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t 



FERNS : SYNOPTICAL LIST LIX. 



Additions to Synoptical List, icith descriptions, of the Ferns and tern- 

 Allies of Jamaica. By the late G- S Jenman, Superintendent, Bo- 

 tanical Gardens, Demerara.* 



Trichomanes solitarum, Jenm.—Eoot stock thread-like, freely repent, 

 sinuated, tomentose, and much branched ; fronds dark, dull green, 

 abundant, scattered; stipites I-I2 line lono-, rusty like the rootstock ; 

 blade finely striated, 3 or 4 lines long, 1-4 lines wide, the bate cuneate, 

 or subcordate, barren ones lanceolate or suborbicular entire, indented 

 or sometimes cleft; fertile, often bat-like, the sides spreading and in- 

 cised, deeply cleft and open at the top, with 1-4 stipitate, entirely free 

 sori in the cleft, sunk within or much protiuded; midrib evanescent 

 above the base, veins fine, close, flabellate, forked ; involucres urn- 

 shaped, with rounded club-like lips.— Grard. Chron., Nov. 17. 1894. 



Jamaica and Gienada.— The barren fronds of this might easily be 

 taken f < r those of T. setiferum T. or apodum, the species being of like 

 small size, but the fertile fronds of each are quite different, many in 

 this resembling a pair of spreading incised wings, with the free sorus 

 extended or not, neck and head — as of a water-bird when flying — in 

 the deep cleft between. Occasionally a fertile frond is linear. 



Adiantvm dissimvlalnm, Jenm. — Stipites erect, f 1^ ft. 1., black, 

 polished ; fronds erect, 1-1^ ft, 1., 5-10 in. w., bipinnate, firmly char- 

 taceous, neked, dark green, consisting of a long central pirnate portion 

 and two to three basal, much smaller, spreading, pinnate branches ; 

 rachis and costae like the stipites ; leaflets apart or contiguous, sessik, 

 deltoid-rhomboidal on the central branch, varying to oblong or ovate- 

 oblong in the inferior ones of the lower branches, the terminal elon- 

 gated ; veins free, fine, close, flabellate, repeatedly forked; margins 

 dentate when barren ; sori C( ntinuous around all but the basal and in- 

 terior margins. — Gard. Chron., Dec. 1st 1894. 



Jamaica, Bull Head. Clarendon, 8,000 ft. alt., collected by Mr. Hart. 

 Resembling in general habit A Kendalii, but with different shaped 

 pinnules, firmer texture, striated surface, and difierent arrangement of 

 the sori. 



A. littorale, Jenm. n. sp. — Stripes tufted, polished, ebeneous, or dark 

 chestnut, slender, 5-10 in. 1. ; fronds tripinnate, ^-1 ft. 1., nearly as w. 

 papyraceous-herbaceous, clear green, naked, rachis slender, polished ; 

 pinngo spreading lower largest and most compound, upper simply pin- 

 nate, all parts freely petiolate ; segments deciduous \-l in. b. and d. 

 varying from rhomboidal to flabellate-cuneate, the outer margin usually 

 rounded and freely incised, the incisions deeper in the barren fronds, 

 pedicels hairlike 1-1^ li. 1. articulated at the top; veins free, flabellate, 

 fine and close, repeatedly forked ; sori oblong or subreniform, varying 

 in length as the lobes of the margin vary in width. 



Jamaica.— Very abundant on the rocky cliffs of the coast, in some 

 places within wash of the sea spray. The freely and deeply incised 

 margins gives this s close resemblance to Capillus veneris, from which 

 it is however clearly distinguished by the articulation of the segments, 

 which are almost as deciduous us those of fragile. It is generally a 



* From Bulletin of Miscellaneous Iiformation, Botanical Department, Trinidad. 



