10 GRAMMAR OF 



commonly at the origin of the peduncles of umbels, and 

 sometimes attached to other aggregate flowers. 



Involucres are either universal, placer! at the origin 

 of the universal umbel, as in caraway, lovage, &c. ; or 

 partial, placed at the origin of a particular umbel, as 

 in coriander 5 or proper, placed beneath a single flower. 



3. Spathe. A kind of membrane, which at first encloses 

 the flower, and after it expands is left at a distance 

 below it, as daffodil, onion, Indian turnip. 



4. Glume, That kind of calyx which is composed of one 

 two, or three valves or scales, commonly transparent 

 at margin, and often terminated by a long awn or 

 beard. All grasses have glume calyxes. 



5. Jlment. An assemblage of flower-bearing scales, ar- 

 ranged on a slender thread or receptacle ; each scale 

 generally constituting the lateral calyx of a flower, as 

 in the willow, chesnut, pine, &c. 



6. Caiyptre. The cap or hood of pistillate mosses, res- 

 embling in form and position an extinguisher set on a 

 candle. Conspicuous in the common hair-cap moss. 



7. Volva. The ring or wrapper at first enclosing the 

 nileus or head of a fungus ; and which, after the plant 

 has arrived to maturity, contracts and remains on the 

 stem or at the root. 



SUBDIVISIONS OF THE COROL. 



Everycorol is either riionopetalous, consisting of one 

 petal or flower-leaf; or polypetalous, consisting of more 

 than one. 



Jlonopetalous Cords are, 



1. Bell-form. Hollowed out within the base, and general- 

 ly diverging upwards, as Canterbury bells, gentian. Ace. 



2. Funnd-Jorm. With a tubular base, and the border 

 opening gradually in the form of a tunnel, as the thorn- 

 apple, morning-glory. 



3. Salver-form. Having a flat spreading limb or border, 

 proceeding from the top of a tube, as lilac, trailing arbu- 

 tus, &c. 



4. Wheel-form. Having a spreading border without a 

 tube, or with an exceeding short one, as borage, laurel. 



5. Labiate A labiate corol is divided into two general 

 parts, somewhat resembling the lips of a horse or other 

 animal Labiate corols are either personate, (with \\& 



