THE IXDETERMIXATE FORM OF ANTHOTAXY 



201 



at length to a uniform level, those of successively later development 

 brought to successively higher points, or left at successively lower 

 levels. This fact demonstrates that the cymose or descending nature 

 of an inflorescence cannot be determined by noting the relative heights 

 of the flowers themselves, but only by noting the order of their 

 development. 



cjTcfJ. 



^c9j. JS6 



Fig. o7ti. Scapose 1-floworod poduni'Ie of tulip. .">77. Connib of Crataegus. o7S. He.'ld of C^pha- 

 lonttnis. 570. UmbijI of .Lvv/tpuKt. ."iSO, Seeund riicoine of Birut-.'.,,'.! .^Sl. A descending inflorescouce. 

 5S2 Ordinary raceme. oS;l .\ spike. 584. Compound cyme of Saponitria. oSo Globular spadis 

 enclosed in spathe of Spi):}>tjtma. 5SG. Cylindrici\l spadi.x of -Icon^i;. 



The Indeterminate Form of Anthotaxy. — In the second series, the first 

 flower to develop is structurally tlie lowest of the cluster, the succession 

 being upward, Ascending or Acropetal (Figs. 5S2 and 5S3). If the 

 successive branches develop less rapidly than their predecessors, 

 the result is again a flat-topped inflorescence, with the development 

 from the outside to center, or Centripetal (.Figs. 377 and 579). The 

 branches and flowers may be separated on obvious peduncles and 

 pedicels, or these may be not apparent, the flowers being sessile. In 

 acconlance with the characters above explained, we obtain the following 

 simple forms of anthotax\" : 



