The book Botany for High Schools was written by author Atkinson George Francis Here you can read free online of Botany for High Schools book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Botany for High Schools a good or bad book?
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The branches grow at their base and con- tinue to divide into short cells, raising the older cells farther and Fig. 233- Willow mildew; bit of mycelium with erect conidipphores bearing chains of conidia; conidium at left germinating. Fig. 234- Fruit of willow mildew, showing hooked appendages. Genus Uncinula. Figs. 234, 235. Perithecia of two pow- dery mildews, showing escape of asci con- sphaera. Taining the spores from the crushed fruit bodies. Fig. 235. Fruit body of an- other mildew with di...chotomous append- ages. Genus Micro- arther away from the surface. At the same time the older cells swell out somewhat so that they appear like chains of beads, or small barrel-shaped spores or conidia. The older ones separate and fall upon the surface of the leaf or stem, etc. , giving a pow- dery appearance. These conidia are carried to other plants or other parts of the same plant, there spreading the disease. FUNGI, SAC FUNGI 291 439. The ascus stage, or perfect stage. This is developed after the formation of conidia, as the result of a sexual process ending in the formation of minute brown or blackish fruit bodies.
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