Page:An introduction to physiological and systematical botany (1st edition).djvu/442

 412 . Magnificent and valuable works on this family have been published in Germany by the celebrated Schreber and by Dr. Host. The Fl. Græca also is rich in this department, to which the late Dr. Sibthorp paid great attention. Much is to be expected from scientific agriculturists; but Nature so absolutely, in general, accommodates each grass to its own soil and station, that nothing is more difficult than to overcome their habits, insomuch that few grasses can be generally cultivated at pleasure.

3. Trigynia is chiefly composed of little pink-like plants, or Caryophylleæ, as Holosteum, ''Engl. Bot. t.'' 27.

Tillæa muscosa, t. 116, has the number proper to this order, but the rest of the genus bears every part of the fructification in fours. This in Linnæan language is expressed by saying the flower of Tillæa is quadrifidus, four-cleft, and T. muscosa excludes, or lays aside, one fourth of the fructification.