340 GLOSSARY 



Bunium — A genus of tuberous Umbcllifem?, earthnut, 

 Buoyant — Light, able to tioat in air or water. 

 Button-wood — A term applied in America to the plane 

 tree. 



C 



Cacti — A family of succulent plants usually devoid of leaves. 



Caducous — Quickly dropping off. 



Calceolaria — A genus of herbaceous garden plants with 



pouched fiowers. 

 Calcium — An element present in all calcareous rocks. 

 Calvptra — The hood of a moss-fruit. 

 Calyx — The outer whorl of the flower or Horal envelope, 



cup-shaped. 

 Cambium-layer — A layer of active growing tissue. 

 Campanula — A genus of Alpine and herbaceous plants with 



bell-shaped flowers. 

 CampJior — A drug obtained by dry distillation of the leaves 



and stems of Camphora ofticinarum. 

 Capillary — Fine and minute, hair-like. 



Carbon-dioxide — Symbol CO,. A gas existing in small quan- 

 tities in the air, otherwise called carbonic-acid gas. 

 Carbon-monoxide — A poisonous gas whose molecule is com- 

 posed of one atom of carbon and one atom of oxygen. 

 Carex — A genus of sedge-like plants. 

 Carpel — A pistillate leaf, one of the component parts of the 



pistil. 

 Caterpillar — The form of an insect after it is hatched, first 



stage. 

 Catkin — A spike of staminate or pistillate flowers usually 



pendulous. 

 Checkered — Outlined into a square-like pattern. 

 Chcvaux de frise — An obstacle consisting of iron spikes set 



in a framework of iron. 

 Chlorophvll — The green colouring matter of leaves and stems. 

 Cholera — A contagious disease. 



