180 cxxxiii. ORCHiDE^ (rolfe). [Coovjmbis. 



A genus of about 15 species, widely dispersed through the tropics. 



Western species 1. C. Welwifschii. 



Eastern species 2. C. corymhosa. 



1. C. Welwitschii, Reichh.f. in Flora, 1865, 183. Stems 3-G ft. 

 higli. Leaves elliptic-lanceolate or broadly elliptical, acuminate, 

 7-12 in. long, li-S^ in. broad. Panicles axillary and terminal, shortly 

 pedunculate. Bracts ov^e-lanceolate, acuminate, 5-0 lin. long. 

 Flowers gi-eenish -white. Sepals and petals narrowly elongate-linear, 

 narrowly lanceolate near the apex, 2| in. long. Lip similar to the 

 sepals, but the apical part of the limb is ovate and about four times as 

 broad. Column If in. long. Capsule linear-oblong, 1 in. long. — Rolfe 

 in Bolet. Soc. Brot. ix. 141 ; Durand k Schinz, Conspect. Fl. Afr. v. 50. 

 Ccn^ymhis disticha, Lindl. Fol. Orch. Corymbis, 1, in part; Journ. Linn.' 

 Soc. vi. 138, in part. Corymbis corymhosa, Durand k Schinz, I.e. 56, 

 in part. Corymborchis Welwitschii, Kuntze, Rev. Gen. PL 058. 



Upper Guinea. Sierra Leone, cultivated specimen, Goiver ! Fernando Po, 

 Barter, 1478 ! Mann, 430 ! 



Xiower Guinea. St. Thomas : 1000 ft., Quintas, 27 1 Bon. Angola : Golungo 

 Alto ; Cungulungula, in dense shade, Welwitsch, 667 ! Cazengo ; Mt. Muxaula, WeU 

 witsch, 668 ! 



This species was confused by Liiidley with others from India, Malaya, Polynesia, 

 and Madagascar. 



2. C. corymbosa. Thou. Orch. lies Afr. tt. 37-38. Stem 2-3 ft. 

 high. Leaves elliptic-lanceolate, acuminate, 7-9 in. long, 1J-2J 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; Kranzl. in Engl. Pfl. Ost.-Afr. C. 154. Cwymbis disticha, 

 Lindl. Fol. Orch. Corymbis, 1, in part. Corymbis Thouarsii, Reichb. 

 f. in Bot. Zeit. 1849, 808. Cm^ymborchis Thouarsii, Blume, Coll. Orch. 

 Archip. Ind. 120, t. 44, fig. 1. 



IVEozamb. ]>lst> German East Africa : Usagara ; Kisara, in forests. Hoist, 

 2346! 



Also found in Madagascar, if tlie African plant is identical, as determined by 

 Kranzlin. The Kew specimen is without flowers. 



22. ZEUXINE, Lindl. ; Benth. et Hook. f. Gen. PI. 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 



