A FURTHER CONTRIBUTION TO OUR KNOW- 
LEDGE OF THE GENUS THOSMA, WILLD., 
CONTAINING DESCRIPTIONS OF 23 NEW 
SPECIES AND 3 NEW VARIETIES 
By R. A. DUMMER. 
My former paper on the genus Agathosma, which was based on all 
the relevant material in the Kew Herbarium, the South Kensington 
Museum, and the Linnean collections, appeared in Fedde’s Repertorium, xi, 
1912, pp. 321-337 and 401-423. At that time no opportunity was afforded 
me of examining the rich collections in the S.A. Herbaria, notably that of 
the Bolus Herbarium, and of the S.A. Museum Herbarium at Cape Town. 
The following descriptions of novelties are therefore the result of the examina- 
tion of these collections as well as those of the Albany Museum (Grahamstown), 
the University of Stellenbosch, and of Drs R. Marloth and W. Froembling, 
C. Town, and of Mr J. Lamb of the Observatory. 
Primarily it had been my intention to monograph this genus, but owing 
to lack of time, and my early departure to Uganda, and the difficulty of 
procuring the necessary types from Europe at the present time (about 40 
types not being represented in the local Herbaria) this project had reluctantly 
to he abandoned. Among the rarae aves which have recently come to light 
again are A. struthioloides , mihi, A. Dregeana, Sond., A. gonaquensis, E. and Z., 
A. nigromontana, E. and Z., A. filipetala, E. and Z., A. linifolia, Lichst., 
A. blaerioides, Cham., A. pubescens, Sond., A. Burcliellii, mihi, A. pilifera, 
Schlecht., A. craspedota, E. Mey., A. recurvifolia, Sond., A. punctata, Sond., 
A. mucronulata, Sond., A. martiana, Sond., A. propinqua, Sond., A. gibbosa, 
mihi, A. lancifolia, E. and Z., A. rubra, Willd., A. decumbens, E. and Z., 
A. asperifolia, E. and Z., which records serve to indicate, that although 
apparently extremely local in their distribution, these species happily have 
not suffered extinction. Six novelties have been described since the appearance 
of my first paper; these are A. Sladeniana, Glover, and A. Muirii, A. alta, 
A. Dummeri, A. rotundipetala, and A. giftbergensis of Phillips, all of which 
are apparently distinct with the exception of the latter, which I can only 
regard as a form of my A. microcalyx from the same locality. 
The genus as at present conceived, with the descriptions of the present 
novelties, therefore comprises about 170 species. 
In conclusion I have pleasure in expressing my thanks to the authorities 
