130 PATAGONIAN EXPEDITIONS: BOTANY. 



H. NIGRICANS Colla. (H. tortuositm Hook., non Banks.) 



15 cm. Stipe wiry, it and rachis winged throughout. Frond crisped, 

 broad ovate-triangular, thrice-pinnatifid. Ultimate segments linear, 

 toothed. Sori 10-00, terminal on the pinnules. 



(Chili); Patagon., and adjacent Is., to Cape Horn. 



H. PECTINATUM Cav. 



To 1 8 cm. Stipes wiry. Fronds pinnate: rachis winged next apex. 

 Pinnae winged on lower, pectinate on upper side. Sori terminal on prox- 

 imal segments of upper side. Beautiful. 



Chonos Archip.; W. Magellan., "common on trunks of trees and rot- 

 ting wood." (Dusen.) Patagonia, Churucca. 



H. PELTATUM Poir. ("oldest name" W. J. Hook.). (H. tunbridgense 



Sm. var. ivilsoni Hook.) 



5 cm. Frond pinnate ; the pinnae distichous, and pinnatifid on their 

 upper side only. Margins spinulose-toothed. Rachis and upper part of 

 stipe winged. 



(Norway; British Isles; Australia; N. Zeal.; Chili); Chonos to Cape 

 Horn ; Falklands. 



H. RARUM Br. (H. darwinii Hook.) 



1 2 cm. Glabrous. Twice-pinnatifid ; with winged rachis. Sori large, 

 terminal on the broad segments. 



(S. Afr., Tasmania; N. Zeal.); Patag., Fuegia; Falklands; Staaten I. 



H. SECUNDUM Hook. & Grev. 



8 cm. Frond pinnate ; pinnae recurved, flabellate-pinnatifid. Ultimate 

 segments linear-spinulose-toothed, falcate, secund. Sori solitary at base 

 of pinnae on upper side. 



W. Magellan., on mossy soil in woods near Churucca. Fuegia to Cape 

 Horn ; Staaten I. 



H. SUBTILISSIMUM Kunze. 



20 cm. Stipe wiry, tomentose. Frond hairy, thrice-pinnatifid. Rachis 

 slightly winged above. Ultimate segments broad-linear, with copious 

 tawny stellate hairs. Sori terminal. 



(New Zealand ; Chili; Fernandez); Chiloe; Patagonia, Otway; Fuegia 

 to I. Hoste. 



