42 INFLORESCENCE. 



stalks are produced along the common stalk, are of 

 unequal length, the lower ones being longest, and all 

 rise nearly to the same height, so as to form a flat and 

 even surface at top. Ex. Spircea opulifolia, and Yar- 

 row, JLchillta millefolium. 



Observation. A spike, whose partial stalks are gradually longer 

 as they stand lower, so that the flowers are nearly on a level. 

 Smith. 



Compound, (compositus) when the partial stalks 

 are divided. 



5. FASCICLE, (fasciculus,} PL 11, fig. 2. A little 

 bundle ; flowers on little stalks, variously inserted arid 

 subdivided, collected into a close bundle, level at top. 

 Ex. Sweet William, Dianthus barbatus, and nianthus 

 Jlrmeria. 



6. HEAD, (capitulum) bears the flowers sessile in a 

 globular form. Ex. Globe Amarathus, Gomphrena 

 globosa. High Balm, Monarda didijma, and M. Kal- 

 miana. 



Observation. In the capitulum, the flowers of the summit usu- 

 ally expand first. 



7. UMBEL, (umbetta.) PI. 11, fig. 3. A mode of 

 flowering in which the several flower-stalks or rays, 

 proceed from one common centre, like the braces of an 

 umbrella. 



Observation. The flower-stalks are of such lengths as to elevate 

 the flowers either to a concave, a level, a convex, or even a globose 

 surface. 



Simple umbel, (uihbella simplex) when each flow- 

 er-stalk terminates immediately in a flower. Ex. 

 gilk weed, Asdepias /fynaca,andGinseng,Panwia? quin- 

 quefolium. 



Compound, (composita.) PI. 11, fig. 3. When each 

 of the flower-stalks, instead of terminating in a flower, 

 jbears another umbel, (umbellula,} little umbel. 



Observation. 1. In a compound umbel, the greater umbel, con- 

 stituted of the larger set of rays, is termed U^IVEBSAL or 



