aziz, Fazimah, 2016, Borneocola (Zingiberaceae), a new genus from Borneo, PhytoKeys 75, pp. 31-55 : 40

publication ID	https://dx.doi.org/10.3897/phytokeys.75.9837
persistent identifier	https://treatment.plazi.org/id/6368B8D6-AAE1-5917-90E1-8B17D274C70C
treatment provided by	PhytoKeys by Pensoft
scientific name	Borneocola petiolatus (K.Schum.) Y.Y.Sam
status	comb. nov.

Treatment

5. Borneocola petiolatus (K.Schum.) Y.Y.Sam comb. nov.

Haplochorema petiolatum K.Schum. in Engler, Pflanzenr. IV, 46 (Heft 20): 90 (1904). Scaphochlamys petiolata (K.Schum.) R.M.Sm., Notes Roy. Bot. Gard. Edinburgh 44: 210 (1987).

Type.

MALAYSIA. Sarawak, First Division, Mt. Singhi (= Gunung Singai), Dec 1892, Haviland 2026 (lectotype: K! designated by Searle 2010; isolectotype: E!, SAR!) .

Notes.

Borneocola petiolatus is distinguished by its long petiole and narrow leaves from the other species. Its lamina length is almost 3 times the width (12-21.5 × 3.1-7.1 cm). Smith (1987) found that Borneocola petiolatus has small inflorescences as in Borneocola argenteus . However, both can be easily separated by their leaf characters. Borneocola petiolatus has much longer petioles compared to Borneocola argentea (12.7-31.5 cm versus 3-6 cm). Borneocola argenteus also has prominently raised lateral veins on the adaxial surface of lamina, more conspicuous on dried specimens than fresh materials. This character is lacking in Borneocola petiolatus .