Download 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 nearly any a part of the tropical rain forest's fabulously complicated net of lifestyles, one needs to first discover ways to establish a bewildering array of crops. Alwyn Gentry's landmark publication, accomplished earlier than his tragic dying in 1993, is the one box consultant to the approximately 250 households of woody crops within the such a lot species-rich area 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 plants and culmination which are merely current in the course of sure seasons, Gentry's e-book specializes in characters equivalent to bark, leaves, and scent which are current year-round. His consultant is stuffed with transparent illustrations, step by step keys to identity, and a wealth of formerly unpublished data.

All biologists, natural world managers, conservationists, and govt officers concerned about the tropical rain forests will desire and use this box guide.

Alwyn Gentry used to be one of many world's superior specialists at the biology of tropical crops. He was once senior curator on the Missouri Botanical backyard, and was once a member of Conservation International's interdisciplinary fast overview application (RAP) group, which inventories the biodiversity of the main threatened tropical parts. From 1967 to 1993 he amassed greater than 80,000 plant specimens, lots 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)

Example text

Apparently a few people don ' t taste the bitter principal of Simaroubaceae; check your taste buds on a known specimen. ). - 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.

Milky latex Apocynaceae Abundant milky latex is unique to this and the following family among Hanas or vines with opposite leaves. The two families are very difficult to distinguish vegetatively and are some­ times united into the same family. Leaves usually with characteristic glands on midrib above, at least at base of midrib. In general woody Hanas are apocynacs while herbaceous climbers are mostly asclepiads. - Asclepiadaceae Essentially a herbaceous version of Apocynaceae and often indistinguishable vegetatively.

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.

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