Dalea leucostachya var. leucostachya

  • Title

    Dalea leucostachya var. leucostachya

  • Authors

    Rupert C. Barneby

  • Scientific Name

    Dalea leucostachya A.Gray var. leucostachya

  • Description

    54b. Dalea leucostachya Gray var. leucostachya

    (Plate LXIII)

    Maturing as a rounded, many-stemmed shrub up to ± 2 m diam, but sometimes flowering first as a weakly suffrutescent herb; foliage and stems usually pilosulous throughout, the leaflets of main cauline leaves sometimes glabrous above; panicle of spikes usually with some developed leaves subtending lower spikes, sometimes leafless; 2n = 7 II (Mosquin). — Collections: 17 (ii).

    Rocky and brushy hillsides in the oak-belt, coming out into arid grassland and thorn-forest, it: 1300-2100 m (4330-7000 ft), locally plentiful but scattered, Sierra Madre Occidental on the w. slope from valley of Rio Mayo in s. Sonora and adjoining Chihuahua to s. Sinaloa, and on the e. slope and adjoining mountainous margin.of Meseta Central from centr. Chihuahua to w. Zacatecas; barranca of Rio Grande de Santiago near Guadalajara, Jalisco.— Flowering August to January. —Representative: Sonora. Alamos: Sa. Charuco, Gentry 1699 (ARIZ, F, MEXU, UC). Chihuahua. Chinipas: Sa. Canelo, Gentry 2860 (ARIZ, F, MEXU, UC); Balleza: Guasarachi, Goldman 148 (GH, US); Chihuahua: Sa. de Mapula, Pringle 721 (BR, F, NY, MEXU, UC, W). Durango. Santiago Papasquiaro: 8 mi. s.-w. of Santiago, Mosquin et al 6888 (NY); Durango: Durango, Palmer 614 (C, F, NY, UC, US). Sinaloa. Badari- guato: Sa. Surutato, Breedlove & Kanahara 16833 (CAS); Concordia: Palmito, Ripley & Barneby 14,017 (CAS, NY, US). Zacatecas. Sombrerete: Sa. Papanton, Ripley & Barneby 14,155 (CAS, MEXU, NY, US). Jalisco. Guadalajara: La Barranca, Pringle 7329 (NY).

    Dalea leucostachya Gray var. leucostachya. D. leucostachya ( with white spikes) Gray, Mem. Amer. Acad. II, 4 (Pl. Wright. 1): 32. 1849 ("leucostachys") —"At Cosiquiriachi, in the Sierra Madre [ = Cusihuiriachic, ± 85 km airline s.-w. of Ciudad Chihuahua], Dr. Wislizenus." — Holotypus, GH! — Parosela leucostachys (Gray) Rose, Contrib. U. S. Nat. Herb. 10: 104. 1906.

    Dalea decipiens (deceptive) M. E. Jones, Extr. from Contrib. West. Bot. 18: 43. 1933 (cf. Morton, Contrib. U. S. Nat. Herb. 29: 102. 1945). —"No. 27229, from La Barranca [near Guadalajara, Jalisco], Nov. 23 1930." — Holotypus, POM! isotypi, NY, UC, US!