. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. THE FLOWER. 47. is polypetalous; very irregular and resembles more or less remotely a butterfly, and for this reason it has received the name Papilionaceous (ILat. papilio, butter- fly) ; the upper and larger petal is called the banner, or vex- illum (Fig. , v); the two side petals are called the wings, or alcB (Fig. 107, a); and the two anterior ^°^ ones, generally cohering slightly (and enclosing the stam
. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. THE FLOWER. 47. is polypetalous; very irregular and resembles more or less remotely a butterfly, and for this reason it has received the name Papilionaceous (ILat. papilio, butter- fly) ; the upper and larger petal is called the banner, or vex- illum (Fig. , v); the two side petals are called the wings, or alcB (Fig. 107, a); and the two anterior ^°^ ones, generally cohering slightly (and enclosing the stamens and pistil), are called the keel (Fig. 107, k). The flowers of the Cress, Mustard, Cabbage, etc., have four petals, arranged two and two opposite, somewhat like a cross, and they are said to be cruciform (Lat. crux, cross; Fig. 108). 58. A conspicuous irregularity in the flower is caused by the production of appendages of various kinds. One petal in the Violet is prolonged so as to form a spur; this organ is tubular, and generally con- tains Nectar, or los sweet substance secreted by the flower. One species of Dicentra 1"'' is two-spurred. All the petals of Fig. 106. A head of flowers of Heliopsis : in, involucre ; , disk-flowers ; /zj-, ray-flowers; c/i, chaff"; ac/t, achemia. Fig. 107. A Papilionaceous flower of Pea: V, vexillum; a, wings ; i, keel. Fig. 103. A Cruciform 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 Kellerman, William Ashbrook, 1850-1908. Philadelphia, J. E. Potter and Company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1883
