Rhynchosteymm] mosses (Clepp). 301 



in the British Museum set. In company with Fiss'idens (jlaucisaimus 

 (No. 142) in grottoes by the river Luinha ; sterile July 185G. No. 203. 



3. R. oxyodon 



Ilijpuitni {Ectropotheciuiv) oxyodon Welw. et Dnby in Geneve, 

 Mem.Soc. Phyy. XXI. ii. p. 432. t. iii. fig. 7 (1872). Ectropotliecium 

 oxyodon Jaeg. et Havierb. Gen. et Hpec. Muse. ii. p. 537 (1879). 



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

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

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



GoLUNGO Alto. — Leaves ovate, shortly acuminate, singly nerved, 

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

 company with Jfarclntiit/a 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. 1857. 



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

 pp. 17, 182. Iihaphidoste(jiHiii, op. cit., p. 777 (1869). 



1. R. variegatum. 



Ryjmuvi variegatum Welw. et Duby in Geneve, Mem. Soc. 

 Phys. XXI. ii. p. 436. t. iv. fig. 4 (1872). ? TaxitheUum varieya- 

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



HuiJ.L.\. — A widely cjespitose, flavescent-green moss ; fruit-stalks 

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

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

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

 plain near Humpata and Empalanca, at an 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 Isopteryrjium at the foot of 

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



2. R. concolor Gepp, sp. n. 



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

 Havescent-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-ortliostichous, imbricate, erecto-patent, from a con- 

 tracted base ovate, suddenly longly and narrowly acuminate, 

 excavate, with 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. Perichfetial bracts 8, ei-ect ; 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 towai'ds 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 A*, variegatum. Operculum convex, 

 shortly and bluntly rostrate. 



