EXPLANATION OF THE PLATES. 



15 



PLATE V. 



SUPPORTS AND ARMATURE OF PLANTS. 



Fig 



1. Stipula, C a stipule ; a scale or scales at the insertion of 



the footstalks of the leaves and flowers. 

 Cirrus, {_ a clasper or tendril. 



2. Aculeus simplex, that species of vegetable armature called 



prickles, (aculei) in which the weapons in ques- 

 tion proceed singly from the stem or branch. 



3. triplex, prickles which grow by threes ; a three- 

 pronged prickle. 



4. Spina simplex, a simple or single thorn. 



5. triplex, a triple thorn. 



6. Stimuli, stings, as in the Nettle, Acalypha and Tragia. 



7. Bractea, floral leaves ; leaves which differ in colour and 



shape from the other leaves of the plant. In 

 some species of Sage, Lavender, and Crown- 



Fig. 



Imperial, they assume the appearance of a 

 tuft of hair at the end of the flower-stem, and 

 hence have obtained the name of coma. 



Glandules concaves, concave glandular appearances, seated 

 on the footstalk of the leaves. 



pedicellate, glands placed on short footstalks. 



and which likewise have their seat on the 

 petiolus. 

 , Pili, hairs ; a species of pubescence. 



A thorny leaf and branch. 



The prickly capsule of the Beech. 



Pedunculus, a flower-stalk. 



The thorny fruit of the Horse-chestnut. 



The prickly fruit of the Chestnut. 



