The Principles of Descriptive Physiological Botany
The Principles of Descriptive Physiological Botany
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In our eReader you can find the full English version of the book. Read The Principles of Descriptive Physiological Botany Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Principles of Descriptive Physiological Botany
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The seeds are attached to lateral placentae; the dissepi- ment is formed by a thin membrane, which is appa- rently a prolongation of the inner skin (endocarp) of the two carpels (fig. 123. ).
(109-) Seed. It would be impossible to obtain a just notion of the seed, without first tracing the ovule through the several alterations which it undergoes, after it has been subjected to the fertilising influence of the pollen ; but, as such -letails are more especially con- SECT. I. ORGANOGRAPHY AND GLOS...SOLOGY. Ill nected with the physiology of our subject, we shall for the present confine ourselves to a few general observations on the ripe seed. Every seed is attached to the placenta, by what is termed a " funicular, or um- bilical cord;" and when the seed has fallen from the pericarp, it is marked by a scar or " hilum, " at the place where this cord was attached to it. In very many cases, this cord is small, and scarcely distinguishable, but in some it is well marked ; and in the genus Mag- nolia, when the pericarp bursts, the seeds hang out for some time, and to a con- siderable distance, by means of their umbilical cords, before they become de- tached and fall to the ground (fg.
What to read after The Principles of Descriptive Physiological Botany?
You can find similar books in the "Read Also" column, or choose other free books by J S John Stevens Henslow to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The seeds are attached to lateral placentae; the dissepi- ment is formed by a thin membrane, which is appa- rently a prolongation of the inner skin (endocarp) of the two carpels (fig. 123. ).
(109-) Seed. It would be impossible to obtain a just notion of the seed, without first tracing the ovule through the several alterations which it undergoes, after it has been subjected to the fertilising influence of the pollen ; but, as such -letails are more especially con- SECT. I. ORGANOGRAPHY AND GLOS...SOLOGY. Ill nected with the physiology of our subject, we shall for the present confine ourselves to a few general observations on the ripe seed. Every seed is attached to the placenta, by what is termed a " funicular, or um- bilical cord;" and when the seed has fallen from the pericarp, it is marked by a scar or " hilum, " at the place where this cord was attached to it. In very many cases, this cord is small, and scarcely distinguishable, but in some it is well marked ; and in the genus Mag- nolia, when the pericarp bursts, the seeds hang out for some time, and to a con- siderable distance, by means of their umbilical cords, before they become de- tached and fall to the ground (fg.
What to read after The Principles of Descriptive Physiological Botany?
You can find similar books in the "Read Also" column, or choose other free books by J S John Stevens Henslow to read onlineMoreLess
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