A Field Guide to the Families and Genera of Woody Plants of by Alwyn H. Gentry PDF

By Alwyn H. Gentry

ISBN-10: 0226289443

ISBN-13: 9780226289441

Be aware: Scanned PDF with ScanTailor cleanup and Adobe Clearscan OCR

To comprehend nearly any a part of the tropical rain forest's fabulously complicated net of existence, one needs to first discover ways to establish a bewildering array of crops. Alwyn Gentry's landmark ebook, accomplished ahead of his tragic loss of life in 1993, is the one box consultant to the approximately 250 households of woody vegetation within the so much species-rich zone of South America.

As a consummate box researcher, Gentry designed this consultant to be not only entire, but additionally effortless to exploit in rigorous box stipulations. in contrast to many box courses, which depend for his or her identifications on plants and end result which are purely current in the course of convinced seasons, Gentry's booklet makes a speciality of characters akin to bark, leaves, and smell which are current year-round. His advisor is stuffed with transparent illustrations, step by step keys to identity, and a wealth of formerly unpublished data.

All biologists, flora and fauna managers, conservationists, and govt officers fascinated with the tropical rain forests will want and use this box guide.

Alwyn Gentry used to be one of many world's preferable specialists at the biology of tropical vegetation. He used to be senior curator on the Missouri Botanical backyard, and used to be a member of Conservation International's interdisciplinary swift overview software (RAP) group, which inventories the biodiversity of the main threatened tropical parts. From 1967 to 1993 he amassed greater than 80,000 plant specimens, a lot of them new to technological know-how.

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Extra info for A Field Guide to the Families and Genera of Woody Plants of North west South America : (Colombia, Ecuador, Peru) : With Supplementary Notes)

Example text

Menispermaceae - At least one menisperm has a 3-foliolate leaf; the anomalous stePJ cross section with concentric rings is distinctive. llD. Leaves palmately componnd (and alternate) IIDa. Trees Palmae - Fan palms are our only arborescent plants with palmately compound leaves with parallel-veined segments. Key to Families Rutaceae - Some species of Angostura and Raputia (and extralimi­ Esenbeckia and Casimiroa) have palmately compound leaves, characterized by the punctations and more or less pungent or citruslike odor.

Look for: serrate or serrulate margins (Hippocrateaceae) ; petiolar glands and/or seri­ ceous petiole (and/or other p arts) with T-shaped trichomes (Malpighiaceae); 3-veined from base (Strychnos, Coriaria, Melasto­ mataceae), or above base (Valerianaceae and Compositae [usually aromatic] ); milky latex (Apocynaceae and Asclepiadaceae, the for­ mer usually woody, the latter mainly herbaceous); spines (several rubiacs mostly with paired spines from leaf-axils) ; Combretum, sometimes with branch spines on stem; Pisonia with leaves mostly on short-side branches; swollen jointed nodes (acanths, amaranths, Gne tum, the latter with [slow] resin from cut stem); asperous surface (Petrea [Verbenaceae]), Prionostemma (Hippocrateaceae, some Compositae).

Most 3-foliolate Connaraceae have alternate basal leaf­ lets (rare in legumes). Connaraceae leaflets mostly have finely promi­ nulous venation and a characteristic chartaceous texture that is subtley different from those of l egume climbers. Urvillea, Thinouia, Lophostigma, and a few species Serjania and Paullinia have uniformly 3-foliolate leaves ; they are Sapindaceae of - characterized by the bifurcating inflorescence-derived Sapindaceae tendril and usually irregularly coarsely toothed m argin .

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A Field Guide to the Families and Genera of Woody Plants of North west South America : (Colombia, Ecuador, Peru) : With Supplementary Notes) by Alwyn H. Gentry

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