294 MOSSES (Gepp). [J'm-otrichvm 



2. P. auintasi Broth, in Bol. Soc. Brot. viii. p. 181 (1890). 



St. Thomas's Island. — A small quantity growing with P. lopldioides 

 on bark at the foot of trunks in dense woods at an elevation of 

 2500 ft. at Novo Destino ; without fr. Dec. 1860. No. 124, in part. 



3. P. elong'atum. 



Homalia elongata Welw. et Duby in Geneve, Mem. Soc. Phys. 

 XXI. ii. p. 429. t. ii. fig. 3 (1872). 



G-OLUNGO Alto. — Living on old tree-trunks and rooks in the vicinity 

 in the primitive woods of Quisucula near Bango ; without fr. Feb. 1855. 

 No. 146. In company with other mosses, especially with tufts of 

 Racopilum, on rather young trunks in the woods of Catombe, Serra de 

 Alto Queta ; without fr. June 1857. No. 167- With Thiiidium gratum 

 on the older trunks in the elevated primitive woods of Serra de Alto 

 Queta, at an elevation of 2200 ft. ; without fr. Jan. 1856. No. 143, in 

 part. On dead branches near Zengas do Queta (Sange) ; with fr. July 

 1857. No. 146i. 



Our specimens appear to belong to Auaxtfephidium, a section of 

 Povntriclnim. 



29. THAMNIUM Sohimp. in Br., Sch. et Guemb. Bry. Eur. V. 

 (1851-55). 



1. T. variifolium. 



Somalia variifoUa Welw. et Duby in Geneve, Mem. Soc. Phys 

 XXI. ii. p. 429. t. iv. fig. 5 (1872). 



PUNGO Andongo. — In company with Lepklnpilum angolense on moist 

 rocks by rivulets in Mata de Pungo ; without fr. May 1857. No. 88. 

 On rocks by the Casalal^ rivulet within the prsesidium at an elevation 

 of 3200 ft. ; without fr. Feb. 1857. No. 89. Also Alga No. 141. 



GoLUNOO Alto.— Of a very fine green colour, sometimes without 

 flagellse, sometimes exceedingly flagelliferous ; on old trunks and on 

 the ground (humus) in the shadiest parts of the primitive woods of 

 Mata de Quisucula at an elevation of 2400 ft. ; without fr. Jan. July 

 and Sept. 1855, Feb. 1856. No. 159. 



Our specimens are very closely allied to Thamniwn Hildebmndti 

 Jaeg. et Sauerb., of which Porotnclmm pterops Rehm. (Muse. Austro- 

 Afric. nos. 329 {Nechera), 621 and 621i) appears to be a synonym. 



30. HOOKERIA Smith in Trans. Linn. Soc. ix. p. 275 (1808). 

 1. H. huillensis Gepp. sp. n. 



Sterile. Laxly casspitose. Plants lurid-brown below, glaucous- 

 green above, yellowish at apex. Stems 3 cm. long, vaguely 

 branched; branches 6 to 8 mm. long, and with the foliage 3-5 to 

 4 mm. wide; leaves variously curved, unaltered when dry, easily 

 moistened; lateral leaves 2 mm. long, 0-75 mm. wide, ovato 

 hgulate subacute suddenly cuspidato-acuminate, with margins 

 serrulate above the middle and limbate to the apex with a sub- 

 lutescent biseriate limb, with nerves f- the length of the leaf 

 £'&'.' ^'•'''''^ prominent at their apices, with upper cells' 

 lax 0-045 mm. diam. rotundato-hexagonal and pseudo-incrassate 

 with chlorophyll and lower cells oblong; median leaves iTby 

 6 mm. lanceolate-acuminate subentire, with nerves smooth 

 evanescent about the middle of leaf, and cells longer 



