. 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. INFLORESCENCE. 73 themselves umbels, as in caraway and most of the Umbeliferse, a com- pound umbel is produced. Such secondary umbels are called umbellets and the primary pedicels, rays. 352. The panicle is a compound inflorescence formed by the irregu- lar branching of the pedicels of the raceme, as in oats, spear-grass, Catalpa. 353. A thtrse is a sort of compact, oblong, or pyramidal panicle, as in lilac, grape. 354. A head
. 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. INFLORESCENCE. 73 themselves umbels, as in caraway and most of the Umbeliferse, a com- pound umbel is produced. Such secondary umbels are called umbellets and the primary pedicels, rays. 352. The panicle is a compound inflorescence formed by the irregu- lar branching of the pedicels of the raceme, as in oats, spear-grass, Catalpa. 353. A thtrse is a sort of compact, oblong, or pyramidal panicle, as in lilac, grape. 354. A head or capitclum is a sort of reduced umbel, having the flowers all sessile upon the top of the peduncle, as in the button snake- root, button-bush, clover. But the more common examples of the capitulum are seen in the Compos- ite, where the summit of the peduncle, that is, the receptacle, is dilated, bear- ing the sessile flowers above, and scale- like bracts around, as an involucre. 355. The capitulum of the Composite is often called a com- pound flower from its resem- blance, the involucre answering to a calyx, the rays to the corolla. The flowers are called florets, those of the outer circle, florets of the ray, generally differing in form from those of the cen- tral portions, the florets of the disk. 356. Of terminal inflores- cence the following varieties are described: cyme, fascicle (verticilaster), glomeruli. 21S. Vernonia fasciculate; flowers in a discoid head with an imbricated involucre. 211, A single flower remaining on the receptacle. 212, A fruit crowned with the pappus. 213, Mulgo- dium ; a head. 214, A single flower remaining on the receptacle. 215, A fruit with 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
