COXTRIBUTIONS TO SOUTII-AFUTCAN UOTA^T. 65 



Contributions to Soyth-African Botany. — Orchidk^.. Part II. 

 By Harby Bo^us, F.L.S. With Additional JS'otesby N. E. 

 Bkown, A.L.S. 



[Read IVoveinber 19, 1885.] 



(Plate I.) 



Cala5The :p^atalt:nsis, HeicJib. f. {lionpJandia, 185G, p. 322). 

 Folia 5-6, oblongo-lanceolata, nervoso-plicata, basi angustata, 

 glabra vel minute pubcscontia, 25-35 cm. longa, 6-8 cm. lata; 

 seapus strictusj teres, pubescens, yaginis 2-3 distantibus praeditus, 

 35-45 cm. longus ; spica laxe 15-l8-flora, bracteis ovario parum 

 brevioribus per&istentibus ; flores expansi 3 cm. lati; sepala lau- 

 ceolata acuta, 1'5 cm. longa, extus pubescentia; petala lateralia 

 oblanceoluta, sequilonga, glabra ; labellum trilobatnm, porrectum, 

 subsequilongum, lobo medio anticc subtruncato, emarginato, sub 

 apice mucronato, lobis lateralibus cuncatis multo brevioribus :<ub- 

 obtusis, disco seriebus tribus callorum instructo, basi in calcar 

 filiforme arcuatum plerumque ovario longius productum ; ovarium 

 gracile, arcuatuiu, pubescens, 2*5 cm. longum. — Bot. Mag\ t. 6844. 



C. sylvatica, var. natalensis, Heiclth, f. in Linnceay xix. p. 374. 

 (Ex exempli, viv. duobus cultis sub num. 6101 exsiccatis.) 



Jlab, In sylvis prima?vis Perie Bush dictis, dilione King 

 A\'illiam's Town, Kaffrarise Britannicse, flor. Dec-Jan., legit J. 

 TVahJi ; turn in hortis botanicis Port Elizabeth et Cape Town 

 culta. — Bolus 6101, " Thickest and rockiest part of Perie Bush,'' 

 JD' Urban No. 108. " Kirkman's cutting, Maritzburg Eoad, 

 1500-2000 ft.," Xatal, Sanderson 1047; '^ Bush Swamp, The 

 Bluff, head of Natal Bay," Sanderson 1003; Natal, _Bwc7^a«a/?, 

 In herb. Kewensi, &c. 



The flowers are lilac, the labellum showing a tendency towards 

 a salmon-colour as they advance in age. The species is nearly 

 allied to C, Masuca^ Liudl., Bot. Mag. t. 4541. The habitat is 

 interesting as being the first time that any species of this genus 

 has been recorded from the Cape Colony proper. 



[The labellum of this species appears to vary considerably in 

 the size of the lateral lubes ; in ihe typical form as described by 

 Ueichenbach, they are very small, and the middle part of the 

 labellum between them and the front lobe narrow ; in Mr. Buluw*s 

 plant they are much larger and about equal the front lobe in 



LI>y. JOURX. — BOTANY, VOL. XXFI. F 



