Page:An introduction to physiological and systematical botany (1st edition).djvu/506

 476 Order, to which Schreber has added Epibaterium and Pometia of Forster, as well as the splendid Guettarda, ''Hort. Mal. v.'' 4. t. 48. The latter varies from 6 to 9 in the parts of the flower, and constitutes the Order Heptandria in Linnæus, according to his usual principle, of placing such irregular plants, as much as possible, in small Classes or Orders, that they might be the more easily found.

7. Polyandria. Stamens more than 7. Ceratophyllum, ''Engl. Bot. t. 947, 679; Myriophyllum, t. 83, 218; and the handsome Sagittaria, t.'' 84, stand here at present, but the accessory parts in their two kinds of flowers are alike. Begonia, ''Exot. Bot. t.'' 101, has the number of its petals, though various in several species, always sufficiently different in the barren and fertile flowers to fix it here. The most indubitable plants of this Order are amentaceous, Quercus, ''Engl. Bot. t. 1342; Fagus, t. 886; Corylus, t. 723; Carpinus, Juglans, Platanus, &c.—Arum, t. 1298, Calla and Ambrosinia'', all brought hither