. The Botanical Class-Book and Flora of Pennsylvania. 7. A Drupe or stone fruit (Fig. 120,) is a one-celled, oneor two-seeded simple fruit, indehiscent, with a hard and longendocarp, covered with the fleshy sarcocarp, which is alsocovered with the epicarp, as in the Peach, Plum, and name, though strictly applicable only to fruits of thiskind, is extended to all fruits of similar texture resulting froma compound ovary, as in the Walnut, and even to those ofseveral bony cells enclosed in pulp, as in the Buck-thorn;the latter, however, are generally called drupaceous. 8. A Nut is a ha
. The Botanical Class-Book and Flora of Pennsylvania. 7. A Drupe or stone fruit (Fig. 120,) is a one-celled, oneor two-seeded simple fruit, indehiscent, with a hard and longendocarp, covered with the fleshy sarcocarp, which is alsocovered with the epicarp, as in the Peach, Plum, and name, though strictly applicable only to fruits of thiskind, is extended to all fruits of similar texture resulting froma compound ovary, as in the Walnut, and even to those ofseveral bony cells enclosed in pulp, as in the Buck-thorn;the latter, however, are generally called drupaceous. 8. A Nut is a hard, indehiscent fruit, produced from anovary of two or more cells, with one or more ovules in each,all but a single ovule and cell having disappeared during itsgrowth. It differs from the drupe in being seated in a kindof persistent involucre called a cupule, as in the Chestnut, Oak,Hazle, and Beach. 9. An Achenium (Fig. 121,) is a small, dry, indehiscent,one-seeded pericarp, as in the Ranunculus. It is sometimesterminated by a plumose and persisten
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