Difference between revisions of "Selaginella standleyi"
Smithsonian Misc. Collect. 72: 9. 1920.
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|name=Selaginella densa var. standleyi | |name=Selaginella densa var. standleyi | ||
|authority=(Maxon) R. M. Tryon | |authority=(Maxon) R. M. Tryon | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Selaginellaceae;Selaginella;Selaginella subg. Tetragonostachys;Selaginella standleyi | |hierarchy=Selaginellaceae;Selaginella;Selaginella subg. Tetragonostachys;Selaginella standleyi | ||
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|elevation=2000–3700 m | |elevation=2000–3700 m | ||
|distribution=Alta.;B.C.;Alaska;Colo.;Mont.;Wyo. | |distribution=Alta.;B.C.;Alaska;Colo.;Mont.;Wyo. | ||
| − | |discussion=<p>R. M. Tryon (1955) reported an elevation range of 1500–4660 m for Selaginella standleyi. I have not seen specimens from these lower and higher elevations.</p><!-- | + | |discussion=<p>R. M. Tryon (1955) reported an elevation range of 1500–4660 m for <i>Selaginella standleyi</i>. I have not seen specimens from these lower and higher elevations.</p><!-- |
| − | --><p>Selaginella standleyi is a member of the S. densa complex. It has sometimes been confused with S. watsonii and S. sibirica; it is, however, rather easy to distinguish by leaf and strobilus characters.</p> | + | --><p><i>Selaginella standleyi</i> is a member of the <i>S. densa</i> complex. It has sometimes been confused with <i>S. watsonii</i> and <i>S. sibirica</i>; it is, however, rather easy to distinguish by leaf and strobilus characters.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Selaginella standleyi | name=Selaginella standleyi | ||
| − | |||
|authority=Maxon | |authority=Maxon | ||
|rank=species | |rank=species | ||
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|publication year=1920 | |publication year=1920 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_461.xml |
|genus=Selaginella | |genus=Selaginella | ||
|subgenus=Selaginella subg. Tetragonostachys | |subgenus=Selaginella subg. Tetragonostachys | ||
Latest revision as of 20:23, 5 November 2020
Plants terrestrial or on rock, forming cushionlike or rather short, loose mats. Stems decumbent to short-creeping, not readily fragmenting, irregularly forked, without budlike arrested branches, tips straight; main stem upperside and underside structurally slightly different, inconspicuously indeterminate, lateral branches radially symmetric, determinate, strongly ascending, 1-forked. Rhizophores borne on upperside of stems throughout stem length, 0.2–0.35 mm diam. Leaves monomorphic, in poorly defined pseudowhorls of 5 or 6, tightly appressed, ascending, green, linear, linear-oblong or linear-lanceolate, (2.5–)3–4.5 mm (smaller on upperside leaves and in ascending buds); abaxial ridges present; base decurrent, oblique, glabrous or rarely pubescent; margins short-ciliate to denticulate, cilia transparent, scattered, spreading to ascending, 0.05–0.07(–0.1) mm; apex keeled, obtuse, rather abruptly bristled; bristle usually yellowish or transparent to opaque, slightly puberulent or smooth, (0.4–)0.7–1.25 mm. Strobili solitary, 0.5–1(–2.3) cm; sporophylls deltate-ovate, rarely ovate-lanceolate, abaxial ridges well defined, base glabrous, margins short-ciliate to denticulate on distal 3/4, apex keeled, strongly truncate in profile, abruptly bristled.
Habitat: Rock crevices, granitic outcrops, gravelly soil, bare soil, or alpine meadows
Elevation: 2000–3700 m
Distribution
Alta., B.C., Alaska, Colo., Mont., Wyo.
Discussion
R. M. Tryon (1955) reported an elevation range of 1500–4660 m for Selaginella standleyi. I have not seen specimens from these lower and higher elevations.
Selaginella standleyi is a member of the S. densa complex. It has sometimes been confused with S. watsonii and S. sibirica; it is, however, rather easy to distinguish by leaf and strobilus characters.
Selected References
None.