. 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. 1588 RUDBECKIA KUDBfiCKIA (after the two Professors Rudbeck, father and son, predecessors of Linnaeus at Upsala). CompdsUa. CoNE-rLOWEB. As defined by Gray (Syn. Flora N. Araer., 1S86), Rudbeckia is a genus of 21 spe- cies of North American herbs, many of which are hardj' and perennial, bearing in summer showy
. 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. 1588 RUDBECKIA KUDBfiCKIA (after the two Professors Rudbeck, father and son, predecessors of Linnaeus at Upsala). CompdsUa. CoNE-rLOWEB. As defined by Gray (Syn. Flora N. Araer., 1S86), Rudbeckia is a genus of 21 spe- cies of North American herbs, many of which are hardj' and perennial, bearing in summer showy fls. which usu-. RUDBECKIA The only full double form, apparently, is Rudbeckia Golden Glow, which has had great popularity since 1896. The origin of this great favorite seems to be un- known. About 1894 John Lewis Childs found it among some plants sent by correspondents. See Gng. 6:370. For the structure of the Rudbeckia inflorescence, see Fig. 829, Vol. IL ^^ ji^ The Cone-flowers are of easy cultivation in almost any soil and situation, from a semi-shady position to one in full sun. Most of the species are found inhabiting moist locations, but thrive well in the garden under the ordinary methods of cultivation, although if. laciniata and its double form. Golden Glow, do much better if abundantly supplied with moisture. H. hirtu, our Black-eyed Susan, —sometimes called by the children out west "Nigger-heads,"—will thrive in the driest, hottest situation, where many others would fail. The best known as a gar- den plant, and probably the showiest, is Golden Glow, which the under- signed considers the best perennial of recent intro- duction. If cut back severely when through blooming and well watered, it often produces a 2213. Rubus invisus, the cul tivated form known Bartel Dewberry. See Ritbus, page 15S6. ally have yellow rays, though in one species (i?. atro- rubens) the rays are all dark crimson, and in the other species the rays are occasionally more or less cov
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