BRYOPHYTA OF S. RHODESIA. 309 



magnae, brevissime rectangulares, subqudratae, seriebus superne 

 perdistincte, nee alte scalaribus. Cellulae marginales basilares 

 inter teniolam marginemque 4 ad 7 seriatae, quadratae, chlorophyl- 

 losae, limbuni infra sensim attenuatam instruentes, ad basin 1 

 ad 2 seriatutn, e cellulis breviter rectangularibus hyalinis instruc- 

 tum ; margine basilari ubique teneriter denticulato. Teniola 

 bene notata, ubique fere biseriata (aliquando tri-seriata) supra 

 basin evanescens, raro ad medium folium attingens. Cellulae 

 superiores rotundae vel hexagonae, minutae, 3/a ad 5/x latae, 

 chlorophyllosae, distinct ae, dorso papillosae. Fructus ignotus. 



Habitat: Victoria Falls, alt. 3,000 feet (Sim, 8879). 



A rather commonplace little plant, but apparently distinct 

 from anything yet described, C. tentellum CM. and C. brachy- 

 pelma CM. are taller, with longer and narrower, involute leaves, 

 indistinct teniole, and cells mamillose at back but not papillose. 

 C. orthophyllaceum CM. is more robust, with more coarselv 

 serrate leaves and involute margins. 



It marks the southern limit of the distribution of Calymperes 

 in continental Africa. 



POTTIACEAE. 



Hymenostomum- ffocotranum Mitt. — Odzani R. Valley,, 

 Manica, Umtali Prov. (A. J. Teague, 167); Lomagundi, Darwin- 

 dale, in picrite formation, alt. 4,500 feet (Eyles., 697); Matopos, 

 alt, 5,000 feet (Eyles, 1049, 1051). All c.fr. 



Agrees quite well with Mitten's plant, which, however, is 

 extremely close to //. tortile. 



General distribution : Socotra. 



Hymenostomum hurnicola (CM. Par. — Rua R., near Salis- 

 bury, alt, 5,000 feet, on stem of Vellozia (Eyles, 1345) ; on earth 

 between rock and tree, Salisbury, alt. 4,900 feet (Eyles, 684b, 

 Herb. Mus. Brit.); Zimbabwe, alt. 3,000 feet (Sim, 8813); 

 Matopos (Wager, 892, 915); Rhodes' Grave, Matopos, alt, 5,000 

 feet (Sim, 8863; Wager, 890). All c.fr. The rather large, clear 

 cells separate this species markedly from most of its congeners. 



General distribution: Cape Province. 



Hymenostomum eurybasis sp. nov. Dixon. (For description 

 v. infra). — On earth, Matopos, Mchelele Valley, alt, 4,700 feet 

 (Eyles, 940, 941). 



General distribution: Portuguese Gaza Land (V. infra). 



Gyroiveisia latifolia sp. nov. Dixon. 



Humilis, dense caespitosa, sordide viridis, infra pallescens. 

 Caulis circa 5 mm. altus, filiformis. Folia laxiuscula, erecto- 

 patentia, sicca vix mutata, minima, 0.3 mm. ad 0.4 mm. longa, 

 latissime oblongo-liugulata, vel suborbicularia, apice valde obtuse, 

 rotundato, concava, utroque latere prope marginem leniter sulcata,, 

 marginibus ipsis recurvatis-, integris. Costa valida, lata supra 

 parum angustata, sub summo apicem evanescens, dorso plus 

 minusve, saepe alte, scaberulo. 



