70 IG. HYMEXOPHYLLUSr. 



dentate entire or forked linear segin.; sori few in numbei-, not more than 4 to a 

 pinna, and usually confined to the segments of the upper side, sessile or slightly 

 stalked, a line each way ; valves divided more than two-thirds of the way down, 

 roundish or oblong, spinuloso-dentate or entire. — H^, Sp. 1. p. 100. Ic. Fil, 

 t. 963. H. spinulosum, H. B. K. Hk. Sp. 1. p. 100. H. pedicellatum, Kunze. 

 II. blepharodes, Pr. H. cristatum, Hk. & Gr. Ic. Fil. 148. H. Peruvianum, 

 Hk. c^' Gr. t. 208. 



Hab. Common in Tropical America, from Cuba and Mexico southward to Brazil, 

 ascending in the Andes to 9,000 ft. — The six plants quoted as synonyms are considered 

 as distinct by Van den Bosch. H. torquescens and aculeatum, V. D. B., must probably 

 be placed here also ; but I have not seen specimens. 



65. H. inagellanicum, Willd. ; st. erect, wiry, rigid, 2-4 in. 1., naked or margined 

 with an undulato-crispate wing on each side ;/r. oblong-triangular, 3-6 in. 1., 2-3 

 in. br., tripinnatifid ; rackis winged throughout ; lower pinnae broadly triangular, 

 with pinnatifid pinnl., furnished with several linear spinuloso-dentate segin. on 

 each side ; sori 6 to 10, small, terminal on the segments of the upper pinnae ; 

 invol. oblong, with 2 short toothed valves. — H. attenuatum, Hk. Sp. 1. p. 99. 

 t. 36. B. L. magellanicum, V. D. B. H. Bibraianum, Sturm, in Flora 1853, 

 p. 861 . 



Hab. Chili, Chiloe, and Organ Mountains. — Rachis and stipe with an undulato-crispate 

 wing, but the frond plane, 



66. H. Bridgesii, Hk. ; st. 2-6 in. 1., wiry, naked or tomentose ; fr. broadly 

 ovate-triangular, tripinnate, 4-6 in. 1., 2-3 in. br. below ; main rachis only very 

 slightly winged near the apex ; pinnoe oblong-triangular, with the pinnl, of the 

 lower ones pinnate quite to the rachis ; ult. segm. very narrowly linear, rigid, 1-2 

 lin. 1., erecto-patent ; sori minute, often 6 to 8 to a pinna, placed 1 or 2 at the 

 base of the pinnules ; invol. divided about two-thirds of the way down, oblong, 

 entire or very slightly toothed.— i?^-. Sp. Fil. 1. p. 97. t. 35. C. 



Hab. Chili and Chiloe. — The only species of this section that is fully tripinnate. 

 ** Frond crisped. Sp. 67-71. 



67. H, tortuoswn^ Hk. & Gi\ ; st. 2-3 in. 1., erect, wiry, furnished with a narrow 

 crisped sinuated wing on both sides ; fr. broadly ovate-triangular, tripinnatifid, 

 8-6 in. 1., 2-3 in. br. below ; main rachis winged throughout ; lowest pinnai broadly 

 rhoniboidal-triangular ; the segm. more or less crisped ; the tilt, divisions 2-3 lin. 1., 

 linear, irregularly toothed and undulated at the margin ; so^'i sometimes 10 to 2C 

 to a pinna, terminal on the ultimate segments, sessile ; invol. broadly ovate, 

 divided about halfway down ; valves spinulose on the outer edge. — Hk. Sp, 1. 

 p. 99. Hk. £• Gr. Ic. Fil. t. 120. 



Hab. Chili, Patagonia, and neighbouring islands. — L. seselifoUum and L. dentatiim, 

 placed by Van den Bosch near H. tortuosum, I have not seen. 



68. H. dirhotomum, Cav. ; st. 2-3 in. 1., naked or slightly margined with an 

 undulato-crispate wing on both sides ; fr. ovate-triangular, bi- or tripinnatifid, 

 4-6 in. 1., 2-3 in. br. ; main rachis winged like the stipe throughout ; lower pinnoe 

 three times as long as broad ; the segm. crisped, broadly linear, undulato-dentate 

 at the margin ; sori numerous, placed in the axils of the segments ; invol. small, 

 ovate ; valves spinose on the back, divided about halfway down, nearly entire at 

 the apex.— i/>t. Sp. Fil. \.p. 98. t. 36. A. 



Hab. S. Chili and Juan Fernandez. — A closely allied plant grows in Peru (Lechler, 

 2563) with robust fronds 10 in. I., a tomentose rach's, and the lower pinnffi with deeply 



