208 



E. Campbellii, Baker. — Rootstock as thick as a quill or less, short or 

 elongated, fibrous below, the apex freely clothed with small brown 

 reticulated scales ; stipites tufted, 3-5 in. 1. wiry, dark brown, sparsely 

 clothed with spreading brown hairs, articulated and clavate at the base ; 

 fronds linear-oblong, or oblanceolate, 3-6 in. 1. |-1 in. w. coriaceous, 

 pellucid, slightly ciliate at first, chiefly on the margins, at length glab- 

 rous ; apex obtuse, the sides even sinuate or lobate ; midrib and veins 

 concealed in the parenchyma, the latter very oblique, branched, the ends 

 united within the margin; sori X-\\ li. 1. oblique in 1-2 series chiefly 

 in the upper half or two-thirds of the frond, immersed in slit-like cavi- 

 ties, the edges of which at length open and abundantly reveal the 

 ruddy erupting sporangia. Baker in Trans. Linn. Soc. Ser. 2. Bot. 

 vol. II, p. 294, PI. 55. E. Fawcettii, Jenm. in Gard. Chron. 20th 

 Aug., 1895. 



Bare on the tops of high trees in the forests where Lcelia monophyllct 

 grows, Rose Hill and Green Hill Wood, St. Andrew Parish. The 

 species was first gathered on Roraima, British Guiana in 1884 and in 

 Jamaica three years later. Better Jamaica material gathered recently 

 (1895) show that the plants from the two countries are the same, only 

 differing, partly, in vestiture and size. The fronds are occasionally 

 forked apically or laterally or both, and possess a very close general 

 resemblance to Polypodium trifurcatum, Linn, with which it grows at 

 Roraima, and for which indeed it was mistaken when first gathered. 

 The sori are sometimes on the free veins enclosed in the areolae of the 

 connecting branches and again on the latter. 



Genus XXIX Hemionitis, Linn. 



Sori in continuous, forked or reticulated lines, superficial on the 

 veins, the entire ramification of which is sporangiferous ; veins 

 anastomosing, little or much reticulated ; fronds entire palmate or 

 pinnate. 



Hemionitis differs from Gymnogramme by the sori being continuous 

 and more or less reticulated and coextensive with the venation. It is 

 a small tropical genus, of less than a dozen species, half of which belong 

 to the New World ; and the rest to India, Java and Fiji. The 

 plants are relatively of small size or stature, and grow in open situations 

 on banks or rocks. 



Fronds palmate. — 1. H. palmata. 



Fronds pinnate. — 2. H. pinnata. 



1. H. palmata, Linn. — Rootstock erect, fibrous, rather slender, 

 clothed with narrow tawny scales ; stipites tufted, erect, ^-1 ft. 1. dark 

 and rather glossy, deciduously villose, scaly at the base ; fronds mem- 

 brano-herbaceous, densely pellucid dotted, dark green, tawny-villose ; 

 palmatifid, 3-5 inches each way, composed of 5 acute diverging nearly 

 equal divisions, that are in. w. 1-2| in. 1. entire or cut into broad 

 rounded appressed shallow lobes ; veins copiously reticulated ; sori 

 occupying the entire venation, forming copious elevated areolae, which 

 gradually diminish outwards to the margins ; barren fronds prostrate, 

 smaller, often only tripartite, with rounded lobes viviparous in the 

 sinuses, or much shorter slender stipites. — PI. Fil. t. 151. 81. Herb. p. 

 45. Hook Fil. Exot. t. 53. 



Common on open exposed banks below 2,000 ft. attitude. Well 



