. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. 0 809, Elbes aureum (Missouri Currant); stamons and petals perig.; ovary inferior. SIO, Saxi- fraga Virginieusia; half superior. 811, Puclisia gi'acilis (Ear-drop); inferior; stamens ejApe- taloua. 46T. In the oases above cited, it is oommonly taught that the receptacle is lo- cated at the base of the ovary, and that all the organs thence arising are adherent to its sides. Another doctrine is also taught, viz., that the recep
. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. 0 809, Elbes aureum (Missouri Currant); stamons and petals perig.; ovary inferior. SIO, Saxi- fraga Virginieusia; half superior. 811, Puclisia gi'acilis (Ear-drop); inferior; stamens ejApe- taloua. 46T. In the oases above cited, it is oommonly taught that the receptacle is lo- cated at the base of the ovary, and that all the organs thence arising are adherent to its sides. Another doctrine is also taught, viz., that the receptacle itself may be elevated and become perigynous or epigynous, or, in other words, the ovary may be imbedded in the foot-stalk. That it is so in the rose (289) we can hardly doubt. The so-called calyx-tube of the cherry, peach, is certainly an analogous structure, more expanded, and so is the more contracted " calyx tube" of the apple, pome- granate. The analogy extends throughout the Boaeworts, and perhaps still further. 468. Calyx half-superior. Calyx superior or free, ovary inferior or free, are all phrases of the same import as calyx hypogynous. Be- tween the two conditions, calyx superior and calyx inferior, there are numerous gradations, of which one only is defined, to wit, calyx half- superior, as exemplified in the mock orange (and 3107.) 469. Special forms op the perianth, whether calyx, corolla, or both, have been named and described. We may arrange them thus:— POLTPBTALOUS, regulo/r—Cruciform, rosaceous, caryophyllaoeous, liliaceous. Ir- regular—papilionaceous. MoNOPBTALons, regular mostly—rotate, cup-shaped, campanulate, uroeolate, fiin- nel-form, salver-form, tubular., Irregular—]igalaXB, labiate, orchidaceous. 470. Cruciform (crux, a cross) or cross-shaped, implies that four long clawed, spreading petals stand at right angles to each other, as in the flowers of the mustard family (Cruciferse) in general. 471. EosACEous, rose-lite ; a flower
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