Ehynchostegimii] mosses (Gepp). 301 



in the British Museum set. In company with Fissidens glaucknimus 

 (No. 142) in grottoes by the river Luinha ; sterile July 1856. No. 203. 



3. R. oxyodon 



Hypnum (Ectropothecittm) oxyodon Welw. et Dnby in Geneve, 

 Mem. Soc. Phys. XXI. ii. p. 432. t. iii. fig. 7 (1872). Ectropothecium 

 oxyodon Jaeg. et Sauerb. Gen. et Spec. Muse. ii. p. 537 (1879). 



Cazengo. — Leaves singly nerved, serrate. On a trunk ejected by a 

 rushing rivulet at an elevation of 2000 ft. on Serra de Muohaula ; a 

 few specimens with old fr. Jan. 1855. No. 185. 



GoLUN'GO Alto. — Leaves ovate, shortly acuminate, singly nerved, 

 with margin acutely serrate ; not sent to Duby. Pound sparingly in 

 company with Marchantia at Fonte de Capopa, near Canguerasange ; 

 without fr. 1 Dec. 1854. No. 195. On the rocks of the Casaballa 

 rivulet in Sobato de Bumba ; without fr. Dec. 1855. No. 216. Also 

 seen by Welwitsch in the Quisucula, Aug. 1867. 



37. RAPHIDOSTEGIUM De Not. Epilogo d. Briol. Ital. 

 pp. 17, 182. Rhaphidostegium, op. cii., p. 777 (1869). 



1. R. variegatum. 



Hypnum variegatum Welw. et Duby in Geneve, M6m. Soc. 

 Phys. XXI. ii. p. 436. t. iv. fig. 4 (1872). ? Taxithelium variega- 

 tum Jaeg. et. Sauerb. Gen. et Spec. Muse. ii. p. 489 (1878). 



HuiLLA. — A widely caaspitose, flavescent-green moss ; fruit-stalks 

 fusco-coccineous erect ; capsules inclined ; calyptras elongate-cylin- 

 drical, smooth, yellow, dropping ofE long before maturity. Common, 

 but rather rarely fruiting, at the foot of trees on the bushy swampy 

 plain near Humpata and Empalanca, atan elevation of 5100 to 5300 ft.; 

 with fr. Feb. 1860. No. 34. On the ground among bushes by the 

 cataract of Ferrao da Sola in the elevated plain of Lopollo ; without 

 fr. Feb. 1860. No. 21. Intermixed with Isopterygkvm at the foot of 

 trees between Lopollo and Lake Ivantfila ; Feb. 1860. No. 45 in part. 



2. R. concolor Gepp, sp. n. 



Dioicous. Plant slender, csespitose, in tufts 7 cm. wide, 

 fiavescent-green, shining. Stem creeping, with scattered rootlets, 

 pinnately branched. Branches numerous, suberect, mostly simple, 

 8 mm. long, homomallophyllous, 1'25 mm. wide with the leaves. 

 Leaves sub-orthostichous, imbricate, erecto-patent, from a con- 

 tracted base ovate, suddenly longly and narrowly acuminate, 

 excavate, vidth margins more or less revolute, serrulate above 

 middle, subserrate towards apex, with two short nerves ; cells 

 elongate narrowly sinuato-elliptic, very dilutely chlorophyllose, 

 with pellucid hyaline cell- walls ; lowest basal cells concolorous ; 

 alar cells 3 or 4, very lax, hyaline, very thin-walled ; supra- 

 alar few, lax, hyaline. Perichsetial bracts 8, erect; outer 0'6 

 to 0'8 mm. long, lanceolate acuminate; innermost 2 '5 mm. long, 

 elliptic lanceolate, suddenly very longly and narrowly attenuate, 

 remotely serrate towards apex, with cells larger and firmer. Seta 

 15 mm. long, very slender, pale reddish, smooth, . bent at apex. 

 Theca inclined or horizontal, longly ellipsoidal, with a short neck, 

 fuscous. Peristome as in R. variegatum. Operculum convex, 

 shortly and bluntly rostrate. 



