\Q HORTLS GRAMINEUS WOU U RNENSIS. 



V. 



The flower consists of 



Five distinct parts, the calyx, or outer husks, (glu/na) ; the 

 corolla, or inner husks, {core/ la): the stamina, or male parts, 

 (stamina): the pistil, or female parts ; and the germen, or rudiment 

 of the future seed. 



The calyx, or outer husks, contain the flower, and afterwards 

 the seed. Its more obvious characters of distinction consist in 

 the number of valves, or scales, of which it is composed. 



1. One-valved, (unitalvis), that consists of only one valve, as in 



Lolium, (rye-grass). 



2. Two-valved, {bivahh), that consists of tsvo valves, as in most 



grasses. 



3. Many valved, {multivalvis*), when the outer husks consist of 



more than two valves, as in Uordeum, (barley), and Elymus, 

 (lyme-grass). 



4. Keeled, {carinatus), bent like the keel of a ship or boat, as in 



Phalaris canariensis. 



5. Frincred, {ciliolus), having soft hairs set round the edges, as in 



P/ileum pratense. 



6. Lopped, (tmncatus), when the apex appears as if cut horizon- 



tally, as in P/ilenm pratense. 



7. Prickly, {cnspidatus), ending in dagger-like points, as in 



Phleuin pratense. 



The corolla, or inner husks, contain the essential parts of tlie 



flower, (stamina, style, and germen) ; when the seed is perfected, 



they generally enclose and adhere to it. This, and the calyx, 



constitute the chaff of oats, wheat, &c. It has the following 



varieties: 



1. One-valved, (univaitis), which consists of one valve only, as in 



Trichodium rnpestre. 



2. Two-valved, {bivalvis), as in most grasses. 



3. Awned, (aristata), when furnished with an awn. 



* Tlie involucre, or leaves like spines, whicli surrounds one or several flowers, is 

 sometimes found in grasses, but is more particularly the property of another order 

 of plants (the umbelliflorus);mA, being in the grasses much resembling the glumes 

 of the calyx, I have included it here, under the distinction multivalve calyx ; 

 merely to avoid too numerous divisions ; which, to those who confine their study of 

 Botany only to the Grasses, (for whose use only tliese pages are designed,) will be, 

 I trust, useful. 



