BOTANY. 
359 
that group of the Campylopodes in which the nerve is very wide, hut 
soft and somewhat spongy in substance, and rarely accompanied by 
distinct alar cells, the fruit being equal -sided, and the calyptra some- 
times without the fringe at its base. Species similar to the present 
are found wherever the genus is represented. 
913. fC. vesticaulis, sp. nov. — Compacte cjespitosus, caulis 
elatusparum divisus fere ad apicem usque radicellis rubiginosis obtec- 
tus. Folia erecto-patentia, sicca appressa apicalia in gemmam acutam 
imbricata, lanceolata canaliculata sensim subulato-angustata, margi- 
nibus conniventibus apice serrulatis, nervo tenui interne folii lati- 
tudinis | occupante, fere ad apicem a pagina distincto, lamina cellulis 
oblongis, inferioribus pellucidis, alaribus propriis nullis, sensim in 
minutis transeuntibus areolata, perichsetialia a basi latiora oblonga 
convoluta, nervo angusto piliformi attenuato. Theca in pedunculo 
brevi curvato ovalis leptoderma scqualis, sicca valde contracta sub- 
cylindracea plicata, interdum subarcuata, calyptra basi paucifimbriata. 
— Ilab. Tristan d’Acunha, Milne and M/Cfillivray. Stems from one 
to four inches high, below thickly covered with ferruginous root- 
lets, above at the growing points, the foliage is pale yellowish- 
brown. 
Ceratodon, Bridel. 
914. *C. purpureus, Linn. (Mnium). — From damp roadside 
banks on high land, Burchell, Melliss. All the specimens barren.— 
Tristan d’Acunha, M'Gillivray, with perfect fruit. 
Glypliomitrium, Bridel. i. p. 367. 
915 *G. Helenicum, sp. nov. — Pulvinatum liumile. Folia erecto 
patentia stricta sublanceolata apice acuta cucullata integerrima, nervo 
crassiusculo percurrente carinata, cellulis superioribus obscuris 
basalibus pallidis teneris angustis areolata, perichsetialia parum 
longiora basi pellucidiora. Theca in pedunculo pallido ovalis, opeiculo 
subulato. — Oapt,. Haughton. 
Very poor and incomplete specimens have only been seen of this 
species, without calyptra or peristome. It is smaller than G. cuculla- 
iifolium, found in S. Africa, and with narrower, less cucullate 
leaves. One or two stems of some Grimmia occurred amongst the 
specimens of this moss, but quite insufficient to give any idea of 
what species they may represent. 
