16. HTMESOPHYLLUM. 67 



in the frond ; valves rounded, strongly ciliated. — H. pulchellum, Hk. S^/n. I. 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.pulehdlvm appears to be a small state of sericmm. This and 

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



SO. H. Catherince, Hk., MSS. ; St. 1-2 in. I., erect, wiry, slightly ciliated ; fr. 

 2-3 in. I., l-lj in. br., oblong, fully bipinnate ; main rachis free throughout, 

 slightly ciliated ; lower pinnce broadly rhomboidal, cleft down to the racliis ; 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 

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

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

 Fee. 



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

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

 loupe plant was distributed by M. F^e as M. proirusum, Hook., which belongs to the 

 glabrous section, and is a form of S. polyanthoa. 



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

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

 densely clothed with ferruginous hairs ; pinnce 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 ciUated, 



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. 52-71. 



* Frond not crisped. Sp. 52-66. 



62. H. Tanhridgense, Smith ; st. ^\\ in. 1. ; fr. oblong-lanceolate, 1-3 in. 1., 

 ^1 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. 1. p. 95. Brit. Ferns, t. 43. — P, H. Wilsoni, Hk. — 

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

 Sp. l.p. 96. Brit. Ferns, t. 44. H. peltatum (Pair.) oldest name. 



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 Timbridgense (Britain, Normandy, Corsica, Tyrol, Itsdy) ; Dregeanum, 

 Presl (S. Africa) ; dimidiatum, Mett., (N. Caledonia) antarctieum, Vt, (N . ^. Wales 

 and V. D. Land) ; agendum, Kunze (Chili) ; and seelcmdicum, V. D. B. (New Zealand). 

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

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

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

 Wilsoni (Britain, Feroe, Norway) ; megachilium, Pr. (Brazil) ; vnilaterale, Bory (Bourbon) ; 

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

 and Australia) ; Meaziesii (Falkland Islands, Staten Land, Cape Horn) ; and Mettemii 

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



