Name: Timmia megapolitana
Family: Timmiaceae
Collection Date:- 10-12-2011
Habitat: In the woods grows on soil
Location: Field Station
Description: Medium sized green plants, grow on soil
Collector: Getachew Hatsey
Key Used: Conard, H.S. and P.L. Redfearn, Jr. 1979. How to Know the Mosses and Liverworts 2nd Edition, McGraw-Hill, Boston, Mass.
1a. Plants with stems and leaves; leaves equally spaced around the stem or, if in two opposite rows, leaf cells enlongate or isodiametric and rhizoids multicellular; sporophyte persisting for weeks or months with no elaters present in the capsule. Class III MUSCL…2
2b. Plants not as above….3
3b. Plants not as above…(p.28) Subclass 3 Bryidae
Bryidae
1b. Green, brown, yellow, or blackish plant; if empty cells occur, they are not in two or three layers or they occur at the base, apex, or margin of leaf…..3
3b. Leaves inserted in three or more rows though plants sometimes strongly flatten thus appearing into rows….7
7b. Plants with peristome of more than four teeth or the peristome absent; gemmae when present at the tips of sterile stems not arrange in a cup…8
8b. Leaves well developed and persistant…9
9b. Capsule and leaves not as above….10
10b. Plants with or without a distinct stem; capsule when present with an operculum or regularly dehiscing near middle; may or may not be a ephemeral…17
17b. Plants minute to large; capsule immersed to exerted; if plants minute with immersed capsule, growing on rocks, trees or soil and not ephemeral…20
20b. Leaves without such out-growths; sometimes with deciduous gemmae….28
28b. Plants not having the above combinations of characters; peristome when present single or double, composed of teeth formed by strips of cell wall split apart through the cell cavity; growing on various substrates but not restricted to reach organic soil, bones, or other organic matter….33
33a. Stems erect, unbranched, or with branches erect, generally in tufts; archegonia and sporophytes terminal….34
34b. Leaves, especially the bases, not as above….36
36a. Leaf cells conspicuously bulging or bulging mammillose, at least on the upper side, or papillose with papillae not, or scarcely including the cell cavity, or roughened by fine longitudinal ridges…37
37a. Leaf cells conspicuously bulging mammillose, at least on upper surface…38
38a. Leaf cells mammillose on upper side; smooth or slightly papillose on lower side….39
39b. Leaf cells mainly in one layer….40
40a. Leaves broadly lanceolate from a broader base; calyptra often adhering to the tips of seta after falling from the mature capsule…..(p. 139) Timmia
Timmia
1a. Leaf sheath hyaline or yellow when old….2
2b. Leaf cells 6-9µ in diameter, rarely larger, the walls thin…..Timmia megapolitana
Timmia megapolitana
"Mainly in western North America."
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