. Leaves and flowers : or, Object lessons in botany with a flora : prepared for beginners in academies and public schools . Botany. 220 THE FLORA. ant, when all the florets areligulate (TFig. 504); discoid, when all the florets are tnhular, there being no rays (Fig. 509). The receptacle is the broad top of the stalk on which the florets sit (Fig. 499). It is chaffy when there are scales or bracts growing among the florets, and naked when none. The tubular florets constitute the disk, and the ligulate, if any, the raAj ; the disk is generally yellow, whUe the ray is about as often cyanic (that
. Leaves and flowers : or, Object lessons in botany with a flora : prepared for beginners in academies and public schools . Botany. 220 THE FLORA. ant, when all the florets areligulate (TFig. 504); discoid, when all the florets are tnhular, there being no rays (Fig. 509). The receptacle is the broad top of the stalk on which the florets sit (Fig. 499). It is chaffy when there are scales or bracts growing among the florets, and naked when none. The tubular florets constitute the disk, and the ligulate, if any, the raAj ; the disk is generally yellow, whUe the ray is about as often cyanic (that is, blue, red, white, or any color except yellow) as Fig 408. A Sunflower,—hrail radiate. 9. Vertical secition of the head, showing the scales of the involucre, and a single disk-flower remaining upon the convex receptacle. Fig. 800. A per- fect magnified, showing the acheninm, the 3 awna of the pappus, the 5-toothed tu- bular corolla, the 6 stamens united around tliebninched style, and the chaff-scale at base. 1. Head (radiate) of Solldago cassia. 2. A pistillate, ligulate flower of the ray. 8. A perfect disk-flower. 4 A (radiant) head of Dandelion. 6. A perfect, ligulate flower. 6. Achenlum, with its long beak and feathery pappus. 7. A (radiant) head of Nabalus altissimua. 8. A flower. 9 L'ippa (Burd ok), head discoid. 10. A flower. 11. One of the hooked scales. 12. A (discoid) head of Eupatorium purpureum. 13. A flower. 14. Ambrosia (Pigweed). 16. Staminate head enlarged. 16. PiBtillut involucre enlarged. 17. The fertile 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. A. Barnes
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectbotany, bookyear1869
