Difference between revisions of "Arenaria livermorensis"
Brittonia 18: 308. 1967.
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|common_names=Livermore sandwort | |common_names=Livermore sandwort | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=C | ||
| + | |label=Conservation concern | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms= | |synonyms= | ||
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|publication title=Brittonia | |publication title=Brittonia | ||
|publication year=1967 | |publication year=1967 | ||
| − | |special status= | + | |special status=Endemic;Conservation concern |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_106.xml |
|subfamily=Caryophyllaceae subfam. Alsinoideae | |subfamily=Caryophyllaceae subfam. Alsinoideae | ||
|genus=Arenaria | |genus=Arenaria | ||
Latest revision as of 22:07, 5 November 2020
Plants perennial, matted, moss-like. Taproots filiform. Stems 15–25, decumbent, trailing, green, 1–4 cm; internodes angular to grooved, 1–11/2 times as long as leaves, minute, shiny, pubescence of widely spreading to slightly retrorse hairs in 2 lines. Leaves connate basally, with herbaceous sheath 0.1–0.2 mm, sessile; blade 1-veined, vein prominent abaxially, linear, 4–6 × 1 mm, herbaceous, rigid, margins thickened, herbaceous, shiny, lined with peglike cilia, apex acute, pungent-tipped, not pustulate, glabrous; axillary leaf clusters present. Inflorescences solitary flowers in distal leaf axils. Pedicels erect or ascending in fruit, 6–10 mm, minutely pubescent. Flowers: sepals green, 1-veined, slightly keeled proximally, broadly lanceolate (herbaceous portion narrowly lanceolate), 3–4 mm, not enlarging in fruit, apex acute to acuminate, not pustulate, glabrous; petals absent; stamens ca. 8. Capsules very loosely enclosed by calyx, ovoid, 2–3 mm, 2/3–4/5 times as long as sepals. Seeds 5–7, dark brown to black, subglobose, slightly compressed, ca. 1 mm, shiny, smooth.
Phenology: Flowering spring–summer.
Habitat: Crevices of cliffs and bare walls
Elevation: 2100-2500 m
Discussion
Of conservation concern.
Arenaria livermorensis is known only from the Davis Mountains in the Trans-Pecos region of western Texas. It may be related to A. lycopodioides Willdenow ex Schlechtendal, a species found in the mountains of central Mexico.
Selected References
None.