Musci Exorici.—WMenziesiani. 
HYPNUM CIRCINALE. 
Hypnum caule repente dense pinnatim ramoso, foliis 
lanceolato-subulatis subserratis secundis cireinalibus 
enervibus, seta breviuscula, capsula ovata cernua, oper- 
culo conico.” (Tas. CVII.) 
Haz. Arboribus in plaga occidentali Americe meridionalis. 
D. Menzies, 1793. 
Planta valde polymorpha. Caulis repens, bi-triuncialis ad pal- 
marem, flexuosus, ramosus, ramis numerosis alternis horizon- 
taliter pinnatis, nunc brevibus vix semiuncialibus, nunc biun- 
cialibus, flexuosis. Folia lutescente-viridia, basi aurantia, se- 
cunda, lanceolata, longe-subulata, inferne concava, superne 
plana, apice subserrata, omnino enervia. Perichetialia 
erecta, magis serrata. Seta vix unciam longa, erecta, flexuosa, 
rufo-fusca. Capsula ovata, cernua, intense fusca, Peristo- 
mium flavum. 
enti 
Among our British species of Hypna this approaches the 
nearest to H. cupressiforme; but in none of the numerous varie- 
ties of this plant are the leaves nearly so much incurved as in the 
present plant, nor is the capsule drooping or of the same figure, 
The H. imponens, judging from the figure in Hedwig’s Sp, 
Musc. t. 77, has much resemblance in the ramification and fo- 
liage, but then the capsule is quite erect, and the lid pointed, 
Fig. | and 2, plants, zat. size. Fig. 3, portion of a branch. 
Fig. 4, leaf. Fig.5, perichetium, fruitstalk, and capsule. Fig.6, 
perichetial leaf. Fig. 7, teeth of outer peristome. Fig. 8, por- 
tion of inner peristome.—magn, 
