TO SOUTH-AFRICAN BOTANY. 175 
circ. 1500 metr, fl. Febr, P. MacOwan No. 1123; in summo 
monte et ad latera montis Bazije, Kaffraria, fl. Jan. R. Baur 
No. 592; in Republicâ * Orange Free State" dicta, 7. Cooper 
No. 1095; prope Lambonjwa flumen, ditione Klip River, Natal, 
fl. Jan, J. M. Wood No. 3421; in graminosis pr. Fort Mac- 
donald, Griqualand Orientalis, fl. Jan., alt. eire. 1530 metr., W. 
Tyson No. 1598. 
Disa PORRECTA, Sw. (§ Oregura.) There has long been a 
confusion between this species and D. ferruginea, S. Both were 
first published under those names in the ‘Kongl. Vetenskaps 
Academiens Nya Handlingar, vol. xxi. (1800), pp. 210-211, the 
last-named being based upon Satyrium ferrugineum, Thunb., and 
the first upon a plant collected by Sparrman. In Thunberg’s 
herbarium are two sheets of different species both marked D. 
Jerruginea. One of these, according to Mr. N. E. Brown, who 
examined them, agrees with the description of the plant well 
known under that name, and which grows commonly on Table 
Mountain close to Cape Town. It was figured by Ker in the 
‘Journal of Science and the Arts,’ vol. v. (London, 1818), t. 1. f. 1, 
under the name of D. porrecta, and by Harvey in Hooker’s 
* Icones Plantarum’ (1840), tab. 214, as “ D. ferruginea?, Thunb." 
Subsequently, in a paper in Hooker's * London Journal of Botany,' 
vol. i. 1842, p. 15, Harvey stated his belief that D. porrecta was 
a synonym for the same species. In 1838 Lindley, in * Genera 
and Species of Orchids,’ p. 352, described D. porrecta afresh, 
but quoted under that name Ker's figure above named, aud 
Burchell's specimens No. 8199, both of which are unmistakably 
D. ferruginea; while he enumerated D. ferruginea amongst the 
species unknown to him. 
The specimens on the other sheet marked D. ferruginea in 
Thunberg’s herbarium were identified by Mr. Brown as D. 
Zeyheri, Sond., in ‘Linnea,’ vol. xix. (1847), p. 95, a species 
founded on a plant of Ecklon and Zeyher’s from Eland's River 
Mountains, Uitenhage district. 
There were no sheets or specimens in Thunberg’s herb. marked 
D. porrecta. 
Prof. Reichenbach, who also examined the Orchids of Thun- 
berg’s herb. and published an account of them in ‘ Flora’ for 
1883, reported :—“ 14. Disa ferruginea, Thunb. z Zeyheri, Sond.” 
(p. 461). From this we may infer that Prof. Reichenbach saw 
