MADE BY MR. W. POOL IN MADAGASCAR. 413 



ones free but sessile, the upper ones adnate. Texture moderately 

 firm ; both surfaces green. Rachis of the pinna? full brown, clothed 

 with dense short tomentum above, and abundant minute scales be- 

 neath ; and those of the pinnules and segments also densely scaly. 

 Veins of the tertiary segments 6-8-jugate, forked. Sori large, cos- 

 tular, crowded, filling up the whole of the segments except the 

 tips and very edge. Receptacle densely paraphysate. 



Most like the South-American A. paleolata. Only three Also- 

 philas were known in Africa previously, and none in Madagascar. 



Hymenophyllum ciliatum, Sw. 



H. POLYANTHOS, Sw. 



34*. H. Poolii, Baker, n. sp. Rhizome thread-like, wide- creeping. 

 Stipe 1^-3 in. long, filiform, thinly beset with fine spreading hairs. 

 Frond lanceolate, 2-3-pinnatifid, 3-5 in. long, f-f in. broad. 

 Pinnae sessile, rhomboid, erecto-patent, £ in. broad, cuneate-trun- 

 cate on the lower side at the base, cut down to a distinct wing 

 into close, ligulate, erecto-patent, one-nerved % segments |-i in. long. 

 § line broad, only the lowest anterior ones in the most fully developed 

 pinnae forked. Texture very thin, delicate, and elastic. Hairs on 

 the edge and ribs abundant, often conspicuously stellate. Main ra- 

 chis filiform at the base, winged above the middle. Sori many to a 

 pinna, terminal. Valves of the involucre hemispherical, densely 

 pilose. 



Most like the slender varieties of H. subtilissimwm, but the 

 frond different in shape, and the secondary segments much longer 

 and fewer. 



Trichomanes quercifolium, Hook. Sf Grev. 



T. PYXIDIFERUM, L. 



T. radicans, var. T. giganteum, Bory. 



_ m 



Dicksokia Henrietta, Baker. 



A fine suite of specimens of this, which was published in the 

 second edition of ' Synopsis Filicum,' from a single small example 

 sent by my relative Miss Henrietta Baker. Some of Mr. Pool's 

 specimens are 4-pinnate, with pinnae above a foot long and half a 

 foot broad. 



Davallia thecifera, H. B. $ K. 

 D. elegans, Sw. 

 D. tenuifolia, Sw. 



D. ferruginba, Desv. 



2 2 



