Cahj ptothecium\ mosses (Gepp) 293 
Sterile. Secondary stems 5 to I" cm. long, densely or laxly 
pinnate or divided into two or three pinnate branches, yellowish 
green .-it apex, scarcely shining, dull and Lutescenl with 
a i decaying; pinnae 0'5 to 1*2 cm. Long, obtuse at apex, 
occasionally longer and attenuate a1 apex; Leaves 2*2 to 2*4 nun. 
long, - 9 mm. wide near base, complanate, rugulose when dry, From 
a wider auriculato-cordate base ovate then Ligulate (0*45 nun. 
wide), acute, shortly acuminate, either symmetrical and slightly 
hollowed, or concave on one Bide; margins Qexuose especially 
near base, entire or obsoletely serrulate below, serrulate uear 
apex; nerve Blender reaching or surpassing the middle of the 
Leaf; cells pellucid Linear vermicular, becoming elliptic and 
rhomboid obscure in the auricles and Lax quadrate, brown with 
age, at the basal angles ; cell -walls firm yellow Indistinct ly porose. 
This species is probably closely allied to N"eckem acutifolia Brid., 
as described bj Bescherelle in Ann. Sci. Nat. ser. 6, t. x. p. 273 
I L880), and still more to Calyptothecium subacutifolium Broth, in 
Engl. Bot. Jahrb. xxiv. ii. p. 254 (1897); but appears to differ 
from the Latter in the Lighter colour of the plant and in the less 
hollow more auriculate leaves, and from the former In the smaller 
size of the planl and the dull surface and different shape of the 
Leaves. The firm yellow cell-walls distinguish our plants from 
such allies as Neckera Moritzii C. Muell, and PUrobryum 
duplicatum Mitt., in which the cell-walls of the Leaves are thicker, 
cartilaginous and distinctly porose. 
1 S'OO Ail" <)n old trunks and rocks in the vicinity alongside 
brooks in the primitive forests of Zengas do Alto Queta and Mata de 
Quisucula; without Er. Feb. and July L856. No. 147. 
28. P0R0TRICHUM Doz. et Molk. Bry. Jav. ii. p. 69 (1862). 
1. P. lopidioides ('. Muell. in Dusen, Musci Africani Camerun. 
exsicc. No. 169 | L893). Paris, Index Bryolog. iv. p. 1015(1898). 
Hypnum (Thamnivm) africanum Welw. et Dub. in Geneve, 
Mem. Boa Phys. XXI ii. p. L-36. t. iii. fig. 1 (1872). Thamnium 
africanum Jaeg. Gen. el Spec. Muse. [I. p. 216 (1877). Tliiii<Jiniii 7 
filiforme Welw. et huh. in Geneve, Mem. Soc. Phys. XXI. ii. 
p. 436. t. iii. fig. 1 (TJmidiumjiUferum), (1872). 
Goli v." Ai.ii/. — [n a dense mass on rocks and tree-trunks by the 
Quarengue Btream on the Queta mountains; without fr. A.pril L856. 
No. 148. A widely csaspitose pendulous, dendrophilous m< 
trunks of trees (" Dizanha," TrecuLia africana) in the shadiest parts 
of the mountains of eastern Queta ; without Er. middle of dune 1857, 
No. 148''. In company with Cryphcea and other mo«ses on trunks 
and thicker branches of trees on tie- Bummit of Cungulungulo ; 
without fr. Feb. 1855. No. 168. Mixed with tufts of Racopilum 
tomentosum (No. 166) on bark in the woods of Alto Queta alongside 
the Catombe brook; without Er. and in -mall quantity end of dune. 
July L857. No. 169. Also alga No. 138. 
Sr. Thomas's Island. Growing with /'. <ji>,ii!.i-> on bark at the 
foot of trunks in dense woods at an elevation of 2500 ft., at Novo 
Destino ; without fr. Dec. I860. N". 124. 
< >ur plants are sterile and mostly -mall and unpi 
Vol, it. I'll 
