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Leiomylia anomala
This is the largest and most common species of liverwort in peatlands. In the field the conspicuous yellow gemmae, relatively large plants, and succubous entire leaves are characteristic. Other liverworts in peatlands have incubous leaves or leaves that are bilobed. Leiomylia is endomycorrhizal. The thalloid hepatic, Marchantia polymorpha occasionally occurs in peatlands in moist disturbed areas in fens, especially after fire. Formerly known as Mylia anomala.
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| Habit | Plants prostrate with ascending stem tips, mostly unbranched (to 1-2 times branched), medium-sized. |
| Stems | rather turgid, with sporadic hyaline rhizoids. |
| Leaves | succubous, circular to oblong-ovate, rounded, usually with very conspicuous yellow gemmae produced at the upper margins, concave, costa none. |
| Leaf Cells | rounded to stellate due to thickened corners (trigones), similar throughout. |
| Alar Cells | None. |
| Habitat | Growing intermixed and sometimes covering Sphagnum fuscum, rarely intermixed with other Sphagna. |
| Common Associates | Sometimes with the mosses Polytrichum strictum and Pohlia nutans. Also occurring with less common leafy hepatics on Sphagnum hummocks, including species of Calypogeia (incubous leaves) Cephalozia (bifid leaves on tiny plants), and Lophozia (sensu lato; large plants with bifid leaves). |
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