196 
Transactio7is of the Royal Society of South Africa. 
G. cucullatifolium (C. M.) Broth. In cushions on rocks, 6-9000 ft., 
Wittebergen, Herschel, CP., 1917; coll. Ivan Hepburn, comm. Sim 
(No. 8708), c. fr. The very short seta and short small capsule are marked 
features of this species. 
G. depresstim (C. M.) Broth. Hogsback, Tjumie, CP., 1907; coll. 
D. Hend. (No. 324), c. fr. The fruiting characters are in the main the 
same as those of the last species ; the calyptra is, however, much more longly 
beaked, as is also the capsule lid. The reflexed margin is also characteristic 
— an unusual feature in the genus. 
Glyphomitrium marginatum Wager & Dixon, sp. nov. (PI. XII, fig. 23.) 
E rohustiorihus. Caules ad 4 cm. alti, adscendeutes, dense foliosi,coespites 
elatos nigro-virides efiicientes. Folia erecto-patentia, e basi hrevi parum 
latiore lingulato-lanceolata, breviter acuminata, subacuta, ob margines ad 
apicem conniventes subcucullata, concavo-carinata,marginibus|;^^ams, integer- 
rimis ; costa sat valida, per totum fere folium subaequalis ; cellulae maj'iis- 
culae, p)elhicidae, perdistinctae, laeves, pulchre seriatae, apicem versus saepius 
hie illic histratosae, marginales per partem folii majorem 2-3-seriehup, pluri 
stratosae, limhum saturatius viridem formantes. Cellulae basilares ijaullo 
elongatae, breviter rectangulares, parietibus firmis, subincrassatis ; infimae 
tantum laxiores, rectangulares, pellucidae. Seta '75-1 cm. alta ; theca 
august a, cylindracea, collo distincto praedita, sicca leniter plicata. Peri- 
stomium (imperfectum) rubrum breve ? Calyptra, operculum, hand visa. 
m^.— Kaapsche Hoop, 6000 ft., Transvaal, 1915 ; coll. H. A. W. (No. 
298). Hogsback, Tjumie, 4-6000 ft., CP., 1916 ; coll. J. H. (No. 190), c. fr. ; 
and again, coll. D. Hend. (No. 352b). 
This differs from G. crispatum at once in the narrowly cylindrical capsule, 
at least when dry and empty ; the more robust habit and somewhat longer 
seta. G. crassinervium (Schimp.), which I have not been able to see, differs, 
e descr., in the nerve, very wide at base and gradually tapering upwards ; 
in the wide leaf-base with lax cells ; the seta also is described as short, while 
it is here rather unusually long ; and there is no suggestion in that of a 
bistratose marc?in. 
Since the above description was drawn up, a new species of Glyphomitrium 
(or Ptychomitrium), collected by Prof. Wager in South Africa, has been 
descril^ed by Capt. Potier de la Yarde, under the name of P. suhcrispatum 
Thcr. & Potier de la Varde ('Rev. Cencrale de Botanique,' xxx, 65), which 
I at first suspected would prove to be identical with the present plant, 
especially as one of the prominent features in P. suhcrispatum is the 
thickening of the margin of the leaf as in this. Comparison of the two 
plants, however, revealed certain differences, and Capt. P. de la Yarde agrees 
with me that the two must be kept separate. P. suhcrispatum differs in the 
laxer foliage, shorter seta and smaller capsule ; in P. suhcrisp)atum the 
capsules are very frequently two in the same perichaetium, while here they 
