WOODS CLASS-BOOK OF BOTANY. i x 



328. What are pedicels? When is a flower sessile f 



329. How does a scape differ from a peduncle ? 



330. What is the rachis of an inflorescence ? 



331. What is the torus? 



332. Mention some odd varieties of the peduncle. 

 Describe fig. 115. 116. 117. 118. 



333. What are bracteoles? 



334. How are the bracts in Aster ? How in the Crucifers ? 



335. What is said of the color of bracts ? 



336. What is a spathe ? Examples in figures 189, 190, 191 



337. How may an involucre be formed ? 



338. Describe a compound flower of the Composite. 

 What is the chaff on the torus ? Describe fig. 193. 



339. In the grasses, what are the glumes ? The pales ? (Fig. 195.) 



340. In the oak, etc., what is the nature of the cup ? (Fig. 194.) 



342. Why is axillary inflorescence called indefinite ? 

 Why is it called centripetal ? 



Where is the centre of a lengthened inflorescence ? 



343. Why is terminal inflorescence definite t Centrifugal? 



344. Are both terminal and axillary inflorescence ever combined ? 



345. Name the nine varieties of axillary inflorescence. 



346. How is the inflorescence of the mullein, and how named ? 

 In Timothy grass, what are the spikes and spikelets ? 



347. What is a spadix ? Give examples. 

 What inflorescence in figs. 200 ? 201 ? 202 ? 



348. What is a catkin ? Examples ? 



349. How does tlie raceme differ from the spike ? 



350. How does the corymb differ from the raceme ? 



351. How does the umbel differ from the corymb ? 



What the compound umbel ? The rays ? The umbelleta ? 



352. What is a panicle ? Give common examples. 



353. What is a thyrse ? What is a head ? 



355. In a head, or compound flower of Composite, what answers to calyx ? 



What to corolla? What are the florets of the ray? What the 

 florets of the disk ? 



Describe each of the following figures, viz. : 203, 204, 205, 206, 207, 208, 

 209, 210, 211, 212, 213, 214, 215. 



356. Name three varieties of terminal inflorescence. 



357. What is a cyme ? What is a scorpoid cyme ? 



359. Show the evolution of a cyme in chickweed (fig. 219). 



360. Show the evolution of a scorpoid cyme by figs. 220, 221. 



361. What is a fascicle ? A glomerule ? 



What does fig. 216 represent ? Fig. 217 ? Fig. 218? Fig. 221? 

 363. How may a spike become a raceme (fig. 222) ? 



How a raceme a corymb (223) ? An umbel (224) ? A head (227) ? What 



is fig. 225? 226? 228? 

 Into what is the entire inflorescence transformed in grapes ? 



FLOWERING. 



364. What is the meaning of the word ? 



365. What is said of the date of flowering for each species ? 



366. How would you make a floral calendar ? 

 How is this related to the climate ? 



