POGONIA. ] ORCH1DACEM. 215 



20. SARCANTHUS. Lindl. ; Fl. Brit. Ind. VI, 66. 



Epiphytic herbs, with usually elongate stems. Leaves fleshy 

 terete or flat. Flowers in extra-axillary racemes or panicles. Sepals 

 subequal, spreading or reflexed, or the dorsal one concave and 

 connivent over the column. Petals smaller than the sepals, spread- 

 ing. Lip adnate to the base of the column, or to its foot, rarely 

 jointed, the base with a funnel-shaped spur sometimes dilated at 

 its apex, the opening more or less occluded by calli on its anterior 

 and posterior walls, and always divided into two lateral compart- 

 ments by a vertical anteio-posterior septum ; lateral lobes small 

 more or less triangular and acute ; apical lobe small, triangular 

 or hastate. Column short, stout, often with a foot as long as or 

 longer than itself. Anther depressed ; pollinia 2, bifid. Species 

 about 35, in E. Trop. Asia. 



S. insectifer, Reichl. f. in Bot. Zeit. 159; F. B. 1. vi, 68 ; 



Duthie Ann. R. Bot. Card. Calc. ix, part 2, 149 ; Prain Beng. PL 



1023. 



Stem 1 ft. or more in length, robust, scandent, flexuous; emitting many 

 elongate fibres. Leaves firmly coriaceous, crowded, almost imbricate, 

 J-2 in. long, distichously spreading, oblong, amplexicaul, apex 

 obtusely 2-lobed. Racemes shorter than the leaves, subsessile, 

 few-flowered, decurved ; rhachis stout ; bracts minute, deciduous. 

 Flowers about in. across ; sepals and petals 3-nerved, yellowish- 

 green, striated with red. Sepals ovate-oblong, obtuse or subacuto. 

 Petals oblong. Lip white and pink, or purple ; side-lobes short ; 

 terminal lobe larger than the sepals, triangular-ovate or cordate. 

 Spur vertically septate, its mouth with a pubescent ridge. Column 

 very short. Anther hemispheric. Pollinia sulcate, attached to a 

 short caudicle broader than long ; gland transverse, membranous. 



N. Oudh, in the Bahraich district (Duthie). Flowers in Sep. DISTEIB. : 

 Garhwal, in the Ramganga valley, also in Chota Nagpur, Behar, 

 Cachar, Chittagong, Sundribans, extending to Tenasserim. 



21. POGONIA, Juss. ; Fl. Brit. Ind. vi, 118. 



Terrestrial unifoliolate tuberous-rooted herbs ; tuber stoloni- 

 ferous, each stolon bearing at its tip a tuber smaller than that 

 of the parent. Leaf broadly cordate or orbicular, strongly plicate, 

 rising from the same tuber as the flowers, but usually after the 



