. Class-book of botany : being outlines of the structure, physiology, and classification of plants ; with a flora of the United States and Canada . Botany; Botany; Botany. Cypsela (incorrectly called acheuium) of the Composite, with various forms of pappus. 828, Eclipta procumbens, no pappus. 329, Ambrosia trifida. 330,Helianthus grosse-serratus, i>appuB 2-awned. 331, Ageratum conizoidcs, pappus of five scales. 332, Mulgedium, capillary pappus —cypsela slightly rostrate. 3-33, Lactuca elongata, rostrate cypsela. 486. Other keductions. Again, the calyx or the limb of the calyx is reduced to
. Class-book of botany : being outlines of the structure, physiology, and classification of plants ; with a flora of the United States and Canada . Botany; Botany; Botany. Cypsela (incorrectly called acheuium) of the Composite, with various forms of pappus. 828, Eclipta procumbens, no pappus. 329, Ambrosia trifida. 330,Helianthus grosse-serratus, i>appuB 2-awned. 331, Ageratum conizoidcs, pappus of five scales. 332, Mulgedium, capillary pappus —cypsela slightly rostrate. 3-33, Lactuca elongata, rostrate cypsela. 486. Other keductions. Again, the calyx or the limb of the calyx is reduced to a mere rim, as seen in the TJmbelliferse. In tho amenta- ceous orders the whole perianth diminishes to a shallow cup, as in tho poplar, willow, or altogether disappears, as in the birch, ash, lizard-tail. (264-26Y). 48*7. Set^, meaning bristles in general, is a term specifically used to denote the reduced perianth of the sedges. In the bog-rush (Scirpus) there is, outside the stamens, a circle of six setse, which doubtless rep- resent a 6-leaved perianth. In the cotton-grass (Eriphorum) tlic setae are multiplied and pei'sistent on the fruit, becoming long and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wood, Alphonso, 1810-1881. New York : A. S. Barnes & Burr
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisher, booksubjectbotany
