200. 10. Distichorchis

Key to the species genus Distichorchis

(Modification from J. B. Comber 2001 by Tun Jang)

No.	sub.	Characteristic features of species (Data)	Link photo to species
1	a	Inflorescences exclusively 1-flowered	2
	b	Inflorescences usually with 2 or more flowers	7
2	a	Leaves usually 5 cm long or longer	3
	b	Leaves usually 3.5 cm long or shorter	4
3	a	Lip mid-lobe almost quadrangular in outline, indented a liitle apicaly Modified 19 February 2012	11
	b	Lip midl-lobe almost circular in outline, its apex rounded Endemic	D. refracta
4	a	Lip mid-lobe shortly apiculate; flowers 7.7 mm long. Endemic New Rediscovery 13 February 2012	D. bihamulata
	b	Lip mid-lobe not apiculate; flowers 1.3 cm or more long	5
5	a	Lip with distinct but small side lobes. Endemic	D. barisana
		Lip without distinct side lobes	6
6	a	Lip with a linear claw, lamina with a fold on either side, the apex not indented	D. connatum
	b	Lip with a wedge-shaped claw, lamina without any fold on the sides, its apex slightly indented Modified 19 February 2012	12
7	a	Flowers 5 cm long; dorsal sepal 2.6 cm long	D. igneoniveum
	b	Flowres 2.8 cm long or shorter, dorsal sepal 1.4 cm long or shorter	8
8	a	Petals with erose margins in the apical half	D. siberutense
	b	Petals with entire margins	9
9	a	Lip with 3 parallel ridges	D. mellicolor
	b	Lip with 2 parallel ridges	10
10	a	Lip mid-lobe 11 mm broad when flattened out glabrous	D. pandaneti
	b	Lip mid-lobe 5.5 mm broad when flatenned out, finely hairy	D. metachilinum
11	a	Sepals petals white, petals often rhomboid, margin erose mid love have 3 mark brown ridges	D. uniflora
	b	Sepals petals green-brownish basally, midlobe more wider, ridges same colour with midlobe.	D. quadrisulcata
12	a	small side-lobes, 3 ridges and large patch of irregular warts along most of the lamina	D. bifaria
	b	Mid-lobe have 7-9 close-set ridges	D. excisum