. The botanical class-book, and flora of Pennsylvania, designed for seminaries of learning and private classes. f a mucous fluid called the fovilla, to theovule. ^ 196. The Fovilla consists of minute particles of mole- PISTIL. 65 eules of a spherical or oblong form, suspended in a fluid pos-sessed of tremulous motion. 197. The Disk is a ring, either entire orlobed, or a rowof fleshy bodies, situated between the bases of the stamensand pistils: It is said to be hypogynous, when it surroundsthe base of the ovary, as in the Peony) when it adheres toand lines the tube of the calyx, perigynouSj as
. The botanical class-book, and flora of Pennsylvania, designed for seminaries of learning and private classes. f a mucous fluid called the fovilla, to theovule. ^ 196. The Fovilla consists of minute particles of mole- PISTIL. 65 eules of a spherical or oblong form, suspended in a fluid pos-sessed of tremulous motion. 197. The Disk is a ring, either entire orlobed, or a rowof fleshy bodies, situated between the bases of the stamensand pistils: It is said to be hypogynous, when it surroundsthe base of the ovary, as in the Peony) when it adheres toand lines the tube of the calyx, perigynouSj as in Rosaceousplants; and when it appears at the top of the ovary, wherethe calyx is superior, it is cpigynoits, as in the Cornus, Arabia;in this case, when confluent with the base of the style, it iscalled the styhpodium. PISTIL. 198. The Pistils (Fig. 100, c.) occupy the centre of theflower, sometimes numerous, but often only one; collectively,they are called Gynaceum, (guna, a woman, pistil, andoi/cos, a house). A pistil is composed of three parts—the stigma, the style,and the ovary. 100. 101. 102. 103,. Fig. 100. Plstd of a Whortleberry; e, the stigma; b. ?tyle; G,tln epigynousdisk; e, perpendicular section of the orary, combined with the adherent (superior)calyx; cZ, the placentae with the ovules. Fig. 101. the gynrecium of a flower with 5pistils showing the carpels and styles distinct; e, cress section of the sanie; Fig. 10:,the carpels united and the styles distinct;/, cross section of the same; Fig. IOC,both carpels and styles united; g, cross section of the same. 199. The Stigma (Fig. 100, c), is the upper portion, orextremity of the style, usually globular, but varies consider-able in different species. It is of a glandular nature, usuallycovered with a viscid fluid, and is destitude of a cuticle; being PISTIL. an essential organ in reproduction; and it exercises-a peculiarid on the fecundatory pollen. It is called sessile when;•anting; in which case it rests i
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Keywords: ., bookcentury1800, bookdecade, booksubjectbotany, booksubjectplants
