MACLOSKIE : PTERIDOPHYTA, FERNS AND FERNLIKE PLANTS. 1 29 



H. CAUDICULATUM (Mart.) var. CAUDATUM Bosch. 



Stipe to 15 cm., broad-winged above. Frond thrice-pinnatifid ; main 

 rachis with a crisp wing; var. also with the secondary rachis winged. 

 Sori apical on the segments. 



Chonos Archip. S. Patagonia, Otway. 



H. CRUENTUM Cav. 



10 cm. Frond simple, sinuate, glabrous. Sori at apex of the sinua- 

 tions. 



Fig. in Eng. & Pr. i. 4. p. 109. A. Patagonia, Otway. 



H. DICHOTOMUM Cav. 



To 20 cm. Frond and segments crisped, twice to thrice-pinnatifid. 

 Stipe and rachis winged. Ultimate segments broad-linear. "Sori in their 

 axils. Valves of indusium spinose. 



(Chili) ; W. Magellan. Otway. 



H. DICRANOTRICHUM (Presl.). (H. chiloense Hook.) 

 7 cm. Frond ciliated, hairy, twice-pinnatifid. Rachis zigzag, ciliated 



and winged. Stipe not winged. Sori singly at base of pinnae, only on 



the upper side. 



Chonos Archip. ; Chiloe ; Otway. 



H. DUSENII Christ. 



Mosslike, cespitose, 5 mm. high. Frond once-pinnate ; pinnae pecti- 

 nate ; their segments ligulate-linear; with rufous apex and dark single 

 nerve. Margin ciliate. Sori? 



W. Magellan ; S. Fuegia at 500 meters elevation. 



H. FALKLANDICUM Baker. 



4 cm. Stipe filiform. Frond not crisped, twice-pinnatifid. Rachis 

 flexuous, filiform ; ultimate lobes ligulate, ciliate-toothed. Sori solitary 

 at base of upper pinnae. 



Falklands. 



H. MAGELLANICUM (Desv. sub Didymoglossum] Hook. & Bak. 

 To 20 cm. Stipe and rachis winged throughout. Frond thrice-pinna- 

 tifid; its ultimate segments spinulose-toothed. Sori 6-10, terminal. 

 (Chili; Organ Mts.) ; Chiloe; W. Magellan, Churucca, on old trees. 



