VII. LASTREA. 123 
those ferns which have been separated from time to time from 
this variable species, to a satisfactory conclusion. I have there- 
fore not attempted it, but have placed as varieties the various 
forms proposed as species by otiier writers on the subject, adopt- 
ing for the most part, in substance at least, the definitions they 
have given, and leaving the whole subject open for further in- 
vestigation.] 
a : fronds lanceolate-ovate or subtriangular ovate, 
somewhat drooping, bi-tri-pinnate ; scales of the stipes 
dark-coloured and opaque in the centre, with pale trans- 
parent margins. 
LASTREA DILATATA, Presl : Bab. Man. 411. LASTREA MDLTI- 
FLORA, Newm. 216: Florigr. Brit, iv., 113 (incl. ft.) ASPIDIUM 
DILATATUM, Smith FL Brit. 1125: Swartz: Willdenow: Eng. Fl. 
iv. 280: Eng. Bot., 1461: Franc. 42. ASPIDIUM SPINULOSUM, 
Swartz: Willdenow: Hook, and Arn. Fl. 571 (in part). POLYFO- 
DIUM DILATATUM. Hoffmann. P. ARISTATUM, Villars. P. CRISTA- 
1UM, Hudson POLTSTICHUM MCLTIFLOBUM, Roth. LOPHODIUM 
MULTIFLORUM, Newm. App. jolii. 
ft. collina : fronds narrow ovate, elongate at the apex, 
bipinnate ; pinme distant ; pinnules oblong rounded at the 
end, lobed in the lower pinnae, the lobes serrated at their 
extremity, scales of the stipes few except at the base, 
broader upwards, with a darker central mark. 
LASTBF.A DILATATA ear. COLLINA, Moore, ed. 1, 59. LASTREA 
MULTIKLORA, uar. COLLINA, Newm , 222: Florigr. Brit. iv. 114. 
LASTREA COLLINA, Newm., 224. LOPHODIUM COLLINUM, Newm. 
App. xviii. 
7. Smithii : fronds narrowly subtriangular-elongate- 
ovate, bipinnate ; pinnte opposite horizontal distant ; pin- 
nules narrowly decurrent with the slender wing of rachis, 
oblong obtuse serrated, the serratures incurved ; scales of 
the stipes dark two-coloured, and except at the base small 
narrow and scattered. 
