94 



Elementary Work in Botany. 



they form a fascicle. Very short pedicels reduce the um- 

 bellate cyme or fascicle to a glomerule which is like a head 

 in appearance. 



As has been indicated, inflorescence may not only be com- 

 pound but mixed. There are, for example, racemes of cymes 



which resemble and are often 

 called panicles. Such a false 

 panicle is called a thyrsus or 

 thyrse. Buckeye and lilac blos- 

 soms are in thyrses. Racemes, 

 spikes, etc., are sometimes 

 bractless. 



Classify your flower clusters 

 and describe them. It may be 

 necessary, as in describing 

 leaves, to combine terms. For 

 example: The cluster repre- 



Fig. 76. A bractless corymbose raceme. SCllted 1U Fig. 76 is between a 



raceme and a corymb, and it is without bracts. We would, 

 therefore, describe it as a bractless, corymbose raceme. 



Bring for the next exercise any of the following or 

 similar flowers: sunflower, mayweed, chrysanthemum, aster, 

 marigold, dandelion, daisy, tarweed, thistle, lettuce, tidy-tips, 

 cosmos, marguerite, tansy, goldenrod. 



Composite 



and examine it. 



EXERCISE 49. 



Flowers. Take your largest specimen 

 Do you find outside petal -like leaves simi- 



