Difference between revisions of "Mimosa rupertiana"
Phytologia 77: 81. 1995.
imported>Volume Importer |
imported>Volume Importer |
(No difference)
| |
Latest revision as of 18:54, 12 March 2025
Subshrubs, prostrate, 0.5–1 m, armed or unarmed. Stems ribbed, glabrous or puberulent; prickles along ribs, recurved. Leaves: stipules lanceolate, 2–3 mm, glabrous; petiole 1–4 cm; primary rachis 4–10 cm; pinnae 4–9 pairs; leaflets (10–)13 or 14 pairs, blades obliquely linear-oblong to oblong, 2.5–6 × 1–1.5 mm, margins ciliate, 1 eccentric vein evident abaxially, apex acute, mucronulate, surfaces glaucous, glabrous. Peduncles 1.5–5 cm. Inflorescences 30–60-flowered, axillary, globose capitula, solitary or fascicles of 2, 12–18 mm diam.; bracts spatulate, 1/4–1/3 corolla length. Pedicels 0.3–0.5 mm. Flowers bisexual and staminate; calyx campanulate, lobes 5, 1/6–1/5 corolla length; corolla pinkish purple, glabrous, lobes 5, 1/3–1/2 corolla length; stamens 10, filaments distinct to bases, purple; ovary stipitate, glabrous; style attenuate at apex; stigma tubular. Legumes stipitate, straight, linear, 50–110(–140) × 3–5 mm, not constricted between seeds, valves entire, 2–2.5 mm wide, prickly, margin 2–4 mm wide, prickly, apex rostrate, rostrum 5–10 mm, faces puberulent or glabrous; stipe 2–5 mm. Seeds (4–)7–12(–18), reddish brown, oblong, 4–9 × 3–5 × 1.5–3 mm, testa porous, fissural line 90%.
Phenology: Flowering May–Jul; fruiting May–Aug.
Habitat: Sandhills, dunes, sandy desert over low limestone hills, eroded pasture on calcareous clay loam, mesquite-Yucca communities, shinnery oak dunes.
Elevation: 500–1400 m.
Distribution
Colo., N.Mex., Okla., Tex., Mexico (Chihuahua).
Discussion
Mimosa rupertiana is frequent in Bernalillo, Chaves, Curry, De Baca, Eddy, Grant, Harding, Hidalgo, Lea, Quay, Roosevelt, San Miguel, Torrance, Union, and Valencia counties in New Mexico, and primarily in the panhandle in Texas; in addition, it has been reported from Baca County in southeastern Colorado, and Beaver and Cimarron counties in northwestern Oklahoma.
Mimosa occidentalis (Wooton & Standley) B. L. Turner is an illegitimate name that pertains here.
Selected References
None.