203 255 
always spring out from the costule 1 mm above the costa (fig. 43c), occasionally meni- 
scioid. Sori about medial, the lowermost ones still often near the point, where the 
basal veins meet and generally 2—3 mm remote from the costa, thus leaving a disc 
along the middle of the pinna free of sori. Indusium not seen; sporangia glabrous. 
D.vivipara varies mainly in texture and shape of pinnz. Some forms are thinly 
membranaceous, others coriaceous. From the type I cannot distinguish certainly 
Aspidium macropus Mett. Fil. Lechl. 2: 20. 1859, based on CraussEN nr. 112 (B). 
METTENIUS found it different from D. vivipara by its having a small indusium, which 
I have not found. It is a large form with pinnz up to 15cm long; the rhizome 
seems to be erect and is densely clothed with red-brown scales. To me it is only 
a large form of typical D.vivipara. A more distinct variety is 
var. platypes (Fée). 
Syn. Goniopteris platypes Fée, Cr. vasc. Br. 1: 106 tab. 33 “fig. 3", left-hand 
figure. 1869. 
Differs from the type by its glossy, dark-green papyraceous leaf and large size. 
Pinnz up to 20 cm long, 3—3'/» cm broad, cuneate at base, margins serrulate. 
Veins about 6, much upcurved, the anterior basal one often springing out from 
the costa. — The type specimen of this variety (Grazriou nr. 2402), which BAKER 
most remarkably referred to D. tetragona looks a distinct species, but it is connected 
with the type by numerous intermediate forms. 
D. vivipara is a common species in Southern Brazil and it is one of the very 
few species, which occur in almost identical forms in the Andes. I name some 
collector-numbers: 
Brazil: Rio, Graziou nr. 409 (H), 7321 (B); SELLow nr. 198 (B); BuncHELL nr. 936, 968 (B); CLAUSSEN 
nr. 2112 (B); MosÉN nr. 85 pt. (B, H, Rg), 2682 (Rg); REGNELL nr. 260 (Rg) Sta. Catha- 
rina, Blumenau, H. ScHuENK nr. 171 (C) — Paraná, Villa Nova, ANNIES, Rosenst. Fil. Austr. 
Bras. nr. 104 (Rg, W). 
Columbia: Cundinamarca, WEnckLÉ 1906 (C); KansrEN nr. 60 (B); LiNpiG nr. 193 (B). 
Costa Rica: Rio Surubres, 400 m., A. et C. Bnapk nr. 420 (R). 
var. platypes (Fée). 
Brazil: Rio, Grazrou nr. 2402 (Herb. Cosson, Paris, H); MosÉw nr. 85 part. (H) — JELINEK nr. 140 part. (B). 
256. Dryopteris straminea (Bak.) C. Chr. Index 294. 1905. — Fig. 43 b. 
Syn. Polypodium salicifolium Hook. sp. 4: 242. 1862. 
Polypodium stramineum Bak. Syn. 316. 1867. 
Type from Venezuela: Tovar, leg. FENDLER nr. 474 (Kew!). 
Nearly exactly D. vivipara in size, texture, entirely glabrous frond, the carti- 
laginous margins and gemmiferous rachis, but veins all free, about 4 to a side, the 
two basal ones terminating in the leaf-tissue and the posterior one springing out 
from the costa. Pinnz crenate or slightly lobed. It is not unlikely a variety of 
D. vivipara. 
33* 
