198 
THE FERNS OF SOUTH AFRICA 
Synopsis of the species : 
97. P. dura. Veins anastomosing (the only species in which they 
do so). Frond pinnate or two-pinnate. 
98. P. auriculata. Frond lanceolate, simply pinnate or nearly so, 
herbaceous ; pinnae ovate ; indusium very broad, crenate. 
99. P. Goudotii. Frond lanceolate, pinnate, rigid, coriaceous, more 
or less clothed with adpressed woolly scales, pinnules linear. 
100. P. lancifolia. Frond lanceolate, glabrous, two-pinnate; pin- 
nules ovate or deltoid, with a narrow base ; indusium very broad. 
Texture herbaceous. 
101. P. quadripinnata. Frond three to four-pinnate, deltoid, about 
as long as broad, more than four inches each way. Stipe and 
rachis brown. 
102. P. Boivini 
103. P. namaquensis 
104. P. involuta 
105. P. viridis 
106. P. leucomelas 
Frond twice as long as broad, three-pinnate 
or two-pinnate, stem and rachis brown, except 
in P. leucomelas. A very closely connected 
group, having no arbitrary characters distin- 
guishing them. 
107. P. Doniana. Frond simply pinnate, glabrous; rachis pubescent. 
108. P. hastata. Frond two to three-pinnate, deltoid; stipe, rachis, 
and petioles, black and shining; pinnules stalked, cordate, or 
deltoid, glabrous. 
109. P. Swynnertoniana. Similar to P. hastata , but pinnules very 
large, ivy-leaved. 
no. P. pteroides. Frond deltoid, three-pinnate, glabrous, pinnules 
stalked, half inch long, oval, entire ; involucres one to each veinlet. 
97. Pellaea DURA (Willd.) Baker. 
Plate 90. Fig. 1. Nat. size. 
Crown tufted ; fronds three to nine inches long, two to 
four inches broad, deltoid, pinnate or two-pinnate, coriaceous, 
glabrous. Upper pinnae linear-lanceolate from a cordate base, 
rounded at the point, one to one and a half inches long, one 
and a half to three lines broad ; lower pinnae similar, or with 
a similar terminal pinnule and one to four pairs of smaller 
side pinnules. Veins anastomosing freely, but rather obscure, 
except the central one which is like the rachis and stipe, black, 
shining, and naked. Involucre rather narrow, intramarginal. 
When barren the pinnules are rather wider than when fertile. 
