The genus Astragalus (Leguminosae: Papilionoideae: Galegeae) in Mexico Author Castillón, Eduardo Estrada 0000-0003-1061-9862 Universidad Autónoma de Nuevo León, Facultad de Ciencias Forestales, A. P. 41, 67700, Linares, Nuevo León, Mexico aeduardoestradac @ prodigy. net. mx; https: // orcid. org / 0000 - 0003 - 1061 - 9862 aeduardoestradac@prodigy.net.mx Author Quintanilla, José Ángel Villarreal 0000-0001-9672-8693 Universidad Autónoma Agraria Antonio Narro, Departamento de Botánica, Saltillo, Coahuila, Mexico javillarreal 00 @ yahoo. com; https: // orcid. org / 0000 - 0001 - 9672 - 8693 javillarreal00@yahoo.com Author Delgado-Salinas, Alfonso 0000-0002-9322-9968 Universidad Nacional Autónoma de México, Instituto de Biología, 21068 adelgado @ ib. unam. mx; https: // orcid. org / 0000 - 0002 - 9322 - 9968 adelgado@ib.unam.mx Author Rebman, Jon P. 0000-0003-1061-9862 Universidad Autónoma de Nuevo León, Facultad de Ciencias Forestales, A. P. 41, 67700, Linares, Nuevo León, Mexico aeduardoestradac @ prodigy. net. mx; https: // orcid. org / 0000 - 0003 - 1061 - 9862 & San Diego Natural History Museum, P. O. Box 121390, San Diego, California, 92112 jrebman @ sdnhm. org; https: // orcid. org / 0000 - 0002 - 4150 - 7356 & Universidad Autónoma de Nuevo León, Facultad de Ciencias Forestales, A. P. 41, 67700, Linares, Nuevo León, Mexico aeduardoestradac @ prodigy. net. mx; https: // orcid. org / 0000 - 0003 - 1061 - 9862 aeduardoestradac@prodigy.net.mx text Phytotaxa 2023 2023-03-07 586 1 1921 1935 http://dx.doi.org/10.11646/phytotaxa.586.1.1 journal article 10.11646/phytotaxa.586.1.1 1179-3163 7703999 14. Astragalus coccineus (Parry) Brandegee, Zoë 2: 72. 1891 Type (Cotypi):— USA , Arizona , Inyo County , Lone Pine , Inyo Ringe , Brandegee non date, two specimens on sheet, UC 83886. Xylophacos coccineus (Brandegee) A. Heller , Muhlenbergia 2: 217. 1906 . Astragalus grandiflorus S. Watson, Proc. Amer. Acad. Arts 17: 370. 1882 . Astragalus purshii Douglas var. coccineus Parry ex Orcutt, W. Amer. Sci. 7: 10. 1890 . Perennial. Stems subterranean, buried, emerging from subsoil, thence acaulescent, the aereal stems small, up to 13 cm long, densely white-grayish, the trichomes 1.3–2.5 mm long, of two sizes, short and long ones, ascendant to spreading. Stipules 5–10 mm long, semi-clasping, not connate, and not so evident due to dense pubescence, triangular to lanceolate. Leaves basal, rising from the apex of the root, 2–10 cm long; leaflets 7–15, sometimes, the pairs widely separated to each other, 3–14 mm long, elliptic, oblanceolate or spathulate. Peduncles 2–10 cm long; the racemes 0.5–2.5 cm long, flowers 3–10, ascendant. Flowers red, the banner with central whitish area and purple veined; the calyx cylindrical, 16–24.5 × 4.5–6. mm, ordinarily dense white pubescent, seldom with few black scattered trichomes, the tube 12–16 mm long, reddish; the teeth 3.5–8 mm long, hard, lanceolate; the banner recurved, 3.5–4.5 × 1.2–1.8 cm , oblanceolate, obtuse; the wings 3.4–3.7 × 0.3–0.4 cm , linear to oblong or lanceolate; the claw 1.6–2.2 cm long, the blade 1.8–2 cm long; the keel 3.8–4 × 0.5–0.8 cm , the claw 1.7–2.1 cm long, the blade 1.9–2 cm long. Pod 2.5–4 × 0.9–1.5 cm , humistrate but ascendant when fruit rippen, ovate, ovate-elliptic to ovoid, sometimes lunate, base rounded or narrow, compressed basally, sulcate apically, and ending in a short beak, the valves sub-fleshy, turning leathery with age, not evidently, coarse, septum absent, pubescence dense as stems; ovules 33–45; seeds 2.5–4.2 mm long, mostly brown, sometimes with purple tones. Distribution:— Rare in Mexico, only from Baja California in the north extreme portion(Sierra Juárez and La Rumorosa surrounding area) and in the central portion (Sierra La Asamblea). Also in Nevada , Colorado , Arizona and California ( USA ) ( Fig. 4 ). Habitat:— Gravelly soils, in pine forest with juniper, and madrone, 1300 m . Also present in California ( USA ) . Comments:— Species easily differentiable from others for its small size, acaulescent, and narrow red flowers; unmistakable with any other Mexican species. Specimens examined:— BAJA CALIFORNIA : 17 April 1994 , 1 mile W of La Rumorosa , along Mex . Rte. 2, between Tecate and Mexicali , J. Rebman 2618 ( BCMEX , SD ) ; 14 April 1977 , Sierra Juárez. Old grade 7 km W of La Rumorosa , R. Moran 24068 ( ENCB , NY ) ; 16 May 1982 , Sierra Juarez ; 4.0 km southwest of La Rumorosa , R. Moran 30741 ( SD ) ; 14 April 1979 , Sierra Juarez ; Cuesta Blanca , 6.0 km west of La Rumorosa R. Moran 27006 ( CAS , SD ) ; 15 May 1977 , Sierra Juarez ; 5.0 km west of La Rumorosa , R. Moran 24122 ( SD ) ; 24 April 2004 , Sierra La Asamblea : northeast of El Crucero (junction of Hwy. 1 & the road to Bahia de Los Angeles ), NNW of Rancho San Luis ; along the trail to Cerro La Equis , NW of the camp called Datilillo, J . Rebman 10000, M. Salazar , H. Riemann , B. Vinton ( SD ) ; IV-1932 , Alaska , a small military outpost on road from mexicali to Tia Juana, F. M . Cota s.n. ( CAS , US ) .