Flora of Australia 2024 pdf epub mobi 电子书

Volume 44A of the "Flora of Australia" documents four subfamilies of the grass family "Poaceae," describing 77 genera and 405 species.The largest subfamily is the "Pooideae," a predominantly temperate group with many annual species. It includes the large endemic genus "Austrostipa," an important component of native pastures, but one which also contaminates wool and injures stock with its penetrating seeds. Poa, also largely endemic, grows mainly in southern areas of Australia, and is characteristic of higher altitudes. The subfamily also includes our most important grain crops, wheat, barley, rye and oats, and introduced temperate pasture grasses. There are also many weedy genera such as "Briza" and the economically significant "Nassella."The largely tropical "Bambusoideae" are poorly represented in Australia, with only three native species and another three naturalized. Many ornamental species of 'bamboo' are grown in Australia, but few have become naturalized. Also tropical is the subfamily "Pharoideae." It includes Leptaspis, with its strange inflated florets, the subject of the cover painting. The final subfamily, the "Ehrhartoideae," contains another important grain crop, rice, as well as the widespread weedy genus "Ehrharta."Features- Only national descriptive and identification book to all the native or naturalized grasses in these subfamilies- Updated taxonomy, maps and descriptions, with several new species described- Copiously illustrated: nearly every genus is illustrated, 51 plates of line drawings and 64 color photos- Massive cooperative effort by Australian and international botanists- Second descriptive volume in a projected set of four grass volumesthirty-two authors, illustrators and photographers have contributed to this volume.