Sa 
broad, 2—3 cm long; lower side of basal pinnz considerably produced (see also 
D. pubescens var. muscosa). 354, D. chaerophylloides (Poir.) hr. 
Lamina broadly- lanceolate, large, bipinnate-tripinnatifid; lower basal pinnula 
of the basal pinnz shorter than the following. 357. D. Trianae (Mett.) O. Ktze. 
— Lamina deltoid, 3—5-pinnate (of D. denticulata *laeta tripinnatifid) ; lower basal 
pinnula of basal pinnz much the largest. 6. 
6. Basal scales castaneous, rather r 
7 
or 
. 
rigid. ; 
Basal scales reddish or yellowish, soft; teeth of ifdienis segments obtuse. 11. 
Large; lamina 40—70cm high or more, 3- pinnate—4-pinnatifid, rigidly coriace- 
ous; tertiary pinnules of middle pinnz decurrent, confluent with a wing to 
ta. 8 
the costa 4 
— Smaller; lamina 10—40cm each way; tertiary pinnule not decurrent. 9. 
8. Rachises without scales. 358. D. macrostegia (Hook.) O. Ktze. 
— Rachises with brown, toothed scales 359. D. amplissima (Pr.) C. Chr. 
9. Lamina rigidly coriaceous, 5- -pinnate:; ultimate segments not more than 1—1'/s 
mm broad. 10. 
— Lamina membranous to subcoriaceous, ultimate segments ovate-oblong, 2—4 mm 
broad; teeth aristate or sharply acute. 360. D. denticulata (Sw.) O. Ktze. 
10. Ultimate segments sharply acute, 361. D. rigidissima (Hook.) C. Chr. 
Ultimate segments obtuse or subacute. 359. D. denticulata var. dissecta (Fée). 
11. Small, andine species; lamina 10—15 cm long, 4-pinnatifid. 
362. D. leucostegioides C. Chr. 
— Larger lamina 30—40 cm long, 4-pinnate—5- pinnatifid. Cuba. 
363. D. ie (Fée) Maxon. 
353. Dryopteris pubescens (L.) O. Ktze. Rev. Gen. Pl. 2: 813. 1891. — Fig. 21. 
Syn. Polypodium pubescens L. Syst. ed. X. 2: 1327. 1759. 
Aspidium pubescens Sw. 1801; Mett. Aspid. 7( 
Nephrodium pubescens Desy. 1827; Hook. et Grey. Ic. Fil. tab. 162 (good!); 
Jenman, Bull. Dept. Jam. n. s. 3: 100. 1896. 
Type from Jamaica, leg. Parrick Browne (not seen). 
Under the name D. (resp. Aspidium or Nephrodium) pubescens most authors 
have united a series of West-Indian ferns, which, I think, can safely be referred 
to at least three distinct species. These having most characters in common I con- 
fine myself to describe in full the true D. pubescens and under the two following — 
species to mention only their differentiating marks. As the true D. pubescens I under- 
stand that Jamaican fern well figured by Hook. and Grev., and which is esi 3cgo 
by several specimens in W. 
Rhizome creeping, about 5 mm thick, furnished with some few brown, lan- 
—ceolate scales, the roots tomentose. Stipites rather close, fusco-stramineous, slender, 
15—20 cm long, towards the base slightly scaly and tomentose by woolly, pluri- 
cellular hairs, upwards with similar, but fewer, patent hairs, at least subglabrous. 
— 
. 
