ascidia

If the animal be opened, it is found to have, in the first place, a tendinous membrane running round inside the shell-like substance, and within this membrane is the flesh-like substance of the ascidian, not resembling that in other molluscs; but this flesh, to which I now allude, is the same in all ascidia.

The History of Animals 2002

In Chap. II, § 1 and § 2 we have already referred to the value which Darwin, and more especially Häckel, lays on the relationship of the larva of the ascidia to the lancelet fish.

The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality Rudolf Schmid

Some of the ascidia or pitcher-like formations are due to the cohesion of the margins of two leaves, as in a specimen of _C.assula arborescens_, observed by C. Morren.

Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters

Paris quadrifolia var. Besides the above varieties of ascidia formed from the union of one or more leaves, there are others which seem to be the result of a peculiar excrescence or hypertrophy of the leaf.

Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters

In addition to other publications previously mentioned, reference may be made to the following treatises on the subject of ascidia: -- Bonnet, 'Rech.

Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters

Rare instances point [428] to poor races, but the magnolias and lime-trees are often so productive of ascidia as to suggest the idea of ever-sporting varieties.

Species and Varieties, Their Origin by Mutation Hugo de Vries 1891

The first bore one small pitcher-like blade, the second and third, each one highly modified organ, the fourth, two ascidia, and the last, one leaflet with slightly connate margins.

Species and Varieties, Their Origin by Mutation Hugo de Vries 1891

All in all, the tendency to produce ascidia increased from the beginning to the tenth leaf, and decreased from this upward.

Species and Varieties, Their Origin by Mutation Hugo de Vries 1891

Pitchers or ascidia, formed by the union of the margins of a leaf, are perhaps the best proof.

Species and Varieties, Their Origin by Mutation Hugo de Vries 1891

As far as we can judge peltate anomalies are quite uninjurious, while ascidia are forms which must impede the effect of the light on the leaf, as they conceal quite an important part of the upper surface.

Species and Varieties, Their Origin by Mutation Hugo de Vries 1891