. 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, and a synopsis of the vegetable kingdom . 6 ft. high: Ivs. opposite, ovate, acu-minate, serrately crenate: fls. verticillate, many in aterminal raceme. 1528 16:163. 1852:281. F. W. Barclay. RUSSIAN CACTUS. Same as Russian Thistle. RUSSIAN FRUITS. See Salsola. See Pomology. R. THISTLE. RUST. A name for a clas
. 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, and a synopsis of the vegetable kingdom . 6 ft. high: Ivs. opposite, ovate, acu-minate, serrately crenate: fls. verticillate, many in aterminal raceme. 1528 16:163. 1852:281. F. W. Barclay. RUSSIAN CACTUS. Same as Russian Thistle. RUSSIAN FRUITS. See Salsola. See Pomology. R. THISTLE. RUST. A name for a class of fungi which producedisease in plants. Rusts are of the class mycelium branches among the tissues of the hostand produces several kinds of spores, either upontlie one host (autcecious), or upon different hosts(heteroecious). These spores, as shown typically in thedisease of the wheat, are called respectively uredospores,teleutospores, fecidiospores, etc. Recent researches byEriksson and Henning in Sweden show that the threecommon rusts which affect the grains, namely: Pucciniagraminis (Pigs. 2221-2), P. rubigo-vera and P. coronata,can be split up into seven species, characterized bytheir cultural reactions with a large series of plants, andthat Puccinia (jraminis has besides six specialized.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1906
