4G cxxxni. ORCHiDE^ (rolfe). [Calanthe. 



1. C. corymbosa, Lindl.in Journ. Linn. Soc. vi. 129. Khizome 

 stout. Leaves oblong- to elliptical-lanceolate, acute or acuminate; 

 blade 6-12 in. long, l|-4 in. broad; petioles 4-6 in. long, dilated at 

 the base. Scape li-2J in. long ; raceme subcorymbose or ultimately 

 elongate ; rhachis pubescent. Bracts lanceolate, acute, 7-9 lin. long. 

 Pedicels 1-1 J in. long. Flowers mauve, white and purple, or violet. 

 Sepals lanceolate-oblong, acute or acuminate, 6-8 lin. long. Petals very 

 similar to the sepals. Lip adnate to the short column, 5-6 lin. long, 

 with a pair of short, rounded, auriculate side lobes at the base; 

 front lobe obcordate, narrowed at the base, truncate ; disc with a 

 triangular warty crest at the base ; spur slender, somewhat curved, 

 6-9 lin. long. Capsule clavate-oblong, 1 in. long. — Rolfe in Bolet, Soc. 

 Brot. ix. 139. 



Upper Guinea. Cameroons, 5000 ft., in forest, Johnston, 107 ! Fernando Po, 

 5000 ft., Mann, 392 ! 



Ziower Guinea. Island of St. Thomas, 3600 ft., Quintas, 1 ! 



The specimen from St. Thomas is in fruit only, but apparently belongs to the same 

 species. 



2. C. delphinioidesy Krdnzl. in Engl. Jahrh. xvii. 55. Rhizome 

 «tout. Leaves elliptical-oblong, acute, 6-9 in. long, 3-4 in. broad ; 

 petioles 4-6 in. long. Scape Ij ft. long; raceme 3 in. long, about 

 10-12-flowered; rhachis pubescent. Bracts oblong-lanceolate, acute, 

 4-6 in. long. Pedicels 1 in. long. Sepals and petals elliptical-oblong, 

 acute or apiculate, membranous, 6 lin. long. Lip adnate to the short 

 column, 5-6 lin. long, with a pair of small, roundish, oblong, auriculate 

 side lobes at the base; front lobe bilobed, very narrow at the base, 

 nearly truncate ; disc with a linear-oblong, wart-like crest at the base ; 

 spur slender, slightly curved, 5-6 lin. long. 



Upper Guinea. Cameroons : near Mimbia, 3600 ft., Preuss, 1061 ! 

 Very closely allied to the preceding. 



3. C. Volkensii, Rolfe. Rhizome stout. Leaves elliptical- to 

 oblong-lanceolate, acute, 12-14 in. long, 4-4J in. broad ; petioles 5-7 in. 

 long. Scape 1 ft. high: raceme short, about 12-flowered; rhachis 

 pubescent. Bracts lanceolate to ovate-lanceolate, subacute, pubescent, 

 4-7 in. long. Pedicels 1-1 J in. long. Sepals lanceolate-oblong, acute 

 or apiculate, 7-8 lin. long; margins undulate. Petals oblong, subacute 

 or apiculate, a little smaller than the sepals. Lip adnate to the short 

 column ; side lobes oblong, obtuse, 2 lin. long ; front lobe, obcordate- 

 bilobed ; lobes truncate ; disc with three verrucose lines at the base ; spur 

 slender, 14-16 lin. long. — C. sijlvatica var. natalensis, Kranzl. in Engl.* 

 Pfl. Ost-Afr. C. 156 (not of Reichb. f.). 



Mozamb. Sist. German East Africa : Kilimanjaro ; Marangu, 6500 ft., 

 rolkens, 2263! 



Distinguished from the South African C. natalensis, Reichb. f,, amongst other 

 characters, by its longer, more slender spur. 



