DAY FLOWER 



77 



characteristics; the fibrovascular bundles are concentric and arranged 

 in several rows outside of which and within the endodermis is a ring 

 of sclerenchymatous fibers. The underground organs usually con- 

 tain starch and not infrequently mucilage cells enclosing raphides. 



HELONIAS. False Unicorn Root. The dried rhizome and 

 roots of Chamaelirium luteum (Fam. Liliacae). The plant commonly 



FIG. 27. Commelina communis. A, part of flowering branch. B, portion of the 

 prostrate stem. C, transverse section of stem showing epidermal layer (E) ; 

 a collenchymatous layer composed of from 3 to 6 rows of cells (C); 

 cortical parenchyma (P); a well-defined cylinder sheath (S) composed 

 of rather large and strongly lignified cells and in which in the entire section 

 are included about 14 fibrovascular bundles (F), parenchyma of the pith 

 (M) in which are scattered fibrovascular bundles (V). D, a collateral 

 fibrovascular bundle. After Preston. 



known as Blazing Star was formerly called by botanists Helonias 

 dioica, the name first given to it by Pursh. It was for some time also 

 referred to as Chamaelirium carolinanum. The name now generally 

 applied is the Linnsean name, Chamaelirium luteum, which was 

 restored by Gray in the 5th edition of his Manual. While to those 

 who are acquainted with taxonomy this use of synonomy is intelligible 



