74 
The species differs from all allied species by 1) its scales of the costules 
beneath, which are few or rather many, fulvous or fuscous, broadly ovate, entire, 
2) in its pubescence: short hairs absent throughout, but rachis and specially coste, 
costule and midribs beneath with often many long, soft, articulated hairs, which 
when falling leave red, a little elevated spots on the rachises; coste and costule 
above antrorsely strigose, the margins ciliated, surfaces otherwise glabrous and 
eglandulose, 3) in its sori which are a little supramedial, at maturity covering the 
whole under surface with a dense mass of sporangia, without a true indusium, but 
at the centre with a tuft of long, articulated hairs from the receptacle. 
__ In general habit our species resembles closely D. subnicisa, in pubescence it comes 
nearer to the more glabrescent forms of D. Karsteniana, but its costulae scales and long 
hairy receptacles mark it clearly. Old leaves are often quite glabrous, the hairs being 
early falling, leaving red spots such as are also seen in some forms of D. Karsteniana. 
The typical form is apparently confined to the island of Masatierra, and the specics 
is, as far as known, endemic in the islands. 
Juan Fernandez: Masatierra, common, ScHEIp (R), SkOTTSBERG 1908 nr. 730, 731 bis (CC, U) 1916— 
1917: nr. 65, 168, 274, 274 b, 275, 339, 604, 1151, 1152 (Herb. SkoTTSBERG). 
In the island of Masafuera the species seems to be growing in a single locality 
only, and the specimens from that island are somewhat different in pubescence. 
This form may be named. 
var. glabrior C. Chr. et Skottsb. n. var. 
Large, dark-green, nearly quite glabrous, receptacles glabrous or sometimes 
with 1—2 shorter hairs. 
Juan Fernandez: Masafuera, in the inner of Quebrada de las Casas, SkoTTsSBERG 1908 nr. 731 (CC, U), 
1917 nr. 446. 
332. Dryopteris squamosissima (Sodiro) C. Chr. Ind. 294. 1905. — Fig. 16. 
Syn. Nephrodium squamosissimum Sodiro, Cr. vase. quit. 256. 1893. 
Type from Ecuador: Cerro El Altar, province of Chimborazo, leg. Sop1ro (not seen). 
Having seen no authentical specimen it is, of course, somewhat uncertain, 
whether the species here described under Sopirno’s name really is identical with 
his species, still the specimen here considered the type of my species, viz. 
SPRUCE no. 5252 (H), agree well with Soprro’s description, and it seems better to 
use his name for it than to create a new name that later on probably will be 
shown to be a synonym. I have seen some pinnz and parts of the rachis only. 
D. squamosissima is, as here understood, the most developed species of all that 
are allied to D. subincisa, and it is specially well marked by its densely scaly 
| primary and secondary rachises. Rachis about 1 cm. thick, densely coated with a 
double layer of scales and tomentum. Scales large 1'/2—2 cm long, 11/2—2 mm 
broad, lanceolate-acuminate, castaneous, glossy, very shortly toothed or subentire 
