Difference between revisions of "Stellaria americana"
Contr. U. S. Natl. Herb. 22: 336. 1921.
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|name=Alsine americana | |name=Alsine americana | ||
|authority=(Porter ex B. L. Robinson) Rydberg | |authority=(Porter ex B. L. Robinson) Rydberg | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Arenaria stephaniana var. americana | |name=Arenaria stephaniana var. americana | ||
|authority=(Porter ex B. L. Robinson) Shinners | |authority=(Porter ex B. L. Robinson) Shinners | ||
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|elevation=1400-2800 m | |elevation=1400-2800 m | ||
|distribution=Alta.;Mont. | |distribution=Alta.;Mont. | ||
| − | |discussion=<p>Stellaria americana is remarkable for its tortuous fruiting pedicels, which push the opening capsule with its small number of large seeds into the substrate.</p> | + | |discussion=<p><i>Stellaria americana</i> is remarkable for its tortuous fruiting pedicels, which push the opening capsule with its small number of large seeds into the substrate.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1921 | |publication year=1921 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V5/V5_205.xml |
|subfamily=Caryophyllaceae subfam. Alsinoideae | |subfamily=Caryophyllaceae subfam. Alsinoideae | ||
|genus=Stellaria | |genus=Stellaria | ||
Revision as of 17:37, 18 September 2019
Plants perennial, forming loose, prostrate mats, from rhizomatous rootstocks. Stems spreading, branched, very leafy, 4-angled, 10–20 cm, short glandular-puberulent on internodes. Leaves sessile; blade ovate to ovate-lanceolate, widest at or above middle, 8–30 × 2–13 mm, base round to cuneate, margins not scarious, apex usually obtuse, viscid. Inflorescences terminal, 1–5-flowered, very leafy cymes; bracts foliaceous. Pedicels ca. 10 mm in flower, elongating, recurved, and tortuous in fruit, glandular-pubescent, pushing capsule into substrate. Flowers 5–10 mm; sepals 5, obscurely veined, ovate-obtuse, 3–5 mm, margins narrow, scarious, glandular-pubescent; petals 5, 4–6 mm; stamens 5; styles 3, ascending, equaling petals. Capsules green to straw colored, broadly ovoid to globose, 5–6 mm, apex obtuse, tardily dehiscent with 3 valves; carpophore absent. Seeds 3–6, rusty brown, ± ovate, ca. 2.5 mm diam., finely tuberculate.
Phenology: Flowering late Jul–Aug.
Habitat: Rocky slopes, talus
Elevation: 1400-2800 m
Discussion
Stellaria americana is remarkable for its tortuous fruiting pedicels, which push the opening capsule with its small number of large seeds into the substrate.
Selected References
None.