. 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 nchenium) of the Composite, with various forms of pappus. 828, Ecli'pta procumbens, no pappus. 329, Ambrosia trifida. 330,IIelianthu» grosM-semtns, 2-awned. 331, Ageratum conizoides, pappus of five scales. 882, Mulgedium, capillary pappni —cypsela slightly rostrate. 333, Lactuca elongata, rostrate cypsela. 486. Other reductions. Again, the calyx or the limb of the calyx is reduced to a mere
. 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 nchenium) of the Composite, with various forms of pappus. 828, Ecli'pta procumbens, no pappus. 329, Ambrosia trifida. 330,IIelianthu» grosM-semtns, 2-awned. 331, Ageratum conizoides, pappus of five scales. 882, Mulgedium, capillary pappni —cypsela slightly rostrate. 333, Lactuca elongata, rostrate cypsela. 486. Other reductions. Again, the calyx or the limb of the calyx is reduced to a mere rim, as seen in the Uinbelliferse. In the amenta- ceous orders the whole perianth diminishes to a shallow cup, as in the poplar, willow, or altogether disappears, as in the birch, ash, lizard-taii. (264-2G7). 487. , 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 scta\ which doubtless rep- resent a 6-leaved perianth. In the cotton-grass (Eriphornm) t:ie setae are multiplied and persistent 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, booksubjectbotany, bookyear1861
