Muscr ExorTici.—Burchelliani. 
GRIMMIA CAMPESTRIS. 
Grimmia caule erecto czespitoso ramoso, foliis undique 
erecto-patentibus late ovatis longe acuminatis incanis, 
seta exserta recta, capsula ovata, operculo brevi-ros- 
trato. (Tas. CXXIX.) 
Grimmia campestris. Burchell MSS. 
Has. In territorio coloniali Capitis Bone Spei, in regione Rog- 
geveld, inter Jakhals Fonteyn et Kuylenberg ;—terrestris, in 
campis aridis, parce. D. Burchell. 
Caules ut in Grimmia pulvinata, dense czspitoSi, erecti, versus 
apicem ramosi. Folia undique sublaxe imbricata, erecto-pa- 
tentia, nigro- -viridia, late ovata, concava, inferiora obtusa, 
superiora in pilum, folii longitudine eequale, vel in 'summitate 
duplo longius, incanum, serrulatum attenuata, nervo obscuro 
ante pili basin evanescente. Seta brevis, erecta. Capsula 
ovata, pallide fusca, ore annulato. Operculum brevi-rostra- 
tum, obtusum. Peristomium e dentibus 16, longiusculis, in- 
tense rufis, transyersim striatis, superne sepissime fissis. 
Numerous are the species (if such they may be really called) 
of Grimmia, bordering upon G. ovata and pulvinaia, differing 
from each other in the various modifications of the leaves, the 
fruitstalk, the capsule and operculum. The subject of the pre- 
sent plate is one which, in the fructification, much resembles the 
former of the species just mentioned, while it is totally different 
from it in the leaves, therein perhaps coming nearer to G. cri- 
nita. The teeth are pretty regularly cleft for nearly half the way 
down from the apex; so that those botanists who do not consult 
nature in the formation of genera, nor take the calyptra into ac- 
count as essential for their aes will make this plant a 
Dicranum. 
Fig. 1, 1, tufts of plants, nal. size. Fig. 2, single plant. 
Fig. 3, teal, Fig. 4, superior ditto. Fig. 5, capsule with its pe- 
ristome and annulus. Fig. 6, poe of the peristome, Fig. 7, 
operculum,—magn. 
