Types of Floral Mechanism; a Selection of Diagrams And Descriptions of Common Flowers Arranged As An Introduction to the Systematic Study of Angiosperms
The book Types of Floral Mechanism; a Selection of Diagrams And Descriptions of Common Flowers Arranged As An Introduction to the Systematic Study of Angiosperms was written by author A H Arthur Harry Church Here you can read free online of Types of Floral Mechanism; a Selection of Diagrams And Descriptions of Common Flowers Arranged As An Introduction to the Systematic Study of Angiosperms book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Types of Floral Mechanism; a Selection of Diagrams And Descriptions of Common Flowers Arranged As An Introduction to the Systematic Study of Angiosperms a good or bad book?
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Growth in this region practically ceases, and the 4 commisural or placental eleva- tions show above the collar-edge of the carpel-tips which in some cases form 4 obscurely marked lobes (cf. Calhina). The 4-locular ovary assumes a 4-angled form, and the 4 angles press outwards against the anti- petalous stamens, so that these may even look at certain stages as if on a circle a little outside the antisepalous ones. The disc again appears relatively early, when the ovules commence to form on the p...lacentas ; the regions of secondary elonga- tion are also put in at slightly different times, and without any reference to one another, the rate of growth being at first most rapid in the style-shaft.^ Note that the prefloration of the corolla is established at a very early date, before the commencement of the Gamopetalous Zone. Though such an arrangement of regular over- lapping must be directed by special growth-phenomena in the corresponding edges of the 4 petals, which so far as can be seen are isophyllous, and equal in origin and position in the symmetrical bud, and should by theoretical construction meet at their adjacent edges on exactly equal terms ; it is difficult to see what benefit can accrue to the bud from anv one Fig.
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