Astragalus purpusii M.E.Jones

국표에는 없다.

Astragalus purpusii is a pea plant species described by Marcus Eugene Jones. Astragalus purpusiiis included in the genusVedlar, and the familyof pea plants. No subspecies are listed in the Catalogue of Life.

Astragalus purpusii - Wikipedia, the free encyclopedia

 

Low or dwarf, caulescent perennial, with a stout woody taproot and branched, lignescent caudex shallowly buried in soil or litter, rather thinly strigulose with appressed or narrowly ascending hairs up to 0.35-0.7 mm. long, the herbage greenish or subcinereous, the leaflets glabrous above; stems diffuse, tufted or matted, the growth of the year 5-20 cm. long, simple or branched toward the base; stipules subherbaceous becoming papery-scarious, 1-5 mm. long, connate through ½-2/3 their length into a loose sheath; leaves 1.5-5 cm. long, shortly petioled or subsessile, with 13—23 crowded, oblong-obovate to oblanceolate, truncate-retuse, ciliate leaflets 1.5—6 mm. long; peduncles very slender, 1.5—4.5 cm. long; racemes closely 7-21-flowered, the flowers spreading and at length declined, the axis somewhat elongating, 0.4-1.6 cm. long in fruit; bracts membranous, pallid, lanceolate, 1.5—2.3 mm. long; pedicels at anthesis ± 0.6—0.8 mm. long, in fruit arched outward, a little thickened, 0.7-1.2 mm. long, tardily disjointing; bracteoles 0; calyx 2.4-3.6 mm. long, black-or fuscous-strigulose, the subsymmetric disc 0.4—0.5 mm. deep, the campanulate or obconic-campanulate tube 1.5-2.2 mm. long, 1.3-1.6 mm. in diameter, the slenderly or broadly subulate teeth 0.7-1.5 mm. long, the ventral pair commonly shortest, the whole becoming papery, marcescent, ruptured or not; petals pale purple, the banner striate; banner recurved through ± 45°, ovate-, obovate—, or suborbicular-cuneate, openly notched, 4.5 7.4 mm. long, 3.1-5 mm. wide; wings 4.1-5.7 mm. long, the claws 1.5-2 mm., the oblanceolate, narrowly oblong, or narrowly obovate, erose-emarginate or obtuse, slightly (and equally) incurved blades (2.8) 3-4.5 mm. long, 0.9-2 mm. wide; keel 3.5—4.3 mm. long, the claws 1.5-2 mm., the obliquely obovate or half- obovate blades 2—2.5 mm. long, 1.3—1.5 mm. wide, incurved through ± 80° to the blunt apex; anthers 0.25—0.3 mm. long; pod pendulous or declined, subsessile, obliquely ellipsoid or commonly widest above the middle and thus clavately ellipsoid, 5—8 mm. long, 2.2—3.4 mm. in diameter, cuneate or cuneately tapering at base, cuneate or abruptly contracted at apex into a conic cusp ± 1 mm. long, obtusely trigonous and a trifle laterally or dorsiventrally compressed, obtusely carinate ventrally by the convexly arched suture, flattened or shallowly sulcate dorsally, the thin, green, minutely strigulose valves becoming papery, stramineous, delicately cross-reticulate, inflexed as a complete or nearly complete septum 1.5-2.3 mm. wide; dehiscence unknown; ovules (2) 4-5; seeds (not seen ripe) ± 2-2.5 mm. long.

• Provided by: [B].Memoirs of the New York Botanical Garden

Distribution

Alpine meadows and open ground in the pine belt, or with junipers and arbutus, 9000-12,150 feet, apparently rare, known only from the mountains of southern Coahuila (Sierra de Parras; northwest of Fraile) and adjoining Nuevo Leon (Cerro Potosi, municipio de Galeana).—Map No. 10.—June to September.

• Provided by: [B].Memoirs of the New York Botanical Garden

Synonyms

   Atelophragma purpusi (M.E.Jones) Rydb. 

Astragalus purpusii M.E.Jones (worldfloraonline.org)

 

 

https://youtu.be/YhEjOWjV4p4