Selaginella rupestris - (image 1 of 3)
Taxonomy
Family: Selaginellaceae
Habitat
On rock or in sandy or gravelly. Can occur on acid substrates but also on limestone.
Associates
Distribution
Southern Greenland to northeast Alberta, south to northern GA and OK.
Morphology
Stems branched and with numerous rhizophores, creeping and erect branches similar; erect stems to 6 cm, with tetragonous cones 1-1.5 cm long; leaves spirally arranged, appressed, firm, subulate, ciliolate, 1.5-2 mm long, with a scabrous slender white bristle 1-1.5 mm at the apex; sporophylls 4-ranked, broader than the leaves; megaspores yellowish, 0.5 mm wide.
Notes
Spores produced June to July
Wetland indicator: UPL
A drought adapted, mat forming species.
References
Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
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Michael Hough © 2018 |