DESCRIPTIONS OF THE SPECIES 
2; 
rachis which has numerous white scales when young, which 
become brown with age if persistent. Pinnae close, one-third 
inch wide, one to one and a half inches long, slightly crenate, 
rounded at the point, cordate at the base, auricled or lobed 
on the upper side at the base, the auricles overlapping on the 
under side of the rachis. Sori midway between the mid-rib 
and the edge. Said by Baker to differ from N. exaltata by 
its narrower frond, close blunt pinnae and sub-medial sori. 
N. cordifolia (L.). Pr. Tent. 79, 1836 ; Hk. and Bkr, Syn. Fit. 300 ; 
C. Chr. Index , 453. 
Polypodium cordifolium. Linn. Sp. 2, 1089. 1753 . 
Aspidium tuberosum. Bory. 
Tropics and subtropics, also common in cultivation where 
it is found to be very hardy against sunshine and drought. 
Its tubers render its escape from cultivation easy. A speci- 
men in the Transvaal Museum Herbarium (P. Oranjie, May 
1905; T. M., No. 858) from Barberton is regarded as probably 
from cultivation or escape, as no other Transvaal collector 
has found it, and it is not included in Burtt-Davy’s list, and 
especially as that Herbarium also contains a crested specimen 
(T. M., No. 396) from the same collector, locality and date, of 
N. acuminata (Houtt) Kuhn (= N. davallioides Kze), a Java 
species, common in cultivation. 
Rhodesia. — Umtali (J. F. Darling, 20); Victoria Falls (Richards, 
Holland, Engler, Miss Gibbs fide Baker) ; Matabeleland (Oates 
fide Baker) ; Chirinda Forest, 3700—4000 ft (Swynnerton, 856). 
The latter specimen is labelled by Gepp Var. undulata J. Sm., 
but does not differ from our illustration except in having pinnae 
rather fewer and not overlapping. 
Genus 15. Davallia Smith. 
Fronds firm, decompound, jointed to the long woody 
rhizome. Sorus marginal, almost cuplike, opening outward ; 
involucre coriaceous. 
This genus contains 65 species, mostly tropical, of which 
only one is South African. In our first edition other two 
ferns were included in Davallia which are now removed into 
Microlepia and Asplenium respectively, and my Davallia 
(. Loxoscaphe ) Hollandii is also moved into Asplenium. 
