300 mosses (Gepp). | Trachyphylkvm 
5. T. Ferriezti from Mayotte (Marie). 
Leptohymenium Ferriezii Marie a pud Besch. in Ann. Sci. Nat. 
ser. 7. ii. p. 95 (1885). 
6. T. curvifolium from Rodriguez (Balfour). 
Pterogonium cu/rvi 'folium Mitt, in Phil. Trans. Roy. Soc. 1(58, 
p. 392, t. 37, fig. c. (1879). 
Possibly Pylaisia Dusenii CM., described by Broth, in Engl. 
Bot. Jahrb. xxiv. 2, p. 261 (1897), from Kamerun (Dusen, n. > s 10), 
also belongs to this genus. 
36. RHYNCHOSTEGIUM Schimp. in Br. Sch. et Guemb. Bry. 
Eur. v. (1851-55). 
1. E. Hopfferi. 
Hypnurn (Brachythecium) Hopff&ri Welw. et Duby in Geneve, 
Mem. Soc. Phys. XXI. ii. p. 431. t. ii. fig. 2 (1872). Brachythecium 
Popfferi Jaeg. et Sauerb. Gen. et Spec. Muse. ii. p. 392 (1878). 
St. Thomas's Island. — A beautiful species, named after the dis- 
tinguished Dr. Frid. Hopffer, Medical Officer of Health in the Cape de 
Vei'de Islands. Welwitsch proceeds to describe this moss as caespitose, 
with a Hypnoid habit, or rather with the habit of a Hookeria ; with 
stems prostrate rooting, and leaves distichous bright green. Plant of 
a bright and varying green colour ; leaves from a wide amplexicaul 
base ovate-lanceolate, gradually acuminate, nerveless, densely areolate 
with narrow elongate cells : margin serrulate. Rather rare, growing 
with Hepatics on old trunks in the dense primitive forests of Novo 
Destino, at an elevation of about 2500 ft. ; with fr. Dec. 1860. No. 125. 
This species is closely related to R. megapelma C. Muell. in Dusen, 
Musci Africani Camerun. exsicc. No. 221, which is described under 
Hypnurn (Rhynchoxteghtm) megapelma by Brotherus in Engl. Bot. 
Jahrb. xx. p. 212 (1894). But Welwitsch's plant is distinct in its 
lighter brighter colour, its less crowded leaves, more chlorophyllose 
leaf -cells, and stouter untwisted seta. 
2. R. luteo-nitens Jaeg. et Sauerb. Gen. et Spec. Muse. ii. 
p. 434 (187S). 
Hypnwm (Bhynchostegium ?) luteo-nitens Welw. et Duby in 
Geneve, Mem. Soc. Phys. XXI. ii. p. 435. t. iv. fig. 1 (1872). 
GoLTTNGO Alto. — Growing in company with Racqpilum tomentosum, 
Hepatics and Adiantum Capillus Veneris, and covering with wide 
patches of intense green the rocks by the great cataract of the Cuango 
stream, but very rarely producing fruit ; sparingly with fruit and 
opercula Aug. 1855 ; but when Welwitsch returned in the ensuing 
December to collect this moss in good fruiting state, he found its 
whole splendour destroyed by the superabundance of the water of the 
fall, the plants being partly submerged. No. 178. Closely mingled with 
Ectropothecium gnlungense on moist shaded rocks in primitive woods 
above Undelle at the spot called " O Quibolo " ; without fr. July 1856. 
No. 154, in part. With the same moss on the ground and on shaded 
sandy rocks around the Fonte de Capopa near Sange ; without fr. March 
1856. No. 180 in part. With the same moss on iron-sandstone rocks 
in shaded spots between Undelle and the Capopa stream ; without fr. 
April 1859. No. 187 in part. With a species of Raphidostegium on 
bark, Zengas do Queta ; without fr. No. 217. Cascate de Congo and 
de Cuanza, with scarcely any f r. Feb. 1856, March 1857. With No. 178 
