ins, Hie 
entire. Midribs of pinnz and pinnules above rusty-pilose by Cienitis-hairs, together 
with the veins beneath softly pubescent by longer, flaccid and paler articulated 
hairs; margins ciliated by similar hairs, under surface minutely glandulose; midribs 
of pinnz and larger pinnulze beneath rather sparsely furnished with small brown, 
lanceolate or ovate-lanceolate, not bullate scales. Veins pinnate in ultimate lobes, 
not quite reaching the margin; midvein of the posterior basal segment springs out 
from the midrib of the pinnula above its base. Sori small, about medial on the 
ultimate veins; indusia very fugacious, ciliate. 
By its dark-coloured scales this new species agrees with D. hirta and related | 
species, most resembling D. oophylla in size and general habit; it differs from all 
near relatives of D. hirta by the lack of bullate scales and especially by the pre- 
sence of articulated, soft hairs on margins and midribs beneath. From small forms 
of D. ampla it may be distinguished at once by its dark-coloured retrorse scales of 
the stipes, from D. Hemsleyana by pubescence and less developed basal pinne. 
Panama: Humid forests along the upper Caldera River, above El Boquete, Chiriqui, 1450—1650 meters, 
Maxon nr. 5729 (W, CC); and southern slope of Cerro de la Horqueta, Chiriqui, about 1700 
meters, MAxon nr. 5437 (W). 
Costa Rica: Vicinity of Coliblanco, 1950 m, Maxon nr. 317 a(W); Sumbres, ‘. Biottey fil. nr. 14395 
(W); Rio Torres, ALFARO nr. 22 (W); Aserri pr. San José, LEHMANN nr. 27 ( 
forma major. Much larger than the accepted type; lamina ovate, 50 cm long 
by 20 cm broad or more, still larger than D. nemorosa; in minute characters it 
agrees perfectly with D. chiriquiana, and it is widely different from the larger species 
of this group by its soft, articulated hairs on the coste and costules beneath, lack 
of bullate scales, and its small, exindusiate sori. : 
Costa Rica: Tablazo, C. Brape nr. 27 (RB); WEeRCKLE (W). 
305. Dryopteris hirta (Sw.) O. Ktze. Rev. Gen. Pl. 2: 813. 1891; C. Chr. Ind. 270. 
Syn. Polypodium hirtum Sw. Prodr. Fl. Ind. oce. 133. 1788, Fl. Ind. oce. 3: 1686. 
Aspidium hirtum Sw. 1801; Mett. Aspid. nr. 271 (excl. var.); Schkuhr, Kr. 
Gen. t. 46 b. Lowe, Ferns 7 t. 11. 
Cystopteris hirta Kl. Linnaea 20: 361. 1847! ; 
Polypodium barbatum Kze.; Spr. Syst. 4: 57. 1827; Kze. Linnaea 9: 52. 1834! 
Cystopteris rufescens Fée, oak 300. 1850—52; 6. mém. 22 tab. 6 i 2, 
Type from Jamaica, leg. Swartz (S! H, B). 
Hooker (sp. 4: 128) and Baker (Syn. 278) united under Nephrodium hirtum 
a series of forms, which naturally must be referred to four species, viz. D. hirta, 
D. oophylla, D. crystallina and D. nemorosa. The genuine D. hirta, the form collected 
and described by Swartz shows the following characters: 
Lamina distinctly deltoid in outline, seldom more than 10 cm long and wide, 
often smaller, on a stalk of equal length, thinly herbaceous flaccid, _tripinnatifid, 
tripinnate below. Pinnz at distances of 2—3 cm, the basal ones the largest, unequally 
