170 118 
reduced, central ones about 10 cm long, 2'/2 cm broad, shortly acuminate, a 
distinct aérophore at the base beneath, incised to a wing 4--5 mm broad into 
close oblong segments, whiéh are as broad at the rounded apex as at the base. 
Veins 10—12, keel distinct. — Fertile lamina, much narrower, 20 cm long by 8 
cm broad; pinne distant, obtuse, 3—3'/» cm long, 1 cm broad, incised nearly to 
costa. Sori near costule, furnished with a persistent, long-ciliated indusium. 
D. valdepilosa is intermediate between JD. Leprieurii and D. insignis, abundantly 
different from both by its dimorphous fronds and woolly pubescence of stipe 
and rachis. 
187. Dryopteris insignis (Mett.) O. Ktze. Rev. 2: 813. 1891; C. Chr. Ind. 272. 
Syn. Aspidium insigne Mett. Ann. sc. nat. V. 2: 247. 1864. 
Nephrodium insigne Bak. Syn. 262. 1867. 
Type from Colombia, Triana (B, where only a pair of basal pinnz is to 
be found). 
A true Steiropteris, by HiEeRONYMUS unrightly identified with D. brachyodus 
(Hedwigia 46: 323). It differs from the other species of the subgenus by its entirely 
glabrous pinne, which are only incised !/»—?/s; keel very distinct; segments 7—8 
mm broad; veins 12—16-jugate, prominent, sori medial, small. Texture firm, mem- 
branous, colour grey. 
A hairy form of this species is no doubt Dryopteris lata Hieron. Hedwigia 
46: 327. 1907, from Ecuador, in valle Pastaza, SrÜBEL nr. 999 part (B!). It differs 
by its strigose coste and veins beneath and the caudate apex of the pinne. HrERO- 
NvMUS identified it with Lastrea lata J. Sm. a name attributed to Cumine pl. phi- 
lipp. nr. 266, which certainly came from the Philippine Islands. I have seen au- 
thentic specimens of Cumine nr. 266 in herb. PnEsr and they differ from D. lata 
Hieron. inter alia by the stalked pinnz. I agree with Baxker in considering L. lata 
J. Sm. a form of D. crassifolia (Bl.) O. Ktze. 
The following two species are as to several characters very different from the 
species of Steiropteris dealt with above, still I think their proper place must be in 
this subgenus, although it is not improbable that they belong to a proper subgenus. 
In general aspect they resemble much more species of Goniopteris f. inst. D. nicara- 
guensis and D. megalodus, and at first I referred them to that subgenus. They 
differ, however, from Goniopteris and agree with Steiropteris in the presence of 
distinct aérophores and in pubescence, stellate hairs being entirely wanting, rachis 
and coste beneath are very finely pubescent by minute, simple hairs, which do 
not differ from the short, unicellular hairs of most species of Steiropteris. Long 
pluricellular hairs of the common kind do not occur, but the cost: and costule 
beneath are more or less furnished with narrow, brown fibrils, which are scale- 
like hairs consisting of a single row of cells; such fibrils are often found in large 
