43. ASPIDIUM, § POLYSTICIIUM. 210 



Pol^'stichum, Roth. Veins all free. Sp. 1-42. Texture more or less 

 coriaceous i7i all except species 1, 4, 38, 89, and 41, and teeth usually awned. 



* Frond pinnatifid only. Sp. 1-2. 



1. A. (Polyst.) cila)idulosum, Hk. & Gr. ; st. tufted, very short ; fr. 0-8 in. 1., 

 1-l.Tin. br., oblong-lanceolate, tapering to both ends, cut down nearly to the 

 rachis above and quite below into bluntly sinuated linear-oblong lobes, 

 emarginate on the upper, decurrent on the lower side at the base ; texture 

 herbaceous; rachis and both surfaces finely glanduloso-pilose ; veins pinnate, 

 the veinlets in groups of three ; sori 2-8 to a pinna, midway between the midrib 

 and edge.— ///i-. Sp. 4. p. 6. BL <& Gr. t. 140. {_not Blume). 



Hab. Cuba and Jamaica. 



2. A. (Polyst.) Plaschnickianum, Kunze ; st. tufted, 3-4 in. 1., slender, fibrillose 

 below ; fr. 4-G in. 1., ^-| in. br., lanceolate, rooting at the point, suhentire or 

 slightly or deeply lobed at the base ; texture coriaceous ; both surfaces sliLjbtly 

 fibrillose; lower veins in groups of four; sori copious, scattered. — Ilk. kip. 4. 

 p. 7. t. 211. 



Hab. Jamaica. — According to Grisebach, a less cut form of species 3. 



** Fronds once pinnate, the lower pinnce entire or pinnatifid helow. Sp. 3-17. 



8. A. (Polyst.) rhizophyllum, Swz. ; st. tufted, 1-2 in. 1., filirillose, slender ; fr. 

 2-G in. 1., I in br., with the long, narrow, ujiper half of the frond lengthened 

 out and rooting, the lower half cut down to a flattened fibrillose rachis into 

 oblong rhomlioidal subentire lobes, ||-^ in. br., j in. deep ; texture sul)coriaceous ; 

 veins copiously pinnate in the lobes; sori scattered.— //>^. *S)9. 4./). 7. Hk. di 

 Gr. Ic. t. 59. 



Hab. Jamaica and Cuba. 



4. A. (Polyst.) seniicordatum, Sw. ; st. scattered, fi-12 in. 1., fibrillose at the 

 base ; fr. 2-3 ft. 1., 8-12 in. br., simply pinnate ; ^)m?«ob spreading, 4-G in. 1., 

 ^-f in. br., nearly entire, acuminate, cordate or truncate at tlie base ; texture 

 papyraceo-herbaceous or subcoriaceous, both sides naked and rachis nearly so ; 

 veins pinnate, the lower ones ending short of the edge ; sori in 1-3 rows on each 

 side, the inner one the most constant and regulai', close to the midrib. — Hk. Sp. 

 4. J). IG. Cyclopeltis, e/. Sin. 



Hab. Tropical Amerioa, from Cuba and Panama to Brazil and Peru ; Philippines, 

 Amboyna, Malayan Peninsula and I^les. — This corresponds to the genus Ilcmicardium 

 of Fee, who makes five species. A. Khif/ii, Hance (Ann. Sc. Nat. 4. ser. 18. p. 237), 

 from the Caroline Isles, is said to have blunt repand piunse 1^ in. I., under ^ in. br. ; 

 veins less branched, and fruit in a single line. 



6. A. (Polyst.) munitum, Kaulf. ; st. tufted, 4-9 in. 1., strong, straw-coloured, 

 densely clothed, especially below, with large glossy lanceolate scales ; fr. 1-2 

 ft. 1., 4-8 in. br. ; phmce close, 3-4 in. 1., §-^ in. br., the apex acuminate, the 

 edge finely spinuloso-serrated throughout, the upper side auricled and the lower 

 obliquely truncate at the base ; texture subcoriaceous ; rachis generally scaly ; 

 veinlets fine, close ; sori in two rows near the edge. — Hk. Sp. 4. p. 10. ^.219. 



Hab. Western N. America, from Nootka to California. 



6. A. (Polyst.) falcinellum, Swz. ; st. tufted, 4-8 in. 1., densely clothed, 

 especially below, with blackisli-brown lanceolate scales ; />'. 12-18 in. 1., 4-G in, 

 br. ; central pinnce with about their own space between them, 3 in. 1., ^ in. br., the 



2 I 



