HYPNUM CIRCINALE.
Hypnum caule repente dense pinnatim ramoso, foliis
lanceolato-snbulatis subserratis secundis circinalibus
enervibus, seta breviuscula, capsula ovata cernua, operculo
conico. (Tab. CVII.)
Ha b . Arboribus in plaga occidentali Americæ meridionalis.
Z). Menzies, 1793.
Pianta valde polymorpha. CauUs repens, bi-triuncialis ad palmarem,
flexuosus, ramosus, ramis numerosis alternis horizon-
taliter pinnatis, nunc brevibus vix semiuncialibus, mine biun-
cialibus, flexuosis. Folia lutescente-viridia, basi aurantia, secunda,
lanceolata, longe-subulata, inferne concava, superne
plana, apice subserrata, omnino enervia. Perichætialia
erecta, magis serrata. Seta vix unciam longa, erecta, flexuosa,
rufo-fusca. Capsula ovata, cernua, intense fusca. Peristomium
flavum.
Among our British species of Hypna this approaches the
nearest toH . cnpressiforme; but in none of the numerous varieties
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,
Muse. t. 77, has much resemblance in the ramification and foliage,
but then the capsule is quite erect, and the lid pointed.
Fig. 1 and 2, plants, nat. size. Fig. 3, portion of a branch.
Fig. 4, leaf. Fig. 5, perichaetium, fruitstalk, and capsule. Fig. 6,
perichaetial leaf. Fig. 7, teeth of outer peristome. Fig. 8, portion
of inner peristome.—magn.
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