By Ernest M. Gifford
Dirt jacket notes: "In Morphology and Evolution of Vascular crops you will discover up to date discussions of class and sexuality in ferns; of the body structure of the unusual African wilderness plant Welwitschia mirabilis; and of fossil plant life from the decrease and Mid-Cretaceous eras. As helpful and interesting to the introductory botany or plant morphology pupil as to the reader, the 3rd version of this vintage textual content bargains thoroughly present descriptions of the mature constitution, organ improvement, replica, fossil checklist, phylogenetic developments, and interrelationships of each significant vascular plant workforce. In revising and updating this very popular textbook, Ernest M. Gifford offers attention-grabbing insurance of the latest advancements in: The beginning of alternation of generations within the existence cycle; Comparative embryogenesis in conifers; Comparative embryogeny of dicotyledons and monocotyledons; Angiosperm pollen and gymnosperm pollination biology. besides, readers are taken care of to a gorgeous paintings application, inclusive of many new images and expertly revised and rendered drawings that visually depict plant shape and constitution. perfect for textual content or reference, Morphology and Evolution of Vascular vegetation bargains a provocative trip during the global of vascular vegetation. And with its authoritative and exact insurance, various appealing illustrations, and remarkably transparent writing sort, the publication that set the traditional in vascular plant morphology now units a better one."
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Additional resources for Morphology and Evolution of Vascular Plants
There are, however, varieties of fig trees of the same species which produce delicious fruit independent of pollination. This is a common natural phenomenon in horticulture called parthenocarpy (production of seedless fruits). Not unlike the date palm, the fig tree digresses heavily in distribution from the area of the 1,000 mostly tropical species included in the genus. Although its origin is disputed, it is now reliably believed that the fig growing in the jungles of the Caspian foreshore, northwest Turkey, and probably elsewhere in these surroundings, is the ancestor of the one domesticated by man.
Where the loess is not cultivated, a blackish-green dwarfshrub, the black hammada (Hammada scoparia), dominates much of the steppe. Gravel Deserts. These comprise wide areas of the central and southern Negev, where vegetation is extremely poor and largely confined to runnels and wadi beds that cross the plains. In these areas the gravelly hills and their slopes display scattered bean caper bushes (Zygophyllum dumosum), associated with a few other dwarf-shrubs and herbs, or are altogether plantless.
Europaea, the only Mediterranean species, is in a sense an outsider. A stately tree with a gnarled gray trunk, growing 5-8 m. tall and up to 1 m. wide, it is richly branched and abundantly covered with oblong-lanceolate evergreen leaves, gray below and blue-green above. Its clusters of small, white flowers appear in spring and are shed soon after pollination. The fruit is a one-seeded drupe which ripens fully in the autumn and is black or bluish in maturity and green earlier in the season. FRUIT TREES 57 Fig Ficus carica L.
Morphology and Evolution of Vascular Plants by Ernest M. Gifford