. Un manuel de mauvaises herbes : avec des descriptions de tous les plus pernicieux et problématiques des usines aux États-Unis et au Canada, leurs habitudes de croissance et de distribution, avec des méthodes de contrôle . Les mauvaises herbes. LEOUMINOSAE (.241) DE LA FAMILLE D'IMPULSIONS VERRES LOCO-WEED Oxytropis Lambe'rti, Pursh. {Aragdllus spicatus, Rydb.) Autres noms anglais : Colorado Loco-vesce, Loco-blanc, blanc de mauvaises herbes Rattleweed. Native. Vivace. Se propage par graines. Temps de floraison : avril à la limite sud de la plage, d'août à limite nord. Temps de graines : de Juin à Octobre. Plage : Minnesota pour la Saskatchewan et la Colombie-Britannique, vers le sud jusqu'à Texa

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. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. LEOUMINOSAE (.PULSE FAMILY) 241 STEMLESS LOCO-WEED Oxytropis Lambe'rti, Pursh. {Aragdllus spicatus, Rydb.) Other English names: Colorado Loco-vetch, White Loco-weed, White Rattleweed. Native. Perennial. Propagates by seeds. Time of bloom: April at southern limit of range, August at northern limit. Seed-time: June to October. Range: Minnesota to the Saskatchewan and British Columbia, southward to Texas and Mexico. Habitat: Prairies and foothills; wild pastures and meadows. This plant not only has a far wider range than the preceding species, but also climbs higher up the mountain sides, being found in Colorado and Montana at an altitude of eight thousand feet. Where they grow in company, however, the Woolly Loco- weed is considered the more harmful'. The root is hard, thick, woody, and scaly, boring deeply into the earth; it is crowned with a thick tuft of nearly erect, odd- pinnate leaves, about four to eight inches long, with slender petioles and nine to nine- teen narrow, lance-shaped leaflets, about an inch in length and covered with fine, silky, whitish hairs; stipules hairy, mem- branous, lance-shaped, united to the base of the petiole. The peduncles also rise from the crown, eight to twelve inches in height, holding the dense flower-spikes well above the leaves; the flowers are usually white, and where the plant is abundant large areas appear as though covered with snow; but in some localities, usually in the higher mountain regions, there is 'great variation, some flowers being pink, others yellowish or violet or purple; they are large, more. Fig. 172. — Stemless L'oco-weed (Oxytropis than an inch long, slender, with erect, ovate Lamberti). x l-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabil

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