DRUMMONDIA CLAVELLATA, Hook.
Tab. 33.
Plantæ in cæspites densos latos valde depressos congestæ, saturate virides, inferne nigrescentes.
Caulis parce divisus, 1–6-uncialis et ultra, prostratus, aphyllus, tota longitudine subtus densissime radiculosus, ramos erectos breves copiosissime exserens, saepeque ultra caespitis ambitum hic illie longe prorepens.
Folia conferta, ovato-lanceolata, patentia, concava, firmula, fere ad apicem suleato-costata; reti denso punctiforrui: perichætialia oblongiora.
Flores dioici, terminales et innovatione laterales.
Capsula in ramis terminalis, ovato-globosa, microstoma, leptoderma, brevi-pedicellata; dentibus peristomialibus scdecem brevissimis truncatis; operculo e basi hemisphærico-conica oblique acieulari-rostrato; calyptra inflato-cuculliformi basi bis terve leniter plieata ad capsulæ basin producta; sporis majusculis.
Drummondia Clavelleta, Hook, in Drumra. Musc. Amer. No. 62; Müll. Synop. Musc. 1, p. 687; Sulliv. Mosses U. States, p. 32, t. 2.
Gymnostomum prorepens, Hedw. Sp. Musc. p. 35, t. 3.
Hab. Trees, Northern and Middle States: common.
TAB. 33.—Drummondia clavellata.
1. Plantæ naturali magnitudine.
2. Ramus fructifer.
3. Folia ramea.
4. Folia perichætialia.
6, 7,8. Areolatio folii.
9. Sectiones transversales folii.
10 Capsula operculata.
11. Operculum cum columellæ apice.
12, 13. Opercula et calyptra.
14. Particula peristomii cum sporis.
15. Eadem verticaliter secta.
16. Vaginula cum folio perichætiali.
17, 18. Flos masc. et perigoniale.
19. Antheridium cum paraphysi.
