MR. RICHARD SPRUCE’S HEPATICE ELLIOTTIAN®. 369 
no. 7394 (Brazil) has root-hairs scattered over the whole under- 
surface, and cells 0:028 mm. wide; Balansa no. 4334 (Paraguay ) 
has root-hairs beneath the midrib and margins, but rarely on 
lamina, cells 0-041 mm. wide.—A, G.] 
155. MutzGerta LEPTONEURA, Spruce, in Trans. Bot. Soc. Edinb. 
XV. p. 555.—St. Vincent, Richmond Peak (217). 
Var.—Dominica, Morne Trois Pitons (725). 
Subordo IT. MARCHANTIACE. 
Genus 28. Dumortiera, Nees. 
156. D. urrsura, Reinw., Blume et Nees, in Syn. Hep. p. 543.— 
St. Vincent, Richmond Valley (194). Dominica. 
This species grows along with Monoc/ea in both the islands at 
a moderate elevation ; as it does also in the Peruvian Andes, 
where neither species ascends above a thousand metres. 
Genus 29. Marcuantia, Mich. 
157. M. cuenopopa, Linn. Sp. Pl. ed. I. 1137—St. Vincent, 
Kingstown (232). Dominica, Roseau Valley (61). 
Though Mr. Elliott’s collections contain only this, the common 
montane species of tropical America, it is probable that other 
species exist in the two islands. 
Subordo III. RICCIACEZ. 
Genus 30. Ricora, Mich. 
158. R. e@tavca, Linn. Sp. Pl. ed. I. 1137, var. ?—Dominica, 
Roseau Valley (500). 
To this species, as a large form, I refer the only specimens of 
this genus collected; but they may be distinct. 
Subordo IV. ANTHOCEROTACE. 
Genus 31. Denproceros, Nees. 
159. D. crrsparus, Nees, in Syn. Hep. p. 579.—St. Vincent, 
Richmond Valley (224), on rocks. 
160. D. crispus, ees, in Syn. Hep. p. 581.—Dominica, Grande 
Souffriére (870). 
Fertile specimens of both species were gathered. D. erispatus 
is well figured by Hooker in the Ist vol. of his ‘ Botanical Mis- 
cellany,’ tab, 27. 
