. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. REPRODUCTION, VEGETABLE (VEGETABLE OVUM). 35. At the period of the formation of the spores, the receptacle of Geaster (fimbriatus) is a solid body of a depressed spheroidal form. It presents for examination a central mass and a peridinm, the tissue of the latter being con- tinuous with that of the former only at the base. The central mass or kernel is originally Fig. Diagram of receptacle of Geaster fimbriatus. The kernel, a, is surrounded by its reticular mem- brane, which is indicated by the inner of the two doubl
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. REPRODUCTION, VEGETABLE (VEGETABLE OVUM). 35. At the period of the formation of the spores, the receptacle of Geaster (fimbriatus) is a solid body of a depressed spheroidal form. It presents for examination a central mass and a peridinm, the tissue of the latter being con- tinuous with that of the former only at the base. The central mass or kernel is originally Fig. Diagram of receptacle of Geaster fimbriatus. The kernel, a, is surrounded by its reticular mem- brane, which is indicated by the inner of the two double lines. The outer double line corresponds to the resistant external layer of the peridinm. The intervening space, 6, is occupied by a delicate tissue of spherical cells. At c, all these struc- tures are continuous, as well with each other as with the mycelium from which the whole ori- ginates. solid, but when fully developed, presents numerous irregular cavities, which are scat- tered through its substance. It is entirely composed, when in the solid condition, of delicate filaments similar to those of mycelium, the arrangement of which is as follows :—The superficial filaments are closely woven toge- ther, so as to form a delicate reticular mem- brane, which invests the whole kernel, and from the inner aspect of which a second and very numerous set of filaments passes off towards the centre. It is of these, or of their ramifications, that the corky, semi-elastic sub- stance of the kernel is entirely formed. If we examine the cavities which have been men- tioned as existing in the fully developed con- dition, we find that they are furnished with a Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Todd, Robert Bentley, 1809-1860. London, Sherwood, Gilbert, and Piper
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