Oxytropis
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Read about Oxytropis in the Standard Cyclopedia of Horticulture
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Oxytropis (Greek, sharp keel). Leguminosae. Perennial herbs, half-shrubs and shrubs. The genus is like Astragalus, but is distinguished by a subulate beak at the tip of the keel. The American species are tufted with numerous short sts. from a hard and thick rootstock: Lvs. odd-pinnate with 7-16 pairs of lfts., which are woolly and white beneath: calyx tubular or tubular-campanulate: fls. ea-shaped (papilionaceous), with an erect standard, wings elongated, keel occasionally with thorn-like apex, longer or shorter than the wings, in racemes, spikes or heads and range from yellow, white through blue and purple to crimson: pods many-seeded.—About 234 species with the center of their distribution in Asia from Siberia to the Caucasus Mts. and Turkestan. A few species reach the mountains of Cent. Eu. None occurs in Afr. About 18 species found in the Rocky Mts. are referred to Aragallus, a generic name brought into prominence by E. L. Greene (Pittonia 3:208) and reviewed in Erythea 7:57-64 (1899) without definition. O. Lambertii is poisonous to stock. It is one of the most characteristic loco-weeds of the VV. (see Poisonous Plants). Locoed sheep are difficult, to herd, as they stray away from the flock; slight locomotor ataxia is manifested with twitching of the eyelids and grinding motion of the jaws. About a dozen kinds of Oxytropis are cult, in Eu., mostly as rock plants. They are hardy, easily prop, by seeds or division, and prefer a dry, sandy loam. These plants are of minor value horticulturally. O. hibrida, Bruegg. Probably a hybrid between O. campestriss and O. sericea or O. Hallesi. Perennial, from Switzerland. — O. ochroleuca. Bunge. Lvs. pinnate, 3-4 in. long, with oblong-lnnceo- Intelfts.: fls. small, drooping, in short racemes, yellowish white. N. Asia.— O. villosa. Blank (Aragallus villosus, Rydb.) Densely cespitose: foliage silvery white: fls. creamy white, in dense spikes; calyx silky, villous: pod white-silky tipped with hooked beak. Mont.— O. yunnantensis. Franch. Sts. many, woody: lfts. in 8-11 pairs, lanceolate: fls. in dense head of 7-12, deep blue. Yunnan.
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References
- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963
External links
- w:Oxytropis. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
- Oxytropis QR Code (Size 50, 100, 200, 500)
