By Theodore F. Niehaus

Книга содержит описания и иллюстрации для 1492 видов из seventy seven семейств - фактически для всех дикорастущих цветов от Британской Колумбии до Калифорнии, от Скалистых гор до тихоокеанского побережья. Каждое видовое описание включает сведения по размерам, местообитаниям, распространению, периоду цветения, обычные и научные названия.
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Read Online or Download A Field Guide to Pacific States Wildflowers: Washington, Oregon, California and Adjacent Areas PDF

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Additional resources for A Field Guide to Pacific States Wildflowers: Washington, Oregon, California and Adjacent Areas

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10), but in other woods they are arranged in clusters or radial chains (Fig. 9). Axial parenchyma cells may be independent of the vessels (apotracheal) or associated with them (paratracheal), and sometimes occur in regular tangential bands. 6 Secondary xylem: Quercus robur (Fagaceae), block of wood at edge of transverse and tangential longitudinal surfaces, showing large early (spring) wood vessels. axial parenchyma cells are often more abundant than fibres, making this type of wood soft and easy to carve.

5). 3 Primary Vascular System The primary vascular system is mostly derived from the procambium near the shoot apex. Primary vascular bundles possess both xylem and phloem, arranged either adjacent to each other (in collateral vascular bundles: Fig. 12), or with strands of phloem on both sides of the xylem (bicollateral vascular bundles), or with xylem surrounding the phloem (amphivasal vascular bundles). In woody angiosperms, internodal stem vasculature is typically arranged either in a continuous cylinder, or in a cylinder of separate or fused collateral bundles, with the phloem external to the xylem (Fig.

6), which extend throughout the ground tissue of the stem and leaves. Plants with succulent stems, such as many Cactaceae, typically possess regions of large thin-walled cells that contain a high proportion of water. g. corms of Crocus) are specialized as storage or perennating organs; they store food reserves in the form of starch granules, most commonly in the inner cortex. 5). 3 Primary Vascular System The primary vascular system is mostly derived from the procambium near the shoot apex. Primary vascular bundles possess both xylem and phloem, arranged either adjacent to each other (in collateral vascular bundles: Fig.

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