DESCRIPTIONS OF THE SPECIES 
9 7 
The pinnae are less deeply cut upward, ending in a simply 
toothed blunt apex. Sori diverging obliquely from near the 
mid-rib into the teeth or lobes in the upper part of the pinnae, 
ultimately sub-confluent, parallel with the mid-rib. 
Ceropteris calomelanos (Linn.). Und. Bull. Torr. Cl. 29, 632, 1902; 
C. Chr. Ind. 169. 
Gyinnogramme tartarea Desv., var. /3 ochracea. Hk. and Bkr, Syn. 
Fil. 384. 
G. ochracea (Presl). Sim, Ferns of S. Apr., 1st ed., 214. 
Acrostichum calomelanos. Linn. Sp. 2, 1072. 1753. 
A tropical American species included as African by Kuhn 
from Fernando Po and by Christensen on Gerrard’s specimen 
concerning which Baker in Syn. Fil., under Gym. tartarea 
Desv., var. {3 ochracea says: “We cannot distinguish from 
G. ochracea a plant gathered by Gerrard in Natal.” I have 
doubts if this plant is really South African. 
Natal. — (Gerrard, fide Hk. and Bkr, Syn. Fil.). Railway cutting 
between Seaview and South Coast Junction, abundant, on Sand- 
stone rock (T. R. Sim, July, 1914) 1 . 
Transvaal. — (Herb. Bolus). 
B. Cheilanthinae. 
Genus 26. Pellaea Link. 
Small ferns of rigid habit, having divided fronds, often 
coriaceous, lanceolate or triangular, and generally with free 
veins. Sori marginal, with a rather wide continuous or inter- 
rupted indusium, under which the sori are at first separate 
and terminal on the veins, produced upon the lamina, but 
afterwards more or less continuous. From Cheilanthes this 
is distinguished by the continuous indusiurtf, though some- 
times it is so much interrupted as to make the limit between 
the two genera rather indefinite. From Pteris it is distin- 
guished by the sori being at first confined to the ends of the 
veins, upon the lamina instead of in a continuous line in 
the axil of the indusium, but as the capsules mature this 
character becomes lost, and these two genera then appear 
almost too closely connected. 
The Pellaeas are widely distributed, but most numerous 
in Western North America and in South Africa. 
1 See p. 48. 
