Drymaria pachyphylla Wooton & Standl.:
Mexico (Mesoamerica)
United States (North America)

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Global Range: Trans-Pecos region of Texas, 4 counties of southern New Mexico, southeastern Arizona, northern Mexico.

Drymaria pachyphylla is highly toxic to livestock.

Plants annual, succulent, glab-rous, glaucous. Stems nearly prostrate, radiating pseudo-verticillately from base, 10-20 cm. Leaves appearing whorled; not stipulate; petiole 2-8 mm; blade ovate to suborbiculate, (0.2-)0.5-1.3 cm × 4-10 mm, base obtuse to rounded, apex ± obtuse. Inflores axillary, congested, 3-12-flowered umbelliform clusters. Pedicels shorter to longer than subtending bracts at maturity. Flowers: sepals with 3 or 5 obscure veins usually not confluent apically, oblong to broadly elliptic (herbaceous portion similar), 2-3.5 mm, subequal, apex obtuse (herbaceous portion generally acute), not hooded, glabrous; petals 4-fid for 2 or less their length, 2.5-3 mm, 2/ 3-1 times as long as sepals, lobes 1-veined, vein unbranched, linear, outer pair 1/ 2 length of petal, each with narrower, slightly shorter lobe on inner flank, trunk laterally denticulate, base abruptly tapered, apex ± rounded. Seeds olive green to black, teardrop-shaped (with elongate or crescent-shaped lateral thickening), 1.1-1.3 mm; tubercles marginal, minute, elongate.

Holotype for Drymaria pachyphylla Wooton & Standl.
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): E. O. Wooton
Year Collected: 1897
Locality: South of White Sands., Dona Ana, New Mexico, United States, North America

Isotype for Drymaria pachyphylla Wooton & Standl.
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): E. O. Wooton
Year Collected: 1897
Locality: South of White Sands., Dona Ana, New Mexico, United States, North America
Elevation (m): 1250

Comments: On sand-gravel babrs in silty areas along streams, often as a pioneer in bare areas (Correll and Johnston, 1970).

Flowering spring-late summer. Heavy, saline soils, desert flats, river bottoms, playa margins; 1200-1500 m; Ariz., N.Mex., Tex.; Mexico (Chihuahua, Coahuila, Durango, Nuevo León).

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G5 - Secure

Reasons: Widespread and apparently common. No EO or state rank data to confirm this.