Astragalus ervoides Hook & Arn. var. maysillesii Barneby, Mem.

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

23.2. Astragalus ervoides Hook & Arn. var. maysillesii Barneby, Mem. New York Bot. Gard. 13: 448–450. 1964

Type:— MEXICO, Durango, El Salto, S along lumber road towards Pueblo Nuevo (about 60 km air mi, SW of C. Durango), 29 August 1952, J. H. Maysiles 7824 (holotype: MICH 1107106 digital image!) .

Keel tip frequently purple tinted (Spellenberg 13480, NMC).

Distribution:— Southwest Chihuahua (Bocoyna, Valle de los Monjes), southern Durango (El Salto, Las Rusias, Neveros, Huizar, El Guayabo, Hacienda Coyotes and Los Banks), and isolated in southwestern Jalisco (Sierra de Manantlán) ( Fig. 7 ).

Habitat:— Igneous and sandy soils; grassland in high plains; riparian areas with Cyperus spp. ; grasslands and forest; oak-conifer forests; pine forest; cold conifers associations of pine-oak-manzanita - silktassel; disturbed grasslands; pine-oak-madrone-juniper forests; disturbed conifer forest; 2390–2800 m.

Specimens examined:— CHIHUAHUA. 27 August 2004, Valle de los Monjes , ca. 5 km al SE de Creel, Mpio. Bocoyna, R. W. Spellenberg 13480 ( CFNL) . DURANGO. 9 September 1992, Reserva de la Biósfera la Michilia, Encina Gorda , Cerro Blanco, Mpio. Súchil, A. García 1643, J. R. Medina ( CFNL) ; 22 July 1996, Parque El Tecuán, al E de la entrada al parque, Mpio. Durango, A. García 2235, A. Acevedo ( CFNL) ; 9 August 1990, Municipio Pueblo Nuevo, Las Bayas de la UJED, bajo Los Alisos, A. García 657 ( CFNL, CIIDIR) ; 1 October 1971, About 25 mi. W. of City Durango on highway 40, R. W. Spellenberg 2724 ( ENCB, NY) ; 25 July 1981, 17 km al S de El Salto , cerca del paraje La Remuda, S. González 1763, M. González ( CIIDIR, NY) ; 26 September 1973, Along Mexico Highway 40, about 85.5 miles west of Durango and 116.5 miles east of Mazatlan, 12.2 miles west of Las Adjuntas and 6.3 miles east of La Ciudad , 23.7 miles west of El Salto , Sierra Madre Occidental, J. L. Reveal 3499, M. D. Atwood ( MEXU, NY) ; 5 October 1965, Sierra Madre 38 miles west of Durango on El Salto highway, H. D. Ripley 13965, R. C. Barneby ( CAS, NY, US) ; 8 August 1971, Along Mexico highway 40 at La Campana, 0.5 miles north of the highway, this road junction being 2.5 miles west of Las Adjuntas and 13.6 miles west of El Salto , near a sawmill and the small village of La Campana, Sierra Madre Occidental, J. L. Reveal 2692, W. J. Hess, R. W. Kiger ( NY, US) ; 21 July 1969, On eastern slopes of Sierra Madre Occidental , 20 km NE of El Salto on Mex. 40 to Durango, B. Marks 1243, C. Marks ( NY) ; 5 October 1965, H. D. Ripley 13998, Sierra Madre near Hacienda Coyotes, ± 5 miles east of El Salto , R.C. Barneby ( NY) ; 9 November 1963, Sierra Madre , 26 mi. west of Durango, H. D. Ripley 13490, R. C. Barneby ( NY) ; 18 October 1965, Sierra Madre 8.5 miles w. of El Salto , H. D. Ripley 14172, R. C. Barneby ( NY) ; 16 September 1979, 55–60 km SE of Durango City on road to La Flor, D. E. Breedlove 44136 ( MEXU, NY) ; 17 September 1979, Durango, 65–75 km SW of Durango City on road to La Flor, D. E. Breedlove 44195 ( MEXU, NY) ; 29/ 30 August 1934, Metades, north of Cueva. Sierra Madre Occidental , F. W. Rennell 18391 ( NY, US) ; 26 July 1972, Along Rte 40, 4.8 mi W of Los Mimbres, L. McGill, R. Brown, D. J. Pinkava 9467 ( NY) ; 17 August 1970, 1 miles SW of Durango, C. D. Johnson 115-70 ( MEXU, NY) ; 19 August 1970, 8 miles SW of El Salto , C. D. Johnson 131-70 ( NY) ; 21 July 1975, About 24 miles west of Durango, along highway 40, Torke 202, Dunn, Wallace ( ENCB, NY, TEX-LL) ; 25 December 1984, Caminos entre El Puerto del Picacho de San Campus (un paso 1.5 km distancia aérea al E de Estación Biológica “ Las Joyas ”) y “Cerro Las Chilillas” (ca. 2 km distancia aérea al NE del Cerro El Almeal). Sierra Manantlán Occidental, E. J. Judziewics, T. S. Cochrane 4958 ( NY) ; 24 July 1958, D. S. Correll 20123, On upper slopes of Mimbres Canyon , 26 miles west of Durango, route # 40 M. C. Johnston ( NY, TEX-LL) ; 25 August 1965, high grassland, boulder strewn, rocky area by Hacienda Coyotes, off Mex. 4, R. Kral 25747 ( ENCB, US) ; 15 September 1985, El Indio, 78 km, de La Carr. Durango-Mazatlán, P. Tenorio 9736, J. Ignacio S, C. Romero de T. ( IEB, MEXU, US) ; 10 September 1983, Pueblo Nuevo, P. Tenorio 4330, R. Torres C. ( IEB, MEXU, US) ; 16 July 1955, Coyotes Hacienda , 63 road miles west —southwest of C. Durango, J. H. Maysilles 7876 ( MEXU ez ( MEXU) . JALISCO: 25 December 1984, Caminos entre El Puerto del Picacho de San Campus (un paso 1.5 km distancia aérea al E de Estación Biológica “ Las Joyas ”) y “Cerro Las Chilillas” (ca. 2 km distancia aérea al NE del Cerro El Almeal). Sierra Manantlán Occidental, E. J. Judziewics 4958 ( NY) ; 27 September 1996, Los Amoles, 10 km al SO de Las Banderitas, Tuxpan de Bolaños, J. Calónico S. 3000 ( MEXU) .

Figures

FIGURE 7. Map showing the distribution of Astragalus ervoides var. ervoides, A. ervoides var. maysilesii, A. esperanzae, A. fastidius, and A. filipes in Mexico.