By Alwyn H. Gentry

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To comprehend virtually any a part of the tropical rain forest's fabulously advanced internet of existence, one needs to first discover ways to determine a bewildering array of vegetation. Alwyn Gentry's landmark publication, accomplished in advance of his tragic loss of life in 1993, is the one box advisor to the approximately 250 households of woody crops within the so much species-rich area of South America.

As a consummate box researcher, Gentry designed this consultant to be not only entire, but in addition effortless to take advantage of in rigorous box stipulations. not like many box courses, which count for his or her identifications on plants and culmination which are in simple terms current in the course of yes seasons, Gentry's ebook makes a speciality of characters akin 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 His consultant is stuffed with transparent illustrations, step by step keys to id, and a wealth of formerly unpublished data.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 govt officers serious about the tropical rain forests will want and use this box guide.

Alwyn Gentry was once one of many world's most advantageous specialists at the biology of tropical crops. He used to be senior curator on the Missouri Botanical backyard, and used to be a member of Conservation International's interdisciplinary speedy evaluate software (RAP) group, which inventories the biodiversity of the main threatened tropical components. From 1967 to 1993 he accumulated 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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IIIAa. T-shaped trichomes Malpighiaceae - T-shaped trichomes ( = malpighiaceous hairs) give rise to a macroscopically sericeous look, especially on petioles (and buds) and are definitive among plants with opposite leaves; not al­ ways obvious to naked eye, if in doubt use a hand lens. Several genera have pair of stipulelike appendages (glands) on petiole or pair of thicker glands near petiole apex. Stems sometimes fragment into cables, unlike combretacs and ·hippocrats. Sometimes with watery submilky latex approaching that of some ascleps in texture.

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. - 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.

Tendrils Passifloraceae, Cucurbitaceae, Vitaceae, Smilacaceae, Rhamna­ ceae, (Polygonaceae), Leguminosae IVBb. 9laceae, (Malvaceae), Loasaceae, Compositae, (B asellaceae), (Boraginaceae) (3) Deeply lobed and/or peltate Tropaeolaceae , Euphorbiaceae , (Solanaceae ) , (Caricaceae ) , (Menispermaceae), (Aristolochiaceae) (4)" Primitive odor Aristolochiaceae, Hemandiaceae, (Am1onaceae ), Lauraceae (5) Petiolar or lamina base glands Euphorbiaceae (6) Palmately 3(-5)-veined S terculiaceae , Menispermaceae, Dioscoreaceae , Ericaceae , (Urticaceae), Rhamnaceae, Compositae, Basellaceae, (Olacaceae), (Leguminosae), Euphorbiaceae (7) Latex Convolvulaceae, Moraceae; Campanulaceae, (Euphorbiaceae), (Caricaceae), (Olacaceae) (8) Spines (Ulmaceae), Cactaceae, Phytolaccaceae, Polygalaceae, Solanaceae (9) None of the above Polygonaceae , Marcgraviaceae, Ericaceae, D ichapetalaceae , Icacinaceae, (B asellaceae) , Compositae , Plu m b aginace ae, Solanaceae, Convolvulaceae, Polygalaceae , (Phytolaccaceae) , B oraginaceae, Amaranthaceae, (Olacaceae ) , (Dilleniaceae ) , (Onagraceae) KEY TO FAMILIES The families may be divided into four main vegetative groups: I.

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