Astragalus goldmanii M. E. Jones,

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

31. Astragalus goldmanii M. E. Jones, Rev. N.-Amer. Astragalus 281. 1923

Type:— MEXICO, Chihuahua, Hidalgo del Parral , 19 September 1898, Goldman 119 (holotype: US00004097 digital image!; isotype BM000931605 digital image!, GH00059412 digital image!).

Hamosa goldmanii (M. E. Jones) Rydb., Bull. Torrey Bot. Club 54: 332. 1927.

Perennial. Stems up to 60 cm long, thin, erect, suberect to decumbent, densely minute strigose and villous, the trichomes short, up to 1 mm long, appressed or both mixed, appressed and straight together. Stipules 1.5–6 mm long, semi-clasping, not connate, triangular to lanceolate. Leaves 1.5–9.4 cm long; leaflets 13–21, 2–10.3 mm long, linear, elliptic to oblanceolate, acute or obtuse, glabrate or pubescent adaxially. Peduncles 3–18 cm long, straight or curved; the racemes mainly long, 3–18 cm long, flowers 13–65, pendulous. Flowers ochroleucous, pale yellow to lilac, lilacwhite, lilac-purple, dull purplish, *violet, turning yellow or yellowish with purple tones to blue, blue-purple or even blue-violet when drying, sometimes the banner violet veined at center; the calyx 2.6–3.6 × 1.4–1.8 mm, strigose, trichomes white and black mixed, the tube 1.5–2.1 mm long, the teeth 0.4–1.5 mm long, triangular to subulate; the banner 4–6 × 2.4–3.5 mm, recurved, ovate, ovate-rhombic to rhombic, shallowly or markedly retuse distally; the wings 3.8–6 × 1.2–2.2 mm, the claw 1.6–2 mm long, the blade 2.7–5 mm long, oblanceolate to elliptic; the keel 3.4–4.7 × 1.4–1.8 mm, the claw 1.3–2.3 mm long, the blade 2.1–2.8 mm long, oblanceolate to elliptic, incurved. Pod 3.1–6 (7.8**) x 1.8–2.7 mm, pendulous, sessile, persistent when mature or tardily deciduous, semi-ovate, triquetrous to trigonous, somewhat inflated but trigonous-shaped, basally rounded, the apex with a short beak, ventrally keeled, dorsally shallowly to wide sulcate, lateral faces rounded, inflate, the valves papery, septum complete, the pod thence bilocular, the valves green, brown to ochre, densely pubescent, the trichomes white and black; ovules 4–8; seeds to 2 mm long, mitten shape, purple or olive.

Distribution:— Endemic to Mexico. Mountains of northern Mexico, from southern Chihuahua (Parral and Guadalupe y Calvo), western (Topia and Canelas), central (Santiago Papasquiaro and Tepehuanes) and central-eastern (Pajaritos, Yerbaníz and Durango) Durango to northern ( Guadalupe) central (Fresnillo) and southern (El Sauz and south Las Tinajas and La Saladita) from Zacatecas, south-central Aguascalientes (between Calvillo and Aguascalientes), and rare in Nuevo León (Santiago). Formerly unknown to the mountains of northeastern Mexico, it is the first record of the species for this part of Mexico ( Fig. 9 ).

Habitat:— Loose disturbed patches; plains and slopes with calcareous and stony yellow, shallow soils; limy roadbanks; gullied calcareous shale hillsides; grassland-scrub, mountain grasslands and coniferous forest; associations of pine-oak - madrone - juniper; oaks forest; juniper - acacia forest; areas with disturbance, with weeds in cultivated areas, along the road; 1750–2105 m.

Comments:— Species easily distinguishable from others by its triquetrous but inflated, sessile and small pod. Morphologically similar to A. vaccarum , but this species has leaflets (3–24 mm long), wings (4.9–7 mm long) and linear-elliptic to lanceolate and larger pod (6–12 mm long). * Zacatecas, E. D. Enriquez 413 (MEXU), ** Spellenberg 10721 (CIIDIR, NY).

Specimens examined:—AGUASCALIENTES: 3 November 1959, Road to Calvillo, 19–20 miles west of Aguascalientes, R. McVaugh, W. Koelz 91 ( CAS, MEXU, NY) ; 24 August 1960, 30 km al W de Aguascalientes , sobre el caminoa Calvillo, Rzedowski 14024 ( ENCB) . CHIHUAHUA: 12 July 1986, on the road to Guadalupe y Calvo 19 km W of junction with Higway 12, ca 27 km W of Hidalgo de Parral, shaley hills, R. Spellenberg s.n. ( NY) ; 3 October 1965, 5 miles w. of Parral, H. D. Ripley 13932, R. C. Barneby (CAS, MEXU, NY, US); 20-VII-1983, Creel , in rocky hill, Y. Saiki M-40 ( ENCB). DURANGO : 30 August 1989, 4 km de Tepehuanes , sobre el camino Tepehuanes-Guanacevi, A. Benítez P. 718 ( CIIDIR, IBUG) ; 6 October 1943, Near Yerbanis, H. S. Gentry 6939 ( NY) ; VIII-1898, Ramas to Lude, E. W. Nelson 4708 ( NY, US) ; 28 July 1944, Tepehuanes, G. L. Fisher 44277 ( NY) ; 18 September 1982, 111 road mi. NW of Santiago Papasquiaro , on road to Topia, 5 mi. W of Cienega Nuestra Senora, R. W. Spellenberg 6715, J. Zimmerman ( NY); IV / VIII-1896, Santiago Papasquiaro and vicinity, E. Palmer 440, 441 ( NY) ; 23 August 1983, Santiago Papasquiaro , grounds of Escuela Jose Ramon Valdez, R. Corral 570, R. D. Worthington 11316 ( NY) ; 16 July 1982, Loc. 16 km, del Entronque de la Brecha a Topia con la Carr. Santiago Papasquiaro-Tepehuanes, P. Tenorio L. 1022, C. Romero de T. ( MEXU, NY) ; 17 September 1972, On low gypsum hills about 0.5 mile northeast of El Sombretella, about 15 miles southeast of Cuencame along Mexico Highway 49, J. L. Reveal 3140 ( NY) ; 29 July 1985, Mezquital—Los Arcos (Aprox. 11 Km. de La Guajolota ), I. Solis 74 ( MEXU). NUEVO LEÓN: near San Losé de las Boquillas, gypsum soils , 18 July 2010, Hinton et al. 29171 ( ANSM). ZACATECAS : 17 October 1990, 50 km NW of Fresnillo, on Hwy 49, road cut to hilltop, lime roadbank, R. Spellenberg 10721, M. Mahrt ( CIIDIR) ; 15 October 1965, 3 miles s. of El Sauz, H. D. Ripley 14146, R.C. Barneby ( CAS, MEXU, NY, US) .

Figures

FIGURE 9. Map showing the distribution of Astragalus goldmanii, A. greggii, A. gruinus, and A. guanajuatensis in Mexico.