34 BRITISH EXAMPLES OF THE 



THIRD CLASS.— Triandria. 



Stamens 3. Flowers united. Orders 3. 

 Monogynia. Digyn'ia. Trigynia. 



1 . Monogynia is subdivided tlius : 



« Flowers superior : 

 Ex. Valerian, Crocus, and Iris. 



^Flowers inferior, grass-like, seed one :* 

 Ex. Club-rush, (Scirpus) and Cotton-grass, (Erio- 

 pliorum.) 



2. Digynia is an important order, comprehending 



most of the grasses : t the genera of this 

 order are arranged or subdivided as follow : 



"Calyx single-flowered : 

 Ex. Fox-tail grass, (Alopecuris.) Canary-grass, 

 (Phalaris.) 



^ Calyx 2, or rarely 3-flowered : 

 Ex. Melic-grass, (Melica) Soft-grass, (Holcus.) 



<^ Calyx 3, or, mostly many-flowered : 

 Ex. Meadow-grass, (Poa.) Quaking-grass, (Briza) 



• The plants of this division, excepting Mat-grass, (Nardus) form a 

 part of the natural ordr Cyjierucca. 



t Which, together with the genus Nardus, and Anthoxantfmm in the 

 second class, belong to the natural order €ramninc(X. 



