Overview

Distribution

National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Global Range: Trans-Pecos region of Texas, Arizona, most of New Mexico, to central Mexico.

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Ariz., N.Mex., Tex.; Mexico.
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Physical Description

Morphology

Description

Plants annual, herbaceous, glabrous or sparsely glandular, not glaucous. Stems erect, simple or dichotomously branched, 3-25(-30) cm. Leaves mostly appearing whorled; stipules ± persistent, simple, filiform to subulate, 0.5-2 mm; petiole absent or nearly so; blade linear, 1-3(-3.5) cm × 0.5-1.5(-2) mm, base attenuate, apex rounded, sometimes apiculate. Inflorescences terminal or racemose, open, 3-30+-flowered cymes. Pedicels shorter to longer than subtending bracts at maturity. Flowers: sepals with midvein prominent, lateral pair often evident, then arcing outward at midsection and confluent apically, broadly ovate to ± orbiculate (herbaceous portion elliptic to oblong or lanceolate), 2-3.5 mm, subequal, apex obtuse (herbaceous portion similar), hood oblique or at right angles to apex, formed in part by scarious margins, glabrous; petals 4-fid for 2 or less their length, 1.7-2.5 mm, subequal to sepals, lobes 1-veined, vein unbranched, linear, outer pair 1/ 1/ 2 as long as petal trunk, inner pair slightly shorter or, sometimes, greatly reduced or absent, trunk laterally denticulate, base abruptly tapered, apex rounded. Seeds dark brown to purplish, horseshoe-shaped, 0.8-0.9 mm; tubercles minute, rounded.
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Diagnostic Description

Synonym

Arenaria molluginea Seringe in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 1: 400. 1824; Alsine molluginea Lagasca, Gen. Sp. Pl., 13. 1816, not Hornemann 1813; Drymaria sperguloides A. Gray
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Ecology

Habitat

Comments: In sandy soil, plains and open slopes.

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Rocky to sandy soil; 2100-2400m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering late summer-early fall.
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Reasons: Widespread, and apparently common within range.

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