294 MOSSES (Gepp). [/'orrdrichniii 



2. P. auintasi Brotb. in Bol. Hoc. Brot. viii. p. 181 (1890). 



St. Thc)Mas's Island. — A small quantity growing with P. lopkllokles 

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

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



3. P. elongatum. 



Ilomalia elongata Welw. et Diiby in Geneve, Mem. Soc. Phys. 

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



GoLUNGo Alto. — Living on old tree-trunks and rocks 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 

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

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

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

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

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

 1857. No. 146ft. 



Our specimens appear to belong to Aiia>^lrep]i/d'nnn, a section of 

 Porntriclnim. 



29. THAMNIUM Sehimp. in Br., Scb. et Guemb. Bry. Eur. Y. 

 (1851-55). 



1. T. variifolium. 



Ilomalia variifolia Welw. et Duby in Geneve, Mem. Soc. Pliys. 

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



PuN(;() AxDONGo. — In company with Lepidnp'dnm anr/ol ense on moist 

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

 On rocks by the Casalale rivulet within the presidium at an elevation 

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



GoLUNGo 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 Thamn'mm HUdehrandti 

 Jaeg. et Sauerb., of which Porotvlclnim j^tcrops Rehm. (Muse. Austro- 

 Afric. nos. 329 (Nerkei-a), 621 and 621/0 appears to be a synonym. 



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

 1. H. huillensis Gepp. .sp. n. 



Stei-ile. Laxly ctespitose. Plants lurid-brown below, glaucous- 

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

 branclied ; branches G 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- 

 ligulate subacute suddenly cuspidato-acuminate, with margins 

 serrulate above the middle and Km bate to the apex with a sub- 

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

 dorsally serrulate and 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 1*5 by 

 0*6 mm. lanceolate-acuminate subentire, with nerves smooth 

 evanescent about the middle of leaf, and cells longer. 



