22. OCIIROPTERIS. 127 



Hewardia, J. Smith. Veins anastomosing. Sp. 59-62. 



59. A. (Hew.) Hewardia, Kunze ; st. 6-9 in. 1., erect, blackish, glossy, naked ; 

 fr. simply pinnate or bipinnate, with a terminal pinna and 2 to 4 lateral ones on 

 each side, the lowest pair of branches sometimes with 2 to 4 pinnules each ; 

 pinnl. 3-4 in. 1., f-1 in. br., nearly equal-sided except at the base, ovate-lan- 

 ceolate, very nearly entire ; texture papyraceo-herbaceous ; rachis polished, naked ; 

 veins copiously anastomosing, midrib distinct, blackish ; sori in continuous lines 

 along both edges. Hk. Sp. 2. p. 7. Hewardia adiantoides, J. Smith. 



Hab. Guiana. The texture of the frond is thinner than in the next species, and the 

 veins are more distinct and copiously and conspicuously reticulated. 



60. A. (Hew.) dolosum, Kunze; st. 6-12 in. ]., erect, polished, blackish, 

 slightly hairy ; fr. 9-12 in. 1., 6-12 in. br., simply pinnate, with a large terminal 

 pinna and 2 to 6 subsessile lateral ones on each side, which are 4-6 in. 1., 1-2 in. 

 br., ovate or ovate-lanceolate, acuminate, nearly entire ; texture subcoriaceous ; 

 rachis hairy, veins inconspicuous and only uniting towards the edge, midrib 

 black, distinct ; sori in continuous lines along both edges. Hk. Sp. 2. p. 6. t. 79. 

 B. A. Wilsoni, Hk. Sp. 2. p. 6. t. 72. A. A. macropterum, Miguel. 



Hab. Jamaica, Guatemala. Panama, Granada, Guiana, and Brazil. Scarcely deserving 

 a place in ffewardia, and, except in venation, the resemblance of the plant is altogether 

 to A . lucidum and Phyllitid'ts. 



61. A. (Hew.) olivaceum, Baker ; st. 6-9 in. 1., erect, glossy, blackish, naked ; 

 fr. about 1 ft. each way, with a terminal central pinna and one nearly equalling 

 it on each side ; pinnce with a large terminal pinnule and several stalked lateral 

 ones on each side, which are 4-5 in. 1., about f in. br., lanceolate-acuminate, 

 equal-sided, but obliquely truncate at the base below, broadly lobed throughout ; 

 texture papyraceo-herbaceous, the rachis slightly tomentose ; veins conspicuous 

 and copiously anastomosing, the midrib distinct, black, glossy ; sori in linear 

 patches j in. br. in the lobes on each side. 



Hab. British Guiana, Appun, No. 646. This resembles A. Hewardia in texture and 

 venation, differing in the branching and sori. 



62. A. (Hew..) Leprieurii, Hk. ; st. 6-9 in. 1., erect, naked, blackish, glossy ; 

 fr. 9-15 in. 1., 6-9 in. br., deltoid tripinnate, with a terminal pinna 6-9 in. 1., 2 in. 

 br., and 2 or 3 branches on each side, the lowest of which are branched again ; 

 pinnl. 1-1^ in. 1., -f in br., subdimidiate, the lower line curved so that the 

 inner part of the lower half is cut away, the upper edge rounded, the point 

 bluntish or acuminate ; texture papyraceo-herbaceous ; rachis tomentose ; veins 

 anastomosing but not copiously, no distinct midrib ; sori in linear patches 

 i-1 in. across on the broad lobes of the upper edge and outer part of the lower 

 edge.HL Sp. 2. p. 31. t. 82. B. 



Hab. Guiana ; gathered by Leprieur, Schomburgk, and Appun. Easily distin- 

 guished from the other three by the subdimidiate pinnules without any distinctly-defined 

 midrib. \ 



GEN. 22. OCHROPTERIS, J. Sm. 



Sori marginal, transversely oblong, occupying the apices of the lobes of the 

 segments. Invol. the same shape as the sorus, formed of the reflexed margin of 

 the frond, with which it coincides in texture and covering the sorus. A single 

 Mauritian species with free veins, and the texture and habit of an ample decompound 

 Davallia. TAB. II. f. 22. 



1. O. pattens, J. Smith ; st. 2 ft. 1., pale straw-coloured, naked ; fr. about the 

 same length, about 1 ft. br., deltoid, quadripinnatifid ; lower pinnl. 3-4 in. 1., 



