METZaEllIA. 461 



Found on the Continent, North Anioricu ; Simla, Himalayas. 



(Jbs. — The fronds, being densel}^ villose on the antical surface, 

 distinguished the plant at once from the other species of the 

 ^•('11 us. 



Description of Plate CCV. — Fig-. 1. Plants nat. size (Eng. 

 Bot.). !2. Ditto (Hooker). 3. Portion of I'rond, antical view x 

 (ditto). 4. Cross-section of portion of frond x 60 (Elfving). 

 5. Portion of frond, bearing antheridia x (Hooker). 6. Anthe- 

 ridium x (ditto). 



2. Metzgeria furcata (L.), Radd. 



Lichenastrum saxatile erectuvi, temufolium, furcatam, Dill. Cat. pi. Giss. p. 21 ;> 



(1718). 

 Lichenastrum fur catum, Dill. Hist. Muse. p. h\o, ut synon. (1741). 

 Jungennania /areata, L. Sp. pi, 1, ed. 2, p. lloG,n. 20, excl. synon. Mich. (1753). 

 Metzyeria glabra, Rad. in Att. soc. Modena, 18, p. 45 (1818). 

 Metzgeria /areata, Dum. Recueil, 1, p. 2(), min. p. (1835). 



Dioicous, coespitose, closely jDressed to surface, small; pale to 

 yellowish-green in colour. Fronds imbricating, irregularly 

 branched and furcate, sometimes subsimple or alternately sub- 

 pinnate, linear, here and there narrower, plane or undulate, 

 sometimes slightly convex, antical surface smooth, postical 

 clothed with long white hairs, which are single, most being 

 usually near the midrib and margin ; midrib prominent, projecting 

 only on the postical side, a cross-section showing it to be oval, 

 and about 10 cells in circumference; texture thin,membranaceou.^, 

 one cell thick; cells medium to rather large, regularly 5- and G- 

 angled, lax and chlorophyllose, walls thickened. Female inflores- 

 cence produced from the midrib on the postical side, bracts 

 two, very small, convex, roundish, nerveless, ciliate. Calyptra 

 elongato-pyriform, carnose, beset with short rigid setie. Pedicel 

 short. Capsule subglobose, brown, when ripe splitting to the 

 base into 4 valves, walls composed of two layers of cells, the 

 inner with semi-annular threads. Spores greenish-yellow, 

 tetrahedral-roundish, finely granulate, broader than the elaters. 



