193 245 
way down into entire, acute or subobtuse segments; upper basal segment of lower 
pinne generally a little prolonged and close to the rachis, the lower basal one 
shorter and remote from rachis. 
Veins simple, 14—16-jugate, of- 
ten prominent on the upper 
side, the basal pair connivent 
to sinus. Sori medial; indusium 
small, deciduous, setose. Spo- 
rangia glabrous. 
i 
-—) 
SSS 
=e 



Fig. 38. D. lugubris (Kze.) C. Chr, leg. Pour. Pinna *« 'l; 
and segments seen from both surfaces, » 1!|». 

NESVE 
yy 

=a 
The typical 
form of D. lugu- 
bris here described 
is rather common 
in Southern Bra- 
zil. It was refer- 
red to Nephr. te- 
tragonum by Ba- 
KER in Flor. bras. 
which also inclu- 
des our D. scabra, 
from which spe- 
cies it differs in pubescence and size. I have seen the following specimens: 
x 
= S 
Fig. 39. D. lugubris var. devolvens (Bak.) Basal pinnz ^X *|; and segments 
seen from both surfaces, >< 1'|» (Graziou 15766). 
Minas Geraes: Caldas, MosÉw nr. 2157, 2159 (Rg), 2160 (H, Rg); G. A. LiNpnBEnG nr. 558 (B); REGNELL 
nr. III 1450 c (Rg) — Lagoa Santa, WanuiNG (H). — Sao Paulo: Serra de Caracal, MosÉN 
nr, 2158 (Rg, S) — Matto Virgem, Rio Claro, LórGREN nr. 652 (H). 
In some of these typical specimens the hairs of the surfaces sometimes are 
stellate; therefore I refer the following form as a variety to D. lugubris. 
var. quadrangularis (Fée). 
Syn. Aspidium quadrangulare Fée, Cr. vasc. Brés. 1: 145 tab. 50 fig. 2. 1869. 
Rio, Grazrou nr. 962 (Herb. Cosson, Paris, H). 
Underside of lamina throughout like rachis and coste above densely greyish 
puberulous by stellate hairs. The lower 3—4 veins run to sinus. Scales fewer. 
Otherwise typical. 
D, K. D. Vidensk. Selsk. Skr., 7. Reekke, naturvidensk. og mathem, Afd. X. 2. 32 
