28 THE CALYX. 



common receptacle, and is scarcely to be distinguished 

 from a bractea. 



The common garden carrot will be found to have an involuerum ; 

 as also, the fool's-parsley, the narrow-leaved water parsnip, the com- 

 mon earth-nut and the anemones. (F. 14, a a.) 



8. The catkin or amentum is a species of calyx, which 

 consists of a common cylindrical receptacle, beset with 

 numerous scales, each of which is accompanied by one or 

 more stamens or pistils, so that the whole forms an ag- 

 gregate flower. 



The willow, fir, walnut, hazel, and hop, are all furnished with a 

 calyx of this kind. (F. 4.) 



9. The sheath is that kind of calyx, which is situated 

 more or less remote from the flower, and after constitut- 

 ing a covering to the infant bud, opens longitudinally. 



The snow-drop, common dragon, and several species of the nar- 

 cissus tribe, have a sheath calyx. (F. 31, c.) 



10. The glume or husk is a species of calyx, consti- 

 tuted by the valves of corn and grasses, enclosing one or 

 more florets. 



Wheat, barley, oats, and all other gramineous plants, have this 

 peculiar calyx. \f.KJ.) 



11. The veil or calyptra is a kind of membraneous 

 hood, which is said to be the calyx of the mosses covering 

 their capsule or fructification, like an extinguisher on a 

 candle. 



This is well seen in the genus hypnum Linnaeus considered the ca- 

 lyptra a calyx, but other botanists, especially Schreber and Smith, 

 reckon it to be a sort of corolla. (F. 58, a.) 



