Download The Genera of Grasses of the United States : With Special Reference to the Economic Species - Hitchcock file in PDF
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Plants, is represented in the southeastern united states by about 575 species in his sexual system of classification, linnaeus recognized 38 genera of grasses.
Oct 1, 2008 long-awaited replacement for grasses of the united states by hitchcock the contents include a listing of the genera in each of the 25 tribes.
Keys to the subfamilies and tribes of 113 genera are taken from hitchcock's genera of grasses of the united states, 1936, adapted to the flora of venezuela. The text is in spanish, and the work is illustrated by drawings.
The genera of grasses of the united states with special reference to the economic species.
The grass family is so large, consisting of some 600 genera, that for convenience it has been divided into different tribes.
Much has already been written about the value of certain grasses as forage crops and for human consumption.
Jan 10, 2005 the grasses of the united states: being a synopsis of the tribes and genera, with descriptions of the genera, and a list of the species.
Bamboos include over 1,000 species of woody, perennial grasses in more than tropics, with one species (arundinaria gigantea) native to the united states.
The genera of grasses of the united states with special reference to the economic species related titles.
Markers (soreng andropogoneae, the two united as supertribe andropogono-.
(gesneriaceae)reproductive versatility in the grassescontributions from the united states national.
General: needle-and-thread is a native, tufted, cool-season grass common to the prairies, plains and foothills of the western united states. It is a perennial bunchgrass, 1- 4 feet tall with erect, smooth culms and long, flat leaves 8- 12 inches long. The inflorescence is a contracted panicle that remains partially in the sheath.
The catalogue of new world grasses (cnwg) is an on-going project led by agrostologists from five institutions to database, using tropicos, and link all nomenclature, types, synonymy, current taxonomy, and distribution for grasses occurring from alaska and greenland to tierra del fuego.
All the species feed on the sap (rather than the seeds) of plants, mostly grasses, and most of the species live between the sheaths of leaves. The most economically important species is the north american chinch bug blissus leucopterus, a destructive pest of maize crops in the united states.
Modern taxonomic treatments of the grass family (poaceae, gramineae) recognize about 10,000 species and as many as 785 genera. This book provides detailed descriptions of these genera, in alphabetical sequence, the descriptions having been generated by computer from a taxonomic data bank.
The general type of true grasses is familiar in the cultivated cereals of temperate grasses, however (species of poa, bromus and others), the edges are united.
Contents: preface; introduction; accounts of the grasses; key to the genera of the grasses; glossary; index.
Key to the genera of grasses of the conterminous united states. Key to the genera of grasses of the conterminous united states.
Grasses catalogs all 169 numbered genera and 1398 indigenous species,.
The grasses of the united states, a synopsis of the tribes, with descriptions of the genera (1883) agricultural grasses of the united states (1884) a descriptive catalogue of the grasses of the united states (1885) report of an investigation of the grasses of the arid districts (2 parts, 1886–87) grasses of the south (1887).
Sandburs are closely related to grasses in the genus pennisetum, which do not species reaching its northern limit in desert grassland in southwestern united.
The manual also outlines the common uses to which grasses are put and discusses in general terms their distribution, classification, nomenclature, and common names. The 1,199 drawings make identification of any grass species found in the united states a virtual certainty.
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