The origin of floral structures through insect and other agencies . Fig. 62,—Inflorescence of Connis florida,?n ith luur white petaloid bracts. Fig. 63.—Inflorescence of Darunnia, withcoloured petaloid bracts. or less staminoid character. This is rare, but it has beennoticed in Abies excelsa* A substitution of anthers forbracts has been seen in. Melianthus major,-f concerning whichSig, Licopoli remarks that the flowers of chiefly the terminalracemes were impeifect, the summit of the floriferous axisbearing a tuft of perfect and imperfect anthers the petalsand the two carpels of the flower havi
The origin of floral structures through insect and other agencies . Fig. 62,—Inflorescence of Connis florida,?n ith luur white petaloid bracts. Fig. 63.—Inflorescence of Darunnia, withcoloured petaloid bracts. or less staminoid character. This is rare, but it has beennoticed in Abies excelsa* A substitution of anthers forbracts has been seen in. Melianthus major,-f concerning whichSig, Licopoli remarks that the flowers of chiefly the terminalracemes were impeifect, the summit of the floriferous axisbearing a tuft of perfect and imperfect anthers the petalsand the two carpels of the flower having been atrophied orarrested. Fig. 64 represents an involucral bract of Nigella, bearingan anther on one side of it; while Fig. 65, a, is that of aglume of Lolium perenne with an anther. That bracts shouldever assume a pistilloid character is, a priori, still moreunlikely, as being further removed from the central organ ofthe flower. Dr. M. T. Masters has, however, described % a * Teratology, p. 192. f Bull. Soc. de Eot. Fr., Rev. hih., t. xiv., p. Jo
Size: 1516px × 1648px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectfertili, bookyear1888
