. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 263. Tuberous Root of Pak-Choi. Alba, Boiss. Wild Mustard. Tall : Ivs. pinnatifld and rough-hairy: pods spreading, hairy, the lower part thick and few-seeded : seeds pale brown, large. Weed, from Europe. Sinapistrum, Boiss. Charlock. Tall : Ivs. strong- toothed, or sometimes nearly lyrate : pods knotty, glabrou


. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 263. Tuberous Root of Pak-Choi. Alba, Boiss. Wild Mustard. Tall : Ivs. pinnatifld and rough-hairy: pods spreading, hairy, the lower part thick and few-seeded : seeds pale brown, large. Weed, from Europe. Sinapistrum, Boiss. Charlock. Tall : Ivs. strong- toothed, or sometimes nearly lyrate : pods knotty, glabrous or hairy, the upper third indehiscent and 2-edged, usually 1-seeded. Weed, from Europe. BB. Pod distinctly 4-angled. nigra, Koch. Black Mustard. Fig. 268. Wide- spreading and loose grower : Ivs. pinnatifld, somewhat hairy: pods short and erect, glabrous ; seeds small and dark brown, pungent, supplying the mustard of com- merce. Cult, in Eu., but a weed in this mercial mustard is the flour of the seeds of this species chiefly, but the seeds of B. alba and probably of B. juncea are sometimes used. L_ jj_ B_ BBAVOA (Bravo, Mexican botanist). Amaryllid&cece. A small genus, much resembling in some of its species the tuberose (Folianthes), and considered by the writer as hardly distinct from it. Stems slender, from small thickened rootstocks: Ivs. mostly basal: inflorescence a lax spike or raceme; fls. always in pairs more or less bent or curved ; stamens 6, included within the peri- the flowers are not as showy as the common tuberose, yet the genus should be found in every choice bulb col- lection. Only one species has been cultivated to any extent, and even this species is not well known. As the in the high mountains of Mexico, they ought to be hardy in the southern stretches of the tem- geminiflora, Llav. & Lex. Mexican Twin Flower. Stems 1-2 ft. high: bulbs small, 1-1}^ in. long, the outer scales cut into fine fibers at the top: basal Ivs. linear, erect, 6


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