Ae 
Another andine representative of D. villosa, resembling D. andicola very much 
in size, colour, cutting and numerous castaneous scales of primary and secondary 
rachises; it differs chiefly by its underside being throughout densely and_ shortly 
downy and besides finely glandulose. Upperside rather densely pubescent with longer 
whitish hairs on the ribs and shorter adpressed ones on the leaf-tissue. The rather 
numerous, castaneous, lanceolate scales are entire at the lower part, minutely toothed 
‘towards the apex. In cutting the species agrees with D. villosa and the exindusiate 
species D. squamosissima and D. mollicoma, i.e. the larger tertiary pinnules are 
obtuse, crenate or lobed and dilated equally to both sides at base. In pubescence 
and glandular underside it is nearly exactly like D. adenopteris and D. crenulans 
var. glandulosa, though with longer hairs above, but it differs greatly from both by 
its scales and from the former by its dark-brown, large indusia. As a whole this 
species may be considered an intermediate form between the andine and the South- 
Brazilian species of the narrower group of D. villosa. 
. Besides the type-specimens I refer hereto with certainty a young plant from 
Polo-Polo, Northern Yungas, Bolivia, BUCHTIEN no. 3598 (R) although it has very few 
scales and the rachis long and _ softly hairy; more doubtful are other specimens 
from Yungas, Russy no. 425 (W), which are exindusiate and closely resemble 
D. mollicoma. 
348. Dryopteris crenulans (Fée) C. Chr. comb. nov. 
Syn. Aspidium crenulans Fée, Cr. vase. Brés. 1: 139 t. 47 f. 1. 1869. 
Aspidium (s. Nephrodium) villosum auctt. quoad pl. Brasil. 
Aspidium consobrinum Fée, |. c. 140 pt. (non 11. mém. 85). 
Type from Brazil, leg. Guaziou no. 1781 (cotype in H, RB). 
pinne seen 50 cm long. In cutting scarcely different from D. villosa, but pubescence 
very different. Scales of rachis and cost very few or absent, the basal ones fewer, 
thinner, brighter and flaccid, thosé of the costules ovate-acuminate with a bullate 
base. Midribs and veins above with comparatively few long sete, underside through- 
_ out very shortly and rather densely puberulous, long hairs being few or absent, 
and more or less glandulose. Indusium large, castaneous. 
To this species I refer a number of forms from South Brazil and the adjacent 
countries. 
1. f. typica Underside very slightly or not at all glandular; long hairs few or 
absent. Indusium large, castaneous. 
Rio Janeiro, Giaziou nr. 1781 (H, RB), 2351 (H, RB, Rg, W); Organ Mts., GARDNER nr. 189 (B, 
fragm.). 
