122 HANDr.OOK OF BRITISH HEPATIC.^. 



Jitiigcniuvuiia Nevicensis, Carr. Trans. Bot. 

 Soc. Edin., XIII. , p. 464, t. 17, f. 2 ; Carr. 

 and Pears. Exs. No. 85. Hygrohiella Neviccu- 

 sis, Spruce Cephalozia, p. 77. 



On moist shelving rocks.— (Plate 2, fo^. 27.) 



Tufts cushion-like, pale green. Stems i to J inch 

 long, mostly simple, recurved at the summit, naked 

 below. Leaves alternate, remote, round, and 

 sheathing at the base, shortly bidentate, sinus 

 narrow, lobes connivent. Texture thin, translucent, 

 marginal cells subquadrate, others hexagonal. 



The tufts resemble in size attenuate forms of 

 /uuo-. bicuspidata, but the vertically patent con- 

 duplicate distant leaves, and absence of rootlets, 

 on all parts, distinguish it from that and other 

 allied forms. The colour is pale lustreless 

 yellowish green, stolons stramineous, sometimes 

 the foliage is tinged with brown. Fructification 

 unknown. 



Genus 18. PLEUROCLADA, Spruce. 



Glaucescent in colour, stem radicellose, 

 throughout its length almost equally foliate, 

 base not rhizomatose, and not llagelliferous, 

 subpinnately branched, branches all lateral. 

 Base of the cauline leaves difformed (uni- 

 lobed), crov^^ded, leaves very concave, scarcely 

 complicate ; perianth very fleshy, subfloral 

 innovations none. — On Cephalozia, p. 77 . 



The Jiingcyinaiinia albescens of Hooker, which, 



