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Anther of a prunella plant.

Prunella anther

Anther of a prunella plant.

An illustration of a chiton's excretory and reproductive organs. O, Ovary; P, Pericardium; N, Nephridium; r, rectum; and Br, Ctenidia.

Chiton Excretory and Reproductive Organs

An illustration of a chiton's excretory and reproductive organs. O, Ovary; P, Pericardium; N, Nephridium;…

An illustration of a chiton's excretory and reproductive organs. O, Ovary; P, Pericardium; N, Nephridium; r, rectum; Cl, Cloacal or pallial chamber of Neomaniae and Chaetoerma; and Br, Ctenidia.

Chiton Excretory and Reproductive Organs

An illustration of a chiton's excretory and reproductive organs. O, Ovary; P, Pericardium; N, Nephridium;…

An illustration of a chiton's excretory and reproductive organs. O, Ovary; P, Pericardium; N, Nephridium; r, rectum; and Cl, Cloacal or pallial chamber of Neomaniae and Chaetoerma.

Chiton Excretory and Reproductive Organs

An illustration of a chiton's excretory and reproductive organs. O, Ovary; P, Pericardium; N, Nephridium;…

An illustration of a chiton's excretory and reproductive organs. O, Ovary; P, Pericardium; N, Nephridium; r, rectum; and Cl, Cloacal or pallial chamber of Neomaniae and Chaetoerma; Br, Ctenidia; g, External aperture of the gential duct of Chiton; and u, External aperture of nephridium.

Chiton Excretory and Reproductive Organs

An illustration of a chiton's excretory and reproductive organs. O, Ovary; P, Pericardium; N, Nephridium;…

The inside of a gooseberry, showing the reproductive seeds that are immersed in the placenta.

Gooseberry

The inside of a gooseberry, showing the reproductive seeds that are immersed in the placenta.

"The Hesperidium is a fleshy fruit, in which the epicarp and mesocarp form a thick rind, and the endocarp projects inward, forming triangular divisions, in which pulpy cells are developed, which surround the seeds."—Darby, 1855

Hesperidium

"The Hesperidium is a fleshy fruit, in which the epicarp and mesocarp form a thick rind, and the endocarp…

View of a section of the ovary of the cat. Labels: 1, outer covering and free border of the ovary; 1', attached border; 2, the ovarian stroma, presenting a fibrous and vascular structure; 3, granular substance lying external to the fibrous stroma; 4, blood-vessels; 5, ovigerms in their earliest stages occupying part of the granular layer near the surface; 6, ovigerms which have begun to enlarge and to pass more deeply into the ovary; 7, ovigerms round which the Graafian follicles and tunica granulosa are now formed and which have passed somewhat deeper into the ovary and are surrounded by the fibrous stroma; 8, more advanced Graafian follicle with the ovum imbedded in the layer of cells constituting the proligerous disc; 9, the most advanced follicle containing the ovum; 9', a follicle from which the ovum has accidentally escaped; IO, corpus luteum.

Ovary of the Cat

View of a section of the ovary of the cat. Labels: 1, outer covering and free border of the ovary; 1',…

Section of the ovary of a cat. Labels: A, germinal epithelium; B, immature Graafian follicle; C, stroma of ovary; D, vitelline membrane containing the ovum; E, Graafian follicle showing lining cells; F, follicle from which the ovum has fallen out.

Ovary of the Cat

Section of the ovary of a cat. Labels: A, germinal epithelium; B, immature Graafian follicle; C, stroma…

"The Pepo is an inferior fruit, with a thick and fleshy rind, with two or more fleshy parietal placentas, projecting more or less inward."—Darby, 1855

A Section of the Pepo

"The Pepo is an inferior fruit, with a thick and fleshy rind, with two or more fleshy parietal placentas,…

"A hydroid colony of six polyps; f, feeding polyp; r, reproductive polyp; m, a medusa." —Davison, 1906

Polyp

"A hydroid colony of six polyps; f, feeding polyp; r, reproductive polyp; m, a medusa." —Davison,…

"The Pome is an inferior fleshy fruit, of which the edicarp, mesocarp, and fleshy calyx form the greater part, which is eatable. The endocarp is tough and horny, and forms the cells of the seeds."—Darby, 1855

Pome

"The Pome is an inferior fleshy fruit, of which the edicarp, mesocarp, and fleshy calyx form the greater…

"The pomegranate consists of two rows of carpels, one above the other, but in other respects would fall under this division."—Darby, 1855

Pomegranate

"The pomegranate consists of two rows of carpels, one above the other, but in other respects would fall…

"The Silicua is a variety of the capsule, composed of two carpels opening from the base upward, and having a framework called the replum, which forms a spurious dissepiment."—Darby, 1855

Silicula

"The Silicua is a variety of the capsule, composed of two carpels opening from the base upward, and…