DESCRIPTIONS OF THE SPECIES 
209 
Rhodesian specimens from Chirinda Mts, 4000 ft (Swyn. 800) 
and Victoria Falls (Carbutt). 
Allosoms hastatus, var. macrophylla. Pappe and Rawson, 30. 
Cheilanthes macrophylla. Kze, Linn. 23, 307. 
Pellaea hastata, var. ?nacrophylla. Hk. Sp. 2, 146; Sim, Ferns of 
S. Afr ., 1st ed., 102. 
Cheilanthes hastata, var. macrophylla. Kze, Linn. 10, 81. 
Var. GLAUCA Sim (Plate 97, nat. size). Fronds triangular, 
three to eight inches long, two to five inches broad, on a 
stipe one to four inches long ; two-pinnate, with the pinnules 
deeply lobed, or sometimes three-pinnatifid. Lower pinnae 
largest, equal-sided, ascending, erecto-patent, or with the 
pinnules on both sides of the rachis pointing upward so as 
nearly to meet. Frond glabrous on both surfaces, firmly 
herbaceous, glaucous, and with the brown or nearly black 
rachis and stipe almost destitute of scales, except at the base. 
It is not unlike P. hastata (Thbg) Prantl, and has been passed 
by high authorities from dried specimens as a variety of that 
fern ; but the stipe is not so black, nor the texture so coria- 
ceous, and as the fronds get old their connection with P. 
viridis becomes more apparent. 
There are two forms of it, often growing together, which 
in their extremes might well be set down as distinct species, 
but they run into one another, and the larger one approaches 
the ordinary P. viridis , though generally distinguishable. Its 
close connection with P. involuta has been noticed under that 
species. 
The smaller form is seldom more than four inches high, 
quite deltoid, and glaucous, and with the small pinnules 
meeting above the rachis, and cut into decurrent lobes. The 
larger form (Plate 98, Fig. 2) is generally over six inches 
and under twelve inches in height, not so glaucous, and with 
pinnules not so much lobed, but sometimes cut again into 
distinct oval segments. 
P. hastata Link., var . glauca. Sim, Kaff. Ferns', Sim, Ferns of S. Afr., 
1st ed., 102. 
P ter is adiantoides. Bory. 
This form grows on the top of nearly bare rock or among 
stones. 
S. F. S. A. 
14 
