Flora Edinensis: or, a description of plants growing near Edinburgh, arranged according to the Linnean system, with a concise introduction to the natural orders of the Class Cryptogamia, and illustrative plates / By Robert Kaye Greville.
- Robert Kaye Greville
- Date:
- 1824
Licence: Public Domain Mark
Credit: Flora Edinensis: or, a description of plants growing near Edinburgh, arranged according to the Linnean system, with a concise introduction to the natural orders of the Class Cryptogamia, and illustrative plates / By Robert Kaye Greville. Source: Wellcome Collection.
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![These Classes contain a number of Orders, founded on the folio wing Characters. In the first Id Classes, they solely depend on the num- ber of pistils, and are named Monogynin, Digynia, Trigynia, Tetragynia, Pentagynia, Ihwagynia, Hcptagynia, Odogyniu, Enncugipiia, Dccagynia, Dodecagynia, and Polygynia. In trie 14th Class are two orders. 1. Gymnospcrmia ; the seeds naked, and usually 4, never more. 2. Angiospermia ; the seeds inclosed in a pericarp. In the 15th Class there are two Orders. 1. Siliculosu, the shape of the fruit being that of a Silicula or pouch. 2. Siliquosa, the fruit forming a long pod or Siliqua. In the 16th, 17th, and 18th Classes, the Orders are named from the number of stamens, and have the same names as the first 13 Classes. In the 19th Class the Orders are five. 1. Poly gamut cegita/is ; all the florets perfect, having stamens and a pistil. 2. Polygamia superjtua ; florets of the disk perfect, those of the circumference with a pistil only. v 3. Polygaviia fnmtrauea ; florets of the disk perfect, those of the circumfe- rence with an abortive pistil, or none at ail. 4. Polygamia necessaria ; florets of the disk with stamens, those of the circum- ference with a pistil. 5. Polygamia aegregata; u several flowers, either simple or compound, hut with united anthers and a proper calyx, all included in one common calyx.” Sm. In the 20th Class the Orders are named according to the number of stamens, M&nandria, &c. So also are those of the 21st and 22d Classes, except when there is a union of the fila- ments; the Orders are then named Monadclphla, <kc. In the 23d Class there are three Orders. ]. Moncccia ; two or all the flowers characteristic of the Class found on the same plant. 2. Direcia ; two or all the flowers divided, and found on two separate plants. 3. Triaecia ; the three flowers on three separate plants. The Linnean Orders of the 24th Class are, 1. Filices. 2. Musci. 3. Algo’. 4. Fungi. Two others have been added by modern Botanists, viz. ITcpatico and Lic.hcncs. These Orders form Natural Families, and have been farther subdivided by those who have made the natural affinities of plants their study. We shall now proceed to give a concise and general introduction to the Class Cryptogamia, and its Orders as adopted in the present work ;—taking each Order in succession. Cryptogamic plants differ from those of all the other Classes both in their structure and reproductive organs. In struc-](https://iiif.wellcomecollection.org/image/b2932161x_0014.jp2/full/800%2C/0/default.jpg)
