180 CXXXIII. ORCHIDEE (ROLFE). | Corymbis. 
A genus of about 15 species, widely dispersed through the tropics. 
Western species : ; : A í : . 1. C. Welwitschii. 
Eastern species - ; : : . 2. C. corymbosa. 
1. C. Welwitschii, Reichb. f. in Flora, 1865, 183. Stems 3—6 ft. 
high. Leaves elliptic-lanceolate or broadly elliptical, . acuminate, 
7-12 in. long, 14-3} in. broad. Panicles axillary and terminal, shortly 
pedunculate. Bracts ovate-lanceolate, acuminate, 5-9 lin. long. 
Flowers greenish-white. Sepals and petals narrowly elongate-linear, 
narrowly lanceolate near the apex, 24 in. long. Lip similar to the 
sepals, but the apical part of the limb is ovate and about four times as 
broad. Column 13 in. long. Capsule linear-oblong, 1 in. long.—Rolfe 
in Bolet. Soc. Brot. ix. 141; Durand & Schinz, Conspect. Fl. Afr. v. 56. 
Corymbis disticha, Lindl. Fol. Orch. Corymbis, 1, in part; Journ. Linn. 
Soc. vi. 138, in part. Corymbis corymbosa, Durand & Schinz, l.c. 56, 
in part. Corymborchis Welwitschii, Kuntze, Rev. Gen. Pl. 658. 
Upper Guinea. Sierra Leone, cultivated specimen, Gower! Fernando Po, 
Barter, 1478! Mann, 430! 
Lower Guinea. St. Thomas: 1000 ft., Quintas, 27! Don. Angola: Golungo 
Alto A EE in dense shade, Welwitsch, 667! Cazengo; Mt. Muxaula, Wel- 
witsch, ! 
This species was confused by Lindley with others from India, Malaya, Polynesia, 
and Madagascar. 
2, C. corymbosa, Thou. Orch. Iles Afr. tt. 37-38. Stem 2-3 ft. 
high. Leaves elliptic-lanceolate, acuminate, 7-9 in. long, 14—24 in. 
broad. Cymes or panicles axillary, shortly pedunculate. Bracts ovate- 
lanceolate, acuminate, 3-5 lin. long. Flowers large, white. Capsule 
linear-oblong, 9-10 lin. long; column persistent, 2 in. long.—Ridl. in 
Journ, Linn. Soc. xxi. 498; Durand & Schinz, Conspect. Fl. Afr. v. 55, 
in part; Krinzl. in Engl. Pf. Ost.-Afr. ©. 154. Corymbis disticha, 
Lindl. Fol. Orch. Corymbis, 1, in part. Corymbis Thouarsii, Reichb. 
f. in Bot. Zeit. 1849, 868. Corymborchis Thouarsii, Blume, Coll. Orch. 
Archip. Ind, 126, t. 44, fig. 1. 
aaron Dist. German East Africa: Usagara; Kisara, in forests, Holst, 
Also found in Madagascar, if the African plant is identical, as determined by 
Krinzlin, The Kew specimen is without flowers. 
22. ZEUXINE, Lindl.; Benth. et Hook. f. Gen. Pl. iii. 599. 
Sepals subequal; dorsal erect, concave; lateral spreading, free. 
Petals narrow, often cohering with the dorsal sepal into a galea. Lip 
very shortly adnate to the base of the column, erect, concave or sub- 
saccate at the base, but not protruded beyond the lateral sepals; with 
or without a pair of calli inside, more or less contracted in the middle, 
dilated at the apex into a small entire, or larger bilobed, spreading 
limb. Column very short; clinandrium short, continuous with the 
margin of the rostellum. Anther erect or inclined in front, oblong, 
shortly apiculate ` cells contiguous with the outer valves, broad ; pollinia 
