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

Word: Scanned PDF with ScanTailor cleanup and Adobe Clearscan OCR

To comprehend virtually any a part of the tropical rain forest's fabulously complicated net of existence, one needs to first learn how to determine a bewildering array of vegetation. Alwyn Gentry's landmark booklet, accomplished in advance of his tragic dying in 1993, is the one box advisor to the approximately 250 households of woody crops within the so much species-rich quarter of South America.

As a consummate box researcher, Gentry designed this consultant to be not only accomplished, but additionally effortless to exploit in rigorous box stipulations. not like many box publications, which depend for his or her identifications on vegetation and culmination which are in basic terms current in the course of definite seasons, Gentry's publication makes a speciality of characters similar 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 His advisor is stuffed with transparent illustrations, step by step keys to identity, and a wealth of formerly unpublished data.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 involved in the tropical rain forests will desire and use this box guide.

Alwyn Gentry used to be one of many world's premier specialists at the biology of tropical crops. He was once senior curator on the Missouri Botanical backyard, and used to be a member of Conservation International's interdisciplinary speedy evaluate software (RAP) staff, 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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Additional info for A Field Guide to the Families and Genera of Woody Plants of North west South America : (Colombia, Ecuador, Peru) : With Supplementary Notes)

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Lacks apparent latex (Tovomitopsis, some Chrysochlamys), but then with the typical hollowed-out Gutti­ ferae petiole bases that form a protective chamber for the developing bud; a few Visrnia species (which lack the typical hollowed petiole base) may not always show the orange latex but there is always a hint of orange color under the bark where the latex should be. (Eiaeocarpaceae) - Sloanea is characterized by a mixture of alternate and opposite leaves, even on same branch, almost never uniformly opposite; also very distinctive in the flexed but nonpulvi­ nate petiole apex and strictly pinnate venation.

IIBg. SpitJes - (Rare ill simply pim1ate taxa) Leguminosae - Machaerium, mostly Hanas, usually only with paired stipular spines and usually with red latex. Rutaceae Zanthoxylum, always trees in Neotropics; thick spines on trunk typical, also often with spines on petioles and leaflets. - 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.

Also, an important warning: There is a common epiphyllous leafy liverwo rt with a rather lico rice ­ like smell. Learn that anise odor well and eliminate it from consi­ deration. Frequently a twig split longitu din a lly will g ive off a more easily detectable odor than the leaves themselves. In some Lauraceae, with little or no leaf odor, th e bark slash is a roma tic ; in others the reverse may be true. - - Families with Ranalean odors All with completely entire margins except for a very few somewhat lobed-leaved (but never serrate) species.

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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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