Jim Bidlack - BIO 1304 GENERAL BOTANY Lecture 3 - General plant morphology I. Typical plant morphology A. Flowering plants (angiosperms) - Phylum Anthophyta II. Vegetative organs A. Leaves 1. Primary site of photosynthesis (energy) 2. Primary site of organic synthesis 3. Types of leaves a) Simple (single blade) - Osage orange b) Scale - Cedar c) Needle - Pine d) Whorled - Chittamwood e) Compound - Pecan, locust 1) Distinguishing feature between simple and compound a) Look for axillary buds - they do not occur in axils of leaflets 2) Types of compound leaves a) Pinnately (with rachis - "stemlette") - locust b) Palmately (like a palm or hand) - virginia creeper 4. Variations in leaf shape a) Entire (smooth) - Redbud b) Dentate (toothed) - Elm c) Lobed (deeply indented) - Post Oak 5.
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