The Botanic Garden. Part II. | Page 2

Erasmus Darwin
Figure of No. xiii. in the annexed Plate.
In the next two Classes, not only the number of stamens are to be observed, but the reciprocal proportions in respect to height.
XIV. TWO POWERS, Didynamia. Four Stamens, of which two are lower than the other two; as is seen in the two first Figures of No. xiv.
XV. FOUR POWERS, Tetradynamia. Six Stamens; of which four are taller, and the two lower ones opposite to each other; as is seen in the third Figure of the upper row in No. 15.
The five subsequent Classes are distinguished not by the number of the males, or stamens, but by their union or adhesion, either by their anthers, or filaments, or to the female or pistil.
XVI. ONE BROTHERHOOD, Monadelphia. Many Stamens united by their filaments into one company; as in the second Figure below of No. xvi.
XVII. TWO BROTHERHOODS, Diadelphia. Many Stamens united by their filaments into two Companies; as in the uppermost Fig. No. xvii.
XVIII. MANY BROTHERHOODS, Polyadelphia. Many Stamens united by their filaments into three or more companies, as in No. xviii.
XIX. CONFEDERATE MALES, Syngenesia. Many Stamens united by their anthers; as in first and second Figures, No. xix.
XX. FEMININE MALES, Gynandria. Many Stamens attached to the pistil.
The next three Classes consist of plants, whose flowers contain but one of the sexes; or if some of them contain both sexes, there are other flowers accompanying them of but one sex.
XXI. ONE HOUSE, Monoecia. Male flowers and female flowers separate, but on the same plant.
XXII. TWO HOUSES, Dioecia. Male flowers and female flowers separate, on different plants.
XXIII. POLYGAMY, Polygamia. Male and female flowers on one or more plants, which have at the same time flowers of both sexes.
The last Class contains the plants whose flowers are not discernible.
XXIV. CLANDESTINE MARRIAGE, Cryptogamia.
The Orders of the first thirteen Classes are founded on the number of Females, or Pistils, and distinguished by the names, ONE FEMALE, Monogynia_. TWO FEMALES, _Digynia_. THREE FEMALES, _Trigynia, &c. as is seen in No. i. which represents a plant of one male, one female; and in the first Figure of No. xi. which represents a flower with twelve males, and three females; (for, where the pistils have no apparent styles, the summits, or stigmas, are to be numbered) and in the first Figure of No. xii. which represents a flower with twenty males and many females; and in the last Figure of the same No. which has twenty males and one female; and in No. xiii. which represents a flower with many males and many females.
The Class of TWO POWERS, is divided into two natural Orders; into such as have their seeds naked at the bottom of the calyx, or flower cup; and such as have their seeds covered; as is seen in No. xiv. Fig. 3. and 5.
The Class of FOUR POWERS, is divided also into two Orders; in one of these the seeds are inclosed in a silicule, as in Shepherd's purse. No. xiv. Fig. 5. In the other they are inclosed in a silique, as in Wall-flower. Fig. 4.
In all the other Classes, excepting the Classes Confederate Males, and Clandestine Marriage, as the character of each Class is distinguished by the situations of the males; the character of the Orders is marked by the numbers of them. In the Class ONE BROTHERHOOD, No. xvi. Fig. 3. the Order of ten males is represented. And in the Class TWO BROTHERHOODS, No. xvii. Fig. 2. the Order ten males is represented.
In the Class CONFEDERATE MALES, the Orders are chiefly distinguished by the fertility or barrenness of the florets of the disk, or ray of the compound flower.
And in the Class of CLANDESTINE MARRIAGE, the four Orders are termed FERNS, MOSSES, FLAGS, and FUNGUSSES.
The Orders are again divided into Genera, or Families, which are all natural associations, and are described from the general resemblances of the parts of fructification, in respect to their number, form, situation, and reciprocal proportion. These are the Calyx, or Flower-cup, as seen in No. iv. Fig. 1. No. x. Fig. 1. and 3. No. xiv. Fig. 1. 2. 3. 4. Second, the Corol, or Blossom, as seen in No. i. ii. &c. Third, the Males, or Stamens; as in No. iv. Fig. 1. and No. viii. Fig. 1. Fourth, the Females, or Pistils; as in No. i. No. xii. Fig. 1. No. xiv. Fig. 3. No. xv. Fig. 3. Fifth, the Pericarp or Fruit-vessel; as No. xv. Fig. 4. 5. No. xvii. Fig. 2. Sixth, the Seeds.
The illustrious author of the Sexual System of Botany, in his preface to his account of the Natural Orders, ingeniously imagines, that one plant of each Natural Order was created in the beginning; and that the intermarriages of these produced one plant of every Genus, or Family; and that the intermarriages of
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