On the Floral Conformation of the Genus Cypripedium
On the Floral Conformation of the Genus Cypripedium
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e. 45°. The other lateral petal was normal m form and in position.
Peloeia.
IV. Tendency towards Begularity of Form and Arrangement of Parts, or Peloria.
Peloria in Cypripedium, as in other plants, is either: — a, Be- gular, when the tendency to regularity is brought about by an increase in the number of regular portions, a tendency which seems to be a reversion to a simpler and probably primordial condition, as is the case perhaps in JJropedium ; or, /J, Irregular, when symmetry is restored by... the development in an irregular * Bull. Acad. Roy. Belgique, t. xviii. p. 196, tab. ; Lobelia (1851), p. 65.
Digitized by CjOOQ IC 418 DB. M. T. MASTEBS ON THE FLOBAL form of parts which are usually regular. Irregular Peloria, when not associated, as it sometimes is, with compensatory defect in other whorls, may be regarded as an instance of enhanced complexity and of potential progressive development. The opposite view, that the most highly complex is the form whence the less differentiated case of regular peloria is derived by a pro- cess of degeneration, finds, so far as I know, no warranty, either in organogeny or in anatomy.
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To quickly assess the difficulty of the text, read a short excerpt:
e. 45°. The other lateral petal was normal m form and in position.
Peloeia.
IV. Tendency towards Begularity of Form and Arrangement of Parts, or Peloria.
Peloria in Cypripedium, as in other plants, is either: — a, Be- gular, when the tendency to regularity is brought about by an increase in the number of regular portions, a tendency which seems to be a reversion to a simpler and probably primordial condition, as is the case perhaps in JJropedium ; or, /J, Irregular, when symmetry is restored by... the development in an irregular * Bull. Acad. Roy. Belgique, t. xviii. p. 196, tab. ; Lobelia (1851), p. 65.
Digitized by CjOOQ IC 418 DB. M. T. MASTEBS ON THE FLOBAL form of parts which are usually regular. Irregular Peloria, when not associated, as it sometimes is, with compensatory defect in other whorls, may be regarded as an instance of enhanced complexity and of potential progressive development. The opposite view, that the most highly complex is the form whence the less differentiated case of regular peloria is derived by a pro- cess of degeneration, finds, so far as I know, no warranty, either in organogeny or in anatomy.
What to read after On the Floral Conformation of the Genus Cypripedium?
You can find similar books in the "Read Also" column, or choose other free books by Maxwell Tylden Masters to read onlineMoreLess
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