326 BRYOPHYTA OF S. RHODESIA. 



Porotrichum comorense Hampe. — In wet forest, Inyanga, alt. 

 6,000 feet (Henkel, 2629, 2636, in herb. Eyles). Cum setis. 



General distribution : East African Islands generally, Usam- 

 bara, Belgian Congo, Fernando Po. 



Thamnium pennaeforme (Hornsch.) Kindb. — Wet forest, 

 Inyanga, alt. 6,000 feet (Henkel, 2628, in herb. Eyles) St. 



General distribution : South Africa generally, and in addition 

 that of Porotrichum comorense. I am greatly of the opinion that 

 the latter is only a form of this highly variable species. 



Entodontaceae. 



Entodon dregeanus (Hornsch.) CM. — Zimbabwe, alt. 3,000 

 feet (Sim, 8758); Umtali, rock in bush, alt. 4,200 feet (Eyles, 

 1731), and tree-trunk, alt. 4,000 feet (Eyles, 1734). 



General distribution : Cape Province, Transvaal, Natal, Zulu- 

 land, East tropical Africa, Bourbon, Belgian Congo. 



Entodon cymbifolius Wager and Dixon. — Zimbabwe, alt. 3,000 

 feet (Sim, 8786). 



General distribution : Transvaal. 



Erythrodontium sp. — Zimbabwe, alt. 3,000 feet (Sim, 8776). 

 A very small quantity of a sterile species which appears certainly 

 different from E. subjulaceum (CM.) Par., the common species 

 of Central Africa; it is more slender, glossy, closely pinnately 

 branched with short branches under 1 cm. in length; the leaves 

 when dry closely applied and julaceous, with the points scarcely 

 spreading; chlorophyllose, much softer in texture than in that 

 species, with the upper cells very narrow and small, the alar filling 

 most of the base, very numerous, thin, hyaline or pellucid. E. 

 engleri Broth, has similar leaf structure, but is far more robust. 



Track i/phyllum qastrodes (Welw. and Duby) Gepp. — Zim- 

 babwe, alt, 3,000 feet (Sim, 8756b, 8760); Khami Ruins, alt. 

 5,000 feet (Sim, 8840); Rhodes' Grave, alt. 5,000 feet (Sim, 8872b, 

 8873, 8876 p.p.). All sterile. 



General distribution : Angola, Transvaal. 



Trachyphylhim maximum Dixon sp. nov. 



Stirps pro genere robust us; caules 4 cm. ad 5 cm. longi, 

 haud, ut videtur, intricati, superne virides, inferne ochracei ; 

 sat regulariter confertiuscule jnnnati, ramis circa 0.5 cm. longis, 

 turgidiusculis siccitate gracilibus, teretibus. Folia caulina 0.8 mm. 

 ad 1 mm. longa subdeltoidea, anguste acuminata; folia ramea 

 paullo minora, suborbicularia, brevius acuminata; omnia concava, 

 marginibus planis, integris, costa brevissima, basi latiuscula, 

 saepius gemella, male notata, Cellulae superiores elongate rhom- 

 boideae, sigmoideae, dorso spiculosae, medium folium versus 

 angustiores longiores, basilares (nisi juxtacostales) sensim breviores 

 latiores, alaribus multis, pellucidis dimidiam partem fere basis 

 occvpantibus, maryinalibus saepe transverse ellipticis. 



