46 CXXXIII. ORCHIDEÆ (ROLFE). [Calanthe. 
1. C. corymbosa, Lindl. in Journ. Linn. Soc. vi. 129. Rhizome 
stout. Leaves oblong- to elliptical-lanceolate, acute or acuminate ; 
blade 6-12 in. long, 13-4 in. broad ; petioles 4-6 in. long, dilated at 
the base. Scape 14-2} in. long; raceme subcorymbose or ultimately 
elongate ; rhachis pakeca Bracts lanceolate, acute, 7—9 lin. long. 
Pedicels 1-1} 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! 
Lower Guinea. Island of St. Thomas, 3600 ft., Quintas, 1! 
The specimen from St. Thomas isin fruit only, but apparently belongs to the same 
species. 
2. C. delphinioides, Kränzl. in Engl. Jahrb. xvii. 55. Rhizome 
stout. Leaves elliptical-oblong, acute, 6-9 in. long, 3-4 in. broad; 
petioles 4-6 in. long. Scape 1} ft. long; raceme "8 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. 
C. Volkensii, Rolfe. Rhizome stout. Leaves elliptical- to 
EL secon acute, 12-14 in. long, 4-4} 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} 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. sylvatica var. natalensis, Kranz]. in Engl. 
Pfi. Ost-Afr. C. 156 (not of Reichb. f.). 
Mozamb. Dist. German East Africa: Kilimanjaro ; Marangu, 6500 ft., 
Volkens, 2263 ! 
Distinguished from the South African C. natalensis, Reichb. f., amongst other 
«haracters, by its longer, more slender spur. 
