Thuidiuni] mosses (Gepp). 297 



in Barranco do Pungo ; with immature fr. May 1857. No. 103. Laxly 

 caespitose, growing on the shaded wet rocks of Barranco de S. Antonio ; 

 with capsules very few, young and complete with opercula ; May 1857. 

 No. 103i. A meagre moss with longly excurrent branches, mixed with 

 other mosses (especially Stereophijllum andongense No. 95) at the foot 

 of old trunks near Condo, not far from the great cataract of the river 

 Cuanza ; with a solitary fr. March 1857. No. 104. 



GoLUNGO AlT(1. — A caespitose moss, common on the rocks of the 

 Capopa rivulet, but seldom producing fr. ; with fr. Dec. 1855. Also 

 Cascata de Capopa ; with young fr. May 185G. No. 173. Terrestrial, 

 Zengas do Queta ; with fr. and young flowers 9 Nov. 1855. No. nSb- 

 On muddy ground on the banks of rivulets ; with fr. July 1857. No. 

 173c. On the hill-slopes of Sobato de Quilombo towards the river 

 Zenza ; with fr. Feb. 1855. No. 209. 



The inner perichcEtial leaves of all the above specimens bear a few 

 long articulated ciliary filaments on each margin above the middle. 



2. T. angolense Welw. et Duby in Geneve, Mem. See. Phys. 

 XXI. ii. p. 441. t. V. fig. 4 (1872). 



HuiLj.A. — On the bark of living trees in the forests of Monino, but 

 rather rare ; with scanty fr. beginning of Dec. 1859. No. 23. Rather 

 rare (so at least it appeared to Welwitsch, who was pressed for time 

 when he traversed the locality) at the foot of old trunks and upon 

 almost lifeless trunks in the more open forests near the great lake of 

 Ivantfila ; with scanty fr. end of Feb. 1860. No. 46. 



3. T. involvens Mitt, in Journ. Linn. See. xii. p. 575 (1869). 

 Leskea involvens Hedw. Muse. Frond, iv. p. 27. t. xi. (1797). 

 GoLUXGO Alto. — A dull-green creeping moss, bearing capsules and 



calyptras and occurring abundantly on trees of Pt(couri((. by the banks 

 of the river Coango ; with fr. June 1856. No. 174. 



Duby discusses this plant in a note under T. tenuUsuinun, Welw. et 

 Duby in Geneve, Mem. Soc. Phys. XXI. ii. p. 442 (1872). Our 

 specimens have only very young fruit. 



4. T. tenuissiraum Welw. et Duby in Geneve, Mem. Soc. Phys. 

 XXI. ii. p. 442. t. V. fig. 2 (1872). 



PuNGu Andongo. — On moist ground by the side of rivulets in 

 Barranco grande de Catete ; with fr. middle of May 1857. No. 51. 



GoLUNGO Alto. — On the banks of the Cuango river; without fr. 

 Feb. 1856. No. 204. 



This species is perhaps identical with T. jierbijaxaceuiu C. Muell. ex 

 Broth, in Engl. Bot. Jahrb. XXIV. ii. p. 28:^ (1897). The difference 

 of the latter lies in the inclination of the theca and in the number 

 of its cilia, as described. 



5. T. gratum Jaeg. et Sauerb. Gen. et Sp. Muse. ii. p. 322 (1878). 

 Hi/pnwn gratum Pal.-Beauv. Prodrome, p. 64 (1805). 

 Goi.uxGO Alto. — On the older trunks in the elevated primitive 



woods of Serra de Alta Queta, at an elevation of 2200 ft. above sea 

 level ; with fr. Jan. 1856. No. 143. On shaded rocks by the side of 

 the Capopa river ; very seldom producing fr. ; with fr. beginning of 

 Jan. 1856' No. 151. On the spiny trunks of Pacobolo (Zatifhoxi/luin 

 niacroiilnjUum Oliv., Herb. Welw. No. 456«) in Mata Quisucula, sparingly 

 and with fr. scarcely mature ; Feb. 1855. No. 162. On the wet rocks 

 of Capopa ; without fr. Sept. 1855. No. 162^. 



