familySelaginellaceae
genusSelaginella
speciesSelaginella arenicola
subspeciesSelaginella arenicola subsp. riddellii
Selaginella arenicola subsp. riddellii
Ann. Missouri Bot. Gard. 42: 24. 1955.
Common names: Riddell's spike-moss
Endemic
Basionym: Selaginella riddellii Contr. U.S. Natl. Herb. 20: 162. 1918
Treatment appears in FNA Volume 2.
Revision as of 20:22, 5 November 2020 by imported>Volume Importer
Leaves (aerial stems) usually loosely appressed; base often glabrescent. Strobili sometimes with apical vegetative growth, not distinctly larger than subtending stem. Sporophylls usually not abruptly tapering toward apex; apex straight.
Habitat: Mostly on granite outcrops, granite boulders, or gravelly or sandy soil
Elevation: 0–200 m
Distribution
Ala., Ark., Ga., La., Okla., Tex.
Discussion
The specimens of Selaginella arenicola subsp. riddellii from Texas are more constant in their morphologic characteristics and thus more easily separated from subsp. arenicola.
Selected References
None.
Lower Taxa
None.