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

By Alwyn H. Gentry

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To comprehend virtually 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 vegetation. Alwyn Gentry's landmark ebook, accomplished prior to his tragic loss of life in 1993, is the single box advisor to the approximately 250 households of woody crops within the such a lot species-rich zone of South America.

As a consummate box researcher, Gentry designed this advisor to be not only accomplished, but additionally effortless to take advantage of in rigorous box stipulations. not like many box publications, which count for his or her identifications on plant life and culmination which are basically current in the course of sure seasons, Gentry's ebook makes a speciality of characters comparable to bark, leaves, and smell which are current year-round. His consultant is stuffed with transparent illustrations, step by step keys to id, and a wealth of formerly unpublished data.

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

Alwyn Gentry was once one of many world's most well known 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 speedy evaluation application (RAP) crew, which inventories the biodiversity of the main threatened tropical components. From 1967 to 1993 he accrued greater than 80,000 plant specimens, a lot of them new to technology.

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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)

Sample text

Sabiaceae Ophiocaryon has smooth, coriaceous, olive-grayish­ drying leaflets, very irregular leaflet numbers (some leaves often 1 (-2)-foliolate), and thickened flexed petiolules and often subwoody petiole bases. , Tapirira) that also lack obvious late� are very nondescript and especially easy to confuse with Trichilia. Often there is at least a faint trace of a mangolike odor. The commonest species dries with a characteristic reddish tint. Anacardiaceae - Key to Families 20 Simaroubaceae Nonbitter simaroubs are often characterized by leg umelike cyli ndrical pulvinuli.

Key II 17 (Sapindaceae) - A very few PauUinia species, all lianas, have branch­ derived spines or short spines on angles of stem; characterized by milky latex. (Burseraceae) Bursera orinocensis, distinctive in its strongly pun­ gent aroma, has branch spines. - Palmae Several pinnate-leaved palm genera have spiny trunks and/or leaves. - Cycadaceae - The majority of Zamia species have short spines on the petiole and/or rachis. IIBh. Latex (rare ill compound-leaved taxa) Sapindaceae Latex present in most lianas (characterized also by bifurcating inflorescence-derived tendril and frequently compound wood) but never in trees.

Leaflets with parallel venation Palmae The only woody monocots with pinnately compound leaves, the leaf segments unmistakable in their parallel venation. - · Key II 15 Cycadaceae - Similar only to palms from which the leaflets differ i n being more coriaceous an d having the parallel leaflet veins all equal; often +/- spiny with spines shorter and thicker-based than in pinnate­ leaved spiny palms. 1/Bb. Rank odor Juglandaceae (montane) - Usually serrate leaflets with characteristic walnut odor.

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