320 BRYOPHYTA OF S. RHODESIA. 



Anomobryum promontorii (CM.) Dixon. — Victoria Falls, 

 alt. 3,000 feet (Sim, 8937). 



General distribution : Cape Province, Natal, Transvaal. 



Bryum argenteum L. — I have this in more than a dozen 

 gatherings from several localities. Some of them would be refer- 

 able to B. argyrotrichum CM., and B. squarripilum CM., but 

 these appear to me to intergrade too much with one another and 

 with the type to be distinguished even as varieties. 



I refer to var australe Rehm. — a well-marked and often 

 very beautiful form— the following: Matopos, alt. 4,600 feet 

 (Eyles, 935); Rhodes' Grave, alt, 5,000 feet (Sim, 8875); Zim- 

 babwe, alt. 3,000 feet (Sim, 8787); and perhaps Sim, 8748 from 

 Zimbabwe. Sim, 8741 (Zimbabwe, alt. 3,000 feet) is a form with 

 julaceous, usually very obtuse leaves, sometimes chlorophyllose to 

 the tip, similar to one I have described from Mt. Elgon (5). 



General distribution : Cosmopolitan. 



Bryum (Doliolidium) condensation Hampe. — Victoria Falls 

 (Wager, 909); Matopos, on ground, alt, 4,600 feet (Eyles, 938). 



This species appears to be little known (it is omitted by 

 Brothems in the "Musci"), but rather distinct. I have it also 

 from Stellenbosch (Wager, 626). It forms dense tufts, the stems 

 and leaves usually reddish below, pale-green or reddish-green above; 

 the leaves closely imbricate, and when dry erect and appressed, 

 often enrolled, not very flexuose ; the capsule when ripe turgid 

 and barrel-shaped, corrugated at base as in B. coronatum, and 

 like that with no tapering neck. Without the operculum it may 

 be scarcely longer than wide. 



General distribution : Cape Province. 



Bryum rigidicuspis sp. nov. Dixon. 



Doliolidium. Caespites densi, extensi, subfaciliter dilabiles, 

 lutescenteS, 1 cm. ad 2 cm. alti. Folia conferta, apicem versus 

 paullo comata, parva, circa 1 mm. longa, late ovata, breviter 

 acuminata, acuta, con cava, marginibus plerumque revolutis, 

 integris vel subdenticulatis ; costa valida, flava, per totam longi- 

 tudinem subaequalis, foliis caulinis longe, foliis innovationum 

 brevius excurrens; apice. parum acuto, integro vel dentibus paucis 

 praedito. Areolatio breviuscula, e cellulis rhomboideis subpellu- 

 cidis, lO^t ad 15ji latis, parietibus tenuibus, composita, marginem 

 versus angustioribus linearibus, limbum male notatum instruen- 

 tibus. 



Dioicum videtur. Seta 1.5 cm. ad 2 cm. alta ; theca subpen- 

 dula, elliptico-piriformis, rubra 1.5 cm. longa, collo distincto, 

 brevissimo, in setam abrupte desinente. Operculum conicum. 

 Peristomium pallide rufescens, dentes densiuscule lamellosi, linea 

 media valde angulata, Annulus latus, a cellulis perangusfis 

 compositas. 



Habitat : Van Reenen Pass, Natal (Wager, 74) ; Zimbabwe, 

 alt, 3,000 feet (Sim, 8790); Khami Ruins, alt. 5,000 feet (Sim, 

 8839, 8867). The Rhodesian plants are sterile and rather more 

 robust than the Van Reenen fruiting plant, but the foliation quite 



