302 mosses (Grepp). [Raphidostegvwm 
HuiLLA. — A widely caespitose moss, of a brilliant green colour, or 
sometimes of a shining flavescent green. Common, but seldom bearing 
fruit, on the ground or at the foot of old trees in forests between 
Lopollo and the Moniuo river : with fr. end of Dec. 1859. No. 36. 
This species is very closely related to R. variegatwn in the shape of 
the leaves and the peristome ; but appears to be sufficiently distinct 
in the glistening uniformly green colour, pinnate ramification, longer 
branchlets, more erect leaves with more delicate less distinct cells, and 
longer capsule. In R. variegatum the nerves and cell-walls of the 
leaves are lutescent, and the cell contents are contracted into a thin 
sinuate more or less evanescent thread. 
:;. R. physaophyllos. 
Hypnum (Isothecvum) physaophyllos Welw. et Duby in Genfrve, 
Mem. Soc. Pliys. XXI. ii. p. 434.'t. iv. fig. 2 (1872). Isotheciwm 
physaphyllos Jaeg. et Sauerb. Gen. et Spec. Muse. ii. p. 366 (1878). 
PUNGO ANDONGO. — A deep green, densely c;espitose moss ; on damp 
ground and at the foot of old tree-trunks in forests between Mutollo 
and Candumba, but very rarely bearing fruit ; with fr. beginning of 
March 1857. No. 100. 
This species is less robust than R. chrysotis Broth. [Engl. Bot. Jahrb. 
XXIV. ii. p. 275 (1897)], and is of a brighter and more uniform green 
colour : but in that species it appears to find its nearest ally. In the 
theca there is a close resemblance, but Duby found no cilia in the 
peristome. The leaves of Welwitsch's plant are more crowded, less 
spreading, shorter, longly acuminate, with margins usually recurved, 
with two very short nerves, and alar cells four instead of six, and not 
forming an auricle. The branches are obtuse, not pungent, at apex. 
With the above species should be compared the following : — 
GOLUNGO Alto. — On bark with Rhynchostegium luteo-nitens, Zengas 
do Queta ; without fr. No. 217, in part. 
To the present genus are to be referred the following numbers 
in the British Museum : — 
Pungo Andongo. — A creeping moss with ascending branches. 
Apparently rather rare on dead branches of Vellosice, on the more 
elevated rocks within the presidium ; with scanty fr. end of April 
1857. No. 73. 
GOLUNGO Alto. — In company with Xo. 170 (Stereophyllum lingua- 
jolhun) and with some Hepatics on the bark of trees growing in the 
shady forests of Serra, de Alto Queta ; with fr. July 1856. Amongst 
Hepatics, Queta Central : with fr. July 1S56. Alto Queta Central : 
with fr. July 1856 ; in company with Xo. 167 {Porotrichum dongatum) 
on rather stout living trunks in dense primitive woods near Trombeta; 
with fr. Aug. 1857. No. 171. 
38. TRICHOSTELEUM Mitt, in Journ. Linn. Soc. x. p. 181 (1869). 
1. T. truncatum. 
Homalia truncata Welw. et Duby in Geneve, Mem. Soc. Phys. 
XXI. ii. p. 430. t, iii. fig. 5 (1872). 
Pungo Axdoxgo.— A widely caaspitose, glaucous-green moss, 
occurring sparsely in rocky shady places at Luxillo, but bearing very 
scanty fruit; with fr. May 1857. No. 105. Creeping on the bare 
roots of small ferns (Asplenium) by the banks of rivulets in Barranco 
de S. Antonio within the presidium ; without fr. May 1*57. No. 114. 
