Astragalus douglasii var. perstrictus (Rydb.) Munz & McBurney ex Munz, Bull. S. Calif. Acad. Sci.

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

21.3 Astragalus douglasii var. perstrictus (Rydb.) Munz & McBurney ex Munz, Bull. S. Calif. Acad. Sci. 31(2): 65. 1932

Type:— USA, San Diego, Hill valley between Campo and Jacumba, 28 May 1903, Abrams 3636 (holotype (based on Phaca persitricta ): NY01248712 digital image!; isotype: RSA 0003592 digital image!, NY01248712 digital image!, CAS 0006763 digital image!, CAS 0006764 digital image!, BM001042736 digital image!, US00001508 digital image!, PH00028208 digital image!).

Phaca perstricta Rydb., N. Amer. Fl. 24(6): 344. 1929.— Astragalus parishii A. Gray subsp. perstrictus (Rydb.) Abrams, III. Fl. Pacific States 2: 583. 1944.

Stems erect, up to 1 m de long; pod 3.5–6 cm long, the valves minute strigose, not humistrate. * R. Moran 24129 (NY).

Distribution:— In Mexico, located between 31°40’– 32°25’N –115°50’– 116°30’W; this variety has the smaller distribution, from Tecate, Ejido Jacumé, Valles de las Palmas, through Sierra Juárez, including El Cóndor, Laguna Hanson to El Tecolote, El Coyote and El Calabozo. Sometimes fairly common in disturbed openings. Also, in extreme southern California ( USA) ( Fig. 6 ).

Habitat:— Granitic and sandy soils; rocky hillsides; volcanic slopes; sandy arroyos; shallow slopes; cleared shallow valley; pine-juniper forest; scrublands with sagebush; oak scrub; pinyon-juniper forest; disturbed chaparral with sumac, sagebush, manzanita, jointfir; desert chaparral; sagebush and creosote bush tickets; 1000–1700 m.

Specimens examined:— BAJA CALIFORNIA: 20 June 2007, 14.4 miles S of El Condor and Mex. Hwy. 2, along the road to Laguna Hanson ., J. Rebman 13539 ( BCMEX; SD) ; 29 May 1973, An estimated 25 mi. E of Tecate along Highway 2, R. & M. Spellenberg 3305, H. Wolfe, J. Syvertsen ( ENCB, NY) ; 7 June 1971, Along Rte. #2, 49.6 mi W of Jct with main Rte to Mexicale, L. McGill, 8679, D. J. Pinkava ( NY) ; 29 May 1985, Sierra Juárez, 5 km south of Jacumé , R. Moran 30811 ( ENCB, NY, SD) ; 7 July 1979, Sierra Juarez, 2.0 km southsouthwest of La Hechicera, R. Moran 27720 ( ENCB, NY, US) ; 17 September 1983, Ca. 9 miles SW of Laguna Hanson, Sierra de Juarez , R. F. Thorne 57120, K. Kubitzki, P. Peterson, C. Annable ( NY) ; 3 September 1966, 2½ miles east of Rancho San Pedro , R. Moran 13457 ( NY) ; 15 May 1977, Sierra Juárez , 5 km W of La Rumorosa, R. Moran 24129 ( NY, SD) ; 17 September 1985, Ca. 9 miles SW of Laguna Hanson, Sierra de Juarez , R. F. Thorne 57120, K. Kubitski, P. Peterson, C. Anable ( NY) ; Jun2 1952, about 21 miles east of Tecate along road to Mexicali, I. L. Wiggins, J. H. Thomas 435 ( CAS, NY) ; 21 May 1973, Valley, 2.0 miles west of Cerro Colorado, R. Moran 20980 ( CAS, SD) ; 30 May 1982, Sierra Juarez; Rancho San Francisco, 6.0 km south of La Rumorosa , R. Moran 30815 ( CAS, SD) ; 30 June 1962, 9 May 1985, S of La Rumorosa: 4.2 miles south on road to Laguna Hanson , R. F. Torne 60534, W. Wisura ( CAS, SD, MEXU) ; 29 March 2013, Sierra Juárez Norte de Sierra Juárez. 1.2 km SE de Rancho Iracheta. S16, A. Medel N. 2013-021 ( SD) ; 28 April 2015, Vicinity of the Gabbro mountain called Cerro El Tecolote: south of Mex . Hwy 3 at Valle de la Trinidad; just southwest of General Leondro Valle ; along the road in a recently burned area to the west of Cerro El Tecolote , J. Rebman 30076 ( SD) ; 26 May 1956, 22 miles south of Tecate-Mexicali highway on road to Tajo Canyon, D. F. Howe 2540 ( SD) ; 28 June 1988, Parque Nacional Constitucion de 1857: Laguna Hanson ; ca. 23 miles East of Ojos Negro, T.S. Elias 10927, D. Arias, O. Dorado ( MEXU).

Figures

FIGURE 6. Map showing the distribution of Astragalus diphacus, A. douglasii var. glaberrimus, A. douglasii var. parishii, A. douglasii var. persitricuts, and A. emoryanus var. emoryanus in Mexico.