Selaginella bigelovii Underw.
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Authority
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
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Family
Selaginellaceae
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Scientific Name
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Description
Species Description - Stems forming clumps, radially symmetric, underground (rhizomatous) and aerial, not readily fragmenting, irregularly branched, not articulate, not flagelliform, not stoloniferous; rhizomatous and aerial stems often with one branch arrested, budlike, tips straight; aerial stems erect or occasionally ascending; rhizophores restricted to rhizomes and proximal 1/3 of aerial stems, 0.3-0.4 mm diam.; leaves of one kind (isophyllous) throughout; rhizomatous stem leaves persistent, tightly appressed, scale-like; aerial stem leaves appressed, ascending, green, linear-lanceolate to narrowly lanceolate, 2.2-3.8 x 0.3-0.4 (-0.8) mm, bases abruptly adnate, cordate to almost peltate, pubescent or sometimes glabrous, margins short-ciliate at leaf bases, denticulate distally, cilia 0.02-0.08 mm long, white to transparent or greenish, leaf apices aristate, aristae hyaline to whitish, 0.2-0.8 mm; strobili quadrangular, (0.4-)1-1.5 cm; sporophylls monomorphic; megasporangia in two ventral rows; microsporangia in two dorsal rows; megaspores lemon-yellow, reticulate or rugose to smooth (when old), 300-340 µm diam.; microspores orange.
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Discussion
Bryodesma bigelovii (Underw.) Soja´k, Preslia 64: 154. 1992. Type. U.S.A. California: Fort Smith to Ri´o Grande, Bigelow s.n. (NY!; isotypes GH, NY!).
Selaginella bigelovii is closely related to S. rupincola, but their ranges do not overlap.
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Distribution
Terrestrial or epipetric on exposed rock crevices, steep north-facing slopes, cliffs, boulders, sandstone or igneous rocks, serpentine, or gravelly soils; 200-2400 m. USA (Calif); Mexico.
California United States of America North America|