190 Transactions of the Royal Society of South Africa. 
S. ohliquirostris, with the description given by C. Mueller (stems scarcely 
clavate, leaves longer, more spirally twisted, more acute and more spiculose 
at apex) ; only the leaves do not seem to be " introrsam uncinata " when 
moist. Rehm. M. Austr.-Afr. 486, however, agrees quite well, and it is clear 
from this specimen that the above character does not refer to the general 
•direction of the leaves, but only to the inflexed apex. 
S. pomiformis (Hook.) Hampe. I have had this sent from two or three 
♦collectors at the Cape of Good Hope, but only one from any other locality, 
viz. Muizenberg Mt., near Kalk Bay, July, 1900 ; coll. C. H. Hobkirk, 
•comm. G. Webster (No. 499). 
POTTTACEAE. 
Gymnostomum Bewsii Sim MS. in sched. (PI. XI, fig. 4.) 
Autoictim; flos prope 11. ? situs. Dense coespitosum, 1-3 cm. altum, 
superne viride, inferne fuscum vel pallide ochraceum ; caules gracillimi, 
fragiles, saepe interrupte foliosi ; folia sat conferta, patentia vel paullo 
recurva, sicca crispula, parva, 1-1*5 mm. longa, e basi parum latiore 
ligulata, ohtusa vel suhacuta, saepius cellula singula hyalina apiculata ; 
concavo-carinata, marginibus planis, integris ; costa basi latiuscula, supra 
obscura, dorso plerumque valde muriculata. Cellulae basilares hyalinae, 
breviter rectangulares (circa 2x1); superiores chlorophyllosae, irregulariter 
quadratae, minute papillosae, 6-8 /x latae, marginales superne saepe seriehiis 
duabus histratosae. Seta 3-5 mm. alta, flavo-rubella ; theca parva, elliptica, 
gymnostoma, collo brevi, distincto, maturitate pallide aurantiaca, ore rubro, 
operculo tenuirostrato, obliquo ; exothecii rete collenchymaticum, e cellulis 
elongatis instructum, ad orificium seriebus circa quinque, minoribus, 
isodiametricis, parietibus crassioribus, saturate aurantiacis ; annulus hand 
•evolutus. Spori 10-13 /x, punctulati. Hymenium ntdlum. 
Hah. — East Griqualand, Mar., 1915 ; coll. Bro. Mayol, comm. Sim (No. 
8251) ; Tugela Gorge, 6000 ft.. Natal, Sept., 1915; coll. Prof. Bews, comm. 
Sim (No. 8660) ; on face of rock, Goodoo Pass, Drakensberg, Natal, alt. 
7000 ft., 1915 ; coll. Prof. Bews, comm. Sim (No. 8713) ; Upper Bushman's 
River, Natal, alt. 7000 ft., Sept., 1905 ; coll. Sim (No. 8658) ; Giant's Castle, 
Natal, alt. 7000 ft., 1915 ; coll. R. E. Symons, comm. Sim (No. 8661) ; Eydal 
Mt., coll. H. A. W. (No. 97) ; Van Reenen Pass, Natal, coll. H. A. W. (No. 7). 
Evidently a frequent plant, and somewhat variable, but not difficult 
to recognise from the yellowish, gymnostomous capsules, the narrow, 
plane-margined leaves, carinate with the somewhat prominent nerve, which 
is usually, but not always muriculate at back, and the bistratose marginal 
cells. 
Its generic position is not quite certain. The bistratose cells are 
almost unique among these small gymnostomous Trichostomoid mosses ; 
