Astragalus lentiginosus Douglas var. borreganus M. E. Jones, Contr. W. Bot.

Castillón, Eduardo Estrada, Quintanilla, José Ángel Villarreal, Delgado-Salinas, Alfonso & Rebman, Jon P., 2023, The genus Astragalus (Leguminosae: Papilionoideae: Galegeae) in Mexico, Phytotaxa 586 (1), pp. 1921-1935 : 1921-1935

51.2. Astragalus lentiginosus Douglas var. borreganus M. E. Jones, Contr. W. Bot. 8: 3. 1898

Type:— USA, California, Borregos Springs , southeastern California, 16 April 1895, T. S. Brandegee (holotype: UC 81347 digital image!; isotype: POM, not found) .

Astragalus coulteri Benth., Pl. Hartw. 307. 1848. — Tragacantha coulteri Kuntze, Revis. Gen. Pl. 2: 944. 1891. — Astragalus lentiginosus var. coulteri M. E. Jones, Contr. W. Bot. 8: 4. 1898. — Cystium coulteri Rydb., Bull. Torrey Bot. Club 40: 50. 1913.

Distribution:— In Mexico, recorded in Sonora, in northwestern (San Luis Río Colorado and Golfo de Santa Clara), northeastern (San Fernando Ranch and Peñasquito), and in the central-northern area (Agua Prieta, Santa Ana and Magdalena). Also reported for the Peninsula of Baja California ( Wiggins, 1980; samples not seen). Also in California ( Fig. 15 ).

Habitat:— Desert plains; sandy and gravelly soils; disturbed areas; associated with Larrea, Ephedra, Hesperocallis, Encelia, Opuntia, Hilaria, Ambrosia, Aristida, Oenothera, Typha, Ambrosia , and Tamarix ; 30– 700 m.

Speciemns examined:— BAJA CALIFORNIA: (reported by Wiggins, 1980, material no observed). SONORA: 26 February1958, Along Mexican Highway 2, 3.5 miles south-east of San Luis , P. H. Raven 11637 ( CAS, NY) ; II-1904, La Grulla near to Intl. boundary, D. T. MacDugal, s.n. ( NY) ; 4 March 1992, 5 March 1992, Ca. 9 airline km NNE of El Golfo de Sannta Clara, R. S. Felger, 92-181, K. Cliffton ( CAS, MEXU) ; 4 March 1992, 9 km on Mex Hwy 2 east of center of San Luis, Rio Colorado , R. S. Felger 92-163, K. Cliffton ( CAS, NY, SD) ; 6 March 1992, Ca. 14 airline km NNW of El Golfo de Santa Clara, at 3 km by road east of the El Golfo highway (Son 40) on the road to Tornillal and La Salina, R. S Felger 92-220, K. Cliffton ( MEXU, NY) ; 6 March 1992, 10 km by road northeast of Sanchez Islas (abandoned RR mainentence station), NE of El Golfo de Santa Clara, R. S Felger 92-215, K. Cliffton ( MEXU ; 13 March 2010, Sonoran Desert , ca. 7 km E of San Luis Río Colorado, B. T. Wilder 10-02, E. Ezcurra, P. Dayton, A. Martínez-B., N. Pietrasiak, L. Weller ( USON, SD) ; 4 March 1992, 9 km on Mex Hwy 2 east of center of San Luis Río Colorado , R. S Felger 92-163, K. Cliffton ( MEXU) ; 12 March 1993, San Luis Río Colorado , east side of the city, ca. 2 km east of college ( CESUES) , R. S Felger 93-210, D. O Reina ( MEXU) ; 23 March 1993, Delta Region of the Rio Colorado. Santa Clara Slough , D. O. Reyna s.n. ( MEXU) .

Figures

FIGURE 15. Map showing the distribution of Astragalus lentiginosus var. australis, A. lentiginosus var. borreganus, A. longissimus, and A. lotiflorus in Mexico.