ClipArt ETC
"Taxus baccata loaded with male flowers; 1. a male flower; 2. an anther; 3. a female flower; 4. a vertical section of an ovule; 5. a ripe fruit; 6. of a ripe seed, showing the embryo." -Lindley, 1853

European Yew

"Taxus baccata loaded with male flowers; 1. a male flower; 2. an anther; 3. a female flower; 4. a vertical…

Diagram showing the three successive stages of development. Transverse vertical sections. The yolk sac, ys, is seen progressively diminishing in size. In the embryo itself the medullary canal and notochord are seen in section. a', in middle figure, the alimentary canal, becoming pinched off, as it were, from the yolk sac; a', in right hand figure, alimentary canal completely closed; a, in last two figures amnion; ac', cavity of amnion filled with amniotic fluid; p, space between amnion and chorion continuous with the pleuroperitoneal cavity inside the body; vt, vitelline membrane; ys, yolk sac, or umbilical vesicle.

Development of the Yolk Sac

Diagram showing the three successive stages of development. Transverse vertical sections. The yolk sac,…