WOOD'S CLASS-BOOK OF BOTANY. vil 



266. In the third class, where are the longest veinlets ? 

 Name and describe the four forms of this class. 



267. In the fourth class, how are the lowest veinlets ? 



Note the form of the cordate leaf. The auriculate. The sagittate. 



The hastate. 

 Observe fig. 110 what is its form? Also of 111? 112? 113? 



114? 115? 116? 117? 

 Observe fig. 130 what is its form? What of 131? 136? 137? 



268. On what do the pinnatifid forms depend ? 



The term pinnated contrasts with what other term? 



269. Describe the pinnatifid leaf. The runcinate. Lyrate. 



270. What is pinately parted? Sinuate? 



271. What figures on page 56 have palmate venation ? 



Which two are renifbrm ? Which is peltate? Which trilobate? 



272. Observe the figures on page 58, which is palmately cleft ? 

 Which palmately parted? Which merely lobed ? 



273. What form is pedate ? Find an example. 



274. What is remarked of the parallel-veined leaves? 



275. What is the linear leaf? Give examples. 



Define the ensiform leaf. What good example is here ? 



276. By what term is the palm leaf denoted ? 



277. What two forms of leaf are peculiar to the fir tribe ? 



278. Speaking of merely the margin, when is it entire? 



279. When is the margin dentate ? When serrate? Crenate? 

 What if the teeth are very fine ? What is doubly dentate? 



280. Define an undulate margin. 



281. What terms apply to irregularly divided margins? 



282. What does the term crisped denote ? 



APEX. 



283. Name and define an acuminate apex. An acute. An oltus*. 



Other terms. 



284. The truncate leaf. The emarginate, etc. 



OF THE COMPOUND LEAF. 



285. Were a simple leaf to become compound, how might it become so? 

 Please illustrate this by cutting a simple leaf. 



286. What are the leaflets ? The petiolules ? Iherachis? 



287. Can you describe a pinnate leaf? 



What modification of pinnate is fig. 161? 160? 159? 



288. As to the number of leaflets in the pinnate leaf how many ? 

 How many in the trifoliate ? Binate ? 



What reason to say that the lemon leaf (167) is compound? 



289. How may a pinnate leaf become bipinnate? Tripinnate? 

 What is a decompound leaf? 



290. What are transition kaves ? Describe fig. 165. 



291. Define a biternate leaf. A triternate. 



292. Please distinguish the palmately and pinnately ternate. 



