Selaginella rupestris (L.) Spring
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Selaginellaceae
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Scientific Name
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Description
Species Description - Stems much branched and with numerous rhizophores, 1 mm thick (excl. lvs), the creeping and the erect (to 6 cm) branches similar except that the latter terminate in tetragonous cones 1–1.5 cm × 1 mm; lvs spirally arranged, appressed, thick and firm, subulate, ciliolate, 1.5–2 × 0.25–4 mm, tipped by a scabrous slender white bristle 1–1.5 mm; sporophylls 4-ranked, evidently broader than the lvs; megaspores yellowish, 0.5 mm wide, faintly reticulate or rugose on all faces, often only 1 or 2 per sporangium, and the plants then usually apogamous and lacking microsporangia; 2n=18. Rocky or sandy, mostly acid soil; s. Greenl. to ne. Alta., s. to n. Ga. and Okla.
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Common Names
rock-spikemoss