EEB337 20121120.docx

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Department
Ecology & Evolutionary Biology
Course
EEB202H1
Professor
T.Dickinson
Semester
Fall

Description
EEB337 20121120 Fabaceae “legumes” and indehiscent fruits Fabales: - Fabaceae is within the Fabales - 4 families in the order Fabaceae: - Alternative name: Leguminosae (old name, family of legumes) - Older name (not accepted now): Papilionaceae - 730 genera/ 19,400 spp.  Big family in terms of its genera and larger family in terms of its species - We will use three subfamilies:  Faboideae  Caesalpiniodeae  Mimosoideae Fabaceae recognition: - Compound, stipulate leaves with leaflets entire, often with pulvini;  pulvini - Flowers with petals usually free, gynoecium a single pistil arising from one gynoecial primodium; - Fruits usually dry, elongate, containing seeds that are often markedly flattened. Fabaceae: - Often with root nodules containing nitrogen-fixing bacteria (Rhizobium)  Host to symbiotic nitrogen-fixing bacteria - Many economically important plants provide:  Protien0rich seeds  Green manure  Animal fodder - Domesticated in various centers in which agriculture originated:  Fertile crescent (pea, lentil, chickpea)  China (soybean adzuki bean)  India (black, green, and red gram)  Central and South America (common bean
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