.318 TRIANDRIA. 



tis's Magazine, /m, Gladiolus, Ixia, &c., also Crocus, 

 Engl. Bot. t. 343, 344,491, and numerous grass-like 

 plants, Schcenus, Cyperus, Scirpus, see FL Grac. v. 1, 

 and Engl. Bot. t, 950, 1309, 542, 873, &c. 



2. Digynia. This important Order consists of the true 

 Grasses ; seep. 113. Their habit is more easily 

 perceived than defined ; their value, as furnishing 

 herbage for cattle, and grain for man, is sufficiently 

 obvious. No poisonous plant is found among them, 

 except the Loliiim temuleiitum, Engl, Bot. t. 1124, 

 said to be intoxicating and pernicious in bread. 

 Their genera are not easily defined. Linnaeus, Jus- 

 sieu, and most botanists pay regard to the number of 

 florets in each spikelet, but in Arundo this is of no 

 moment. Magnificent and valuable works on this 

 family have been published in Germany by the cele- 

 brated Schreber and by Dr. Host. The Fl. Gr^eca 

 also is rich in this department, to which the late Dr. 

 Sibthorp paid great attention. Much is to be ex- 

 pected 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 Caryophyllecs^ as Holosteum, Engl. Bot. 

 t. 27. 



TilUa 7niiscosa, 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 Linnsean Ian- 



