16. HYMENOPHYLLUM. 67 



in the frond ; valves rounded, strongly ciliated. H. pulchellum, Hk. Syn. 1. p. 

 91, in part. 



Hab. Andes of Ecuador and Columbia, ascending to 13,000 ft. Closely allied to 

 H. lineare in its manner of growth, but a much larger plant, with broader and shorter" 

 segments. The original H. pulchellum appears to be a small state of sericeum. This and 

 the preceding are the only simply pinnate hairy species with divided pinnae. 



50. H. Catherines, Hk., MSS. ; st. 1-2 in. 1., erect, wiry, slightly ciliated ; fr. 

 2-3 in. 1., 1-1^ in. br., oblong, fully bipinnate ; main rachis free throughout, 

 slightly ciliated ; lower pinnae broadly rhomboidal, cleft down to the rachis ; the 

 lower pinnl. several times forked, with very narrow linear ciliated segm. about 

 2 lin. 1. ; sori 6 or more to each pinna, terminal on the segments of the upper 

 pinnse on both sides, considerably broader than the segments, the cuneate base 

 sunk in the frond ; the ciliated valves divided about halfway down. 



Hab. St. Catherine's Peak, Jamaica, at an elevation of 5,000 ft., Wilson; Guadeloupe, 

 L'Herminier. A small, neat, deeply-cut plant with inconspicuous hairs. The Guade- 

 loupe plant was distributed by M. Fe"e as H. protrusum, Hook., which belongs to the 

 glabrous section, and is a form of H. pofyanthos. 



51. H. Pastoensis, Hk., MSS. ; st. 4-6 in. 1., stout, erect, densely villose ; fr. 

 6-12 in. 1., 4-6 in. br., ovate-acuminate, fully bipinnate ; rachis strong, erect, 

 densely clothed with ferruginous hairs ; pinnae ovate-lanceolate, recurved ; lower 

 pinnl. 1 in. or more 1., divided down nearly to the costa into very long narrow 

 linear segments, hairy principally on the rachis and margin ; sori 12 to 20, ter- 

 minal on and broader than the segments ; invol. orbicular, free, deeply 2-valved ; 

 the valves only ciliated . 



Hab. Volcano of Pasto, Andes of N. Ecuador, Jameson. This and the preceding (both 

 new species) are interesting, as showing a much more divided type of form in the frond 

 than was known previously in this section. 



**** Leptocionium, Presl, V.D.B.; margin of the frond spinuloso-dentate. 

 All the species are more or less compound. Sp. 62-71. 



* Frond not crisped. Sp. 52-66. 



52. H. Tunbridgense, Smith ; st. ^-l in. 1. ; fr. oblong-lanceolate, 1-3 in. 1., 

 |r-l in br., pinnate throughout ; pinnce distichous, flabellato-pinnatifid ; the lobes 

 linear, 1-3 lin. 1., and, as well as the usually solitary axillary suborbicular com- 

 pound invol.., conspicuously spinuloso-serrated ; the rachis and upper part of the 

 main stem winged. Hk. Sp. I. p. 95. Brit. Ferns, t. 43. /3, H. Wilsoni, Hk. 

 Invol. entire ; pinnce with fewer lobes, pinnatifid on the upper side only. Hk. 

 Sp. \.p. 96. Brit. Ferns, t. 44. 



Hab. Regarding these two as British plants alone, we should pronounce them readily 

 separable by the characters given, which are taken from our two indigenous plants ; but, 

 looking abroad, we find them connected by every intermediate stage of gradation. Four- 

 teen species admitted or proposed by Van den Bosch cannot be clearly separated. To 

 our a belong his Tunbridgense (Britain, Normandy, Corsica, Tyrol, Italy) ; Dregeanum, 

 Presl (S. Africa) ; minimum, Puchd. (Auckland Islands) ; antarcticum, Pr. (N. S. Wales 

 and V. D. Land) ; asperulum, Kunze (Chili) ; and Zeelandicum, V. D. B. (New Zealand). 

 Some of the Cape specimens are bipinnate, and have the lower pinnse fully 2 in. 1. A 

 plant from the Falkland Islands has the pinnae only once forked, or even simple : a grows 

 also in the Mauritius, JVIadeira, the Azores, Jamaica, and Venezuela. To j3 belong 

 Wilsoni (Britain, Feroe, Norway) ; megachilum, Pr. (Brazil) ; unilaterale, Bory (Bourbon) ; 

 Meyeri, Pr. (S. Africa) ; affine, Brack. (Fiji group) ; cupressiforme, Lab. (New Zealand 

 and Australia) ; Menziesii (Falkland Islands, Staten Land, Cape Horn) ; and Mettenii 

 (Chili) : and it grows also in Guatemala and the Peruvian Andes. 



