132 cxxxiii. ORCHiDEiE (rolfe). [Saccolohium, 



IG. SACCOLABIUM, Blume; Benth. et Hook. f. Gen. PL iii. 078. 



Sepals subequal, free, spreading, sometimes fleshy. Petals similar to 

 the sepals or nearly so. Lip affixed to the base of the column, and con- 

 tinuous with it, saccate or calcarate at the base; side lobes erect, 

 usually small, sometimes nearly obsolete ; front lobe erect or spreading, 

 oblong or rounded, sometimes very fleshy, generally shorter than the 

 spur ; disc smooth or with a small appendage at the mouth of the spur. 

 Column short, broad, sometimes very broad, without wings, and foot- 

 less ; clinandrium truncate or nearly so. Anther terminal, operculate,' 

 incumbent, convex, obtuse or subacute, 1 -celled or imperfectly 2 -celled ; 

 pollinia 2, subglobose, entire, sulcate or bipartite, attached to a slender, 

 linear or clavate stipes, with small squamiform gland. Capsule globose, 

 oblong, or rarely elongate, with slender or prominent ribs. — Epiphytic 

 herbs. Stems short or somewhat elongate, leafy, not thickened into 

 pseudobulbs. Leaves distichous, spreading, coriaceous, fleshy, or rarely 

 slender, flat or rarely terete, articulated to a persistent sheath. 

 Peduncles lateral, simple or branched. Flowers small or medium - 

 sized, arranged in lax or dense racemes or panicles. Bracts small. — 

 Acampe, Lindl. Fol. Orch., Acampe, 1. 



A genus of over 60 species, widely diffused in India and Malaya, with a few Poly- 

 nesian representatives, one Australian, and a few in Tropical Africa and Madagascar. 

 The African species all belong to the section Acampe (formerly considered a distinct 

 genus), characterised by its very fleshy lip. 



Spur conical 1. S.pachyglossmn. 



Spur rounded 2. >S. momhasense. 



1. S. pachyglossum, Rolfe. Stem stout, with thick roots. 

 Leaves ligulate, unequally bilobed at the apex, 9 J in. long, 14 lin. 

 broad. Panicles unequal. Sepals and petals cuneate or oblong-ligulate, 

 subacute. Lip trilobed ; side lobes very dwarf, semioblong, angled in 

 front ; front lobe quadrate, asperulous, with a pair of keels on the disc, 

 and another dwarf one near the mouth of the spur ; spur conical, small. 

 — Acampe pachyglossa, Reichb. f. Otia Bot. Hamb. ii. 7G. 



Nile Iiand. British East Africa : Mombasa, midebrandt, 1991 ! 



2. S. mombasense, i?oZ/*e. Plant glabrous, stout. Leaves oblong- 

 ligulate, 8 in. long, IJ in. broad; apex obliquely emarginate. Spikes 

 shortly racemose or somewhat paniculate, o-4 in. long. Bracts short, 

 semiorbicular-ovate. Flowers thick, fleshy. Dorsal sepal spathulate- 

 ligulate, obtuse, 5 lin. long, 2J lin. broad ; lateral similar to the dorsal, 

 2 lin. broad, oblong-Ugulate. Petals much like the sepals but 

 more spathulate, 1 f lin. long. Lip 4^-5 hn. long, trilobed ; side lobes 

 short, rounded, pubescent above; front lobe thick, broadly 5-angled, 

 obtuse, 2 lin. long, very papillose on the margin and upper face ; disc 

 with a lamelliform keel between the side lobes, terminating in an obtuse 



