. Introduction to botany. Botany. 56 Introduction to Botany. or Missouri Currant, Flowers several in leafy-bracted racemes, yellow, spicy- scented, i to I inch long. Calyx tube cylindric, about 3 times as long as the lobes. Fruit smooth, yellow, becoming black. Along streams. ROSACEA. Rose Family. Herbs, trees, or shrubs with alternate, mostly stipulate, leaves. Flowers regular; sepals 5, often subtended by as many sepal-like bractlets; petals 5, apparently inserted on the calyx; stamens usually indefinite, apparently inserted on the calyx (expanded border of the base of the receptacle). Pisti
. Introduction to botany. Botany. 56 Introduction to Botany. or Missouri Currant, Flowers several in leafy-bracted racemes, yellow, spicy- scented, i to I inch long. Calyx tube cylindric, about 3 times as long as the lobes. Fruit smooth, yellow, becoming black. Along streams. ROSACEA. Rose Family. Herbs, trees, or shrubs with alternate, mostly stipulate, leaves. Flowers regular; sepals 5, often subtended by as many sepal-like bractlets; petals 5, apparently inserted on the calyx; stamens usually indefinite, apparently inserted on the calyx (expanded border of the base of the receptacle). Pistils i-many, distinct or united. Some of our most beautiful flowers and best fruits belong to this Longitudinal diagrams of type flowers of the Rosaceae. A, plum; B, rose; C, strawberry. Ovary superior or half superior. Ripened pistil a drupe or drupelet. Fruit consisting of a single pistil. Fruit consisting of several pistils cohering over an elongated receptacle. Ripened pistil a few- to several-seeded pod. Pistils 5-8; pods not Inflated. Prunus I. RUBUS IV. Spir^a II. Pistils 1-5; pods inflated. Phvsocarpus III. Ripened pistil an achene. Carpels distinct and numerous on a convex receptacle, which becomes fleshy and edible in fruit. Fragaria V. Carpels distinct on a dry receptacle; styles not lengthening in fruit; bracts conspicuous at the sinuses of the calyx. Potentilla VI. Carpels 2-6 on a short receptacle; styles not lengthening in fruit; bracts at the sinuses of the calyx minute or wanting. Waldstetnia VIT. Carpels numerous on a dry conical or cylindrical receptacle; style persisting as a hairy or jointed tail to the achene. Geum VIII. Ovary inferior. Pistils several, Inclosed in an urn-shaped receptacle. Rosa IX. Pistil single, compound, its cells as many as the styles (2-5). Fruit a pome; ovary 5-ceIled, its carpels 2-seeded. Pyrus X. Fruit a small, berrylike pome; ovary becoming lo-celled, its carpels 2-seeded. Amelanchier XI. Fruit a small, drupelike pome with
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1902
