190 



CYRILLACEAE. 



CYBILLA. White ti ti. 

 (Family Cyrillaceae). 



Shrubs or small trees: decidu- 

 ous or subevergreen. Twigs rath- 

 er slender and 3-si^ed: pith small, 

 somewhat 3-sided, continuous. 

 Buds small, sessile, several super- 

 posed in an axillary groove, with 

 a few pointed scales. Leaf-scars 

 alternate, low, shield-shaped with 

 acute lateral angles, fringed at 

 top: bundle-trace 1, rather large 

 and curved: stipule-scars lacking. 

 Leaves when present rather thin, 

 very hairy, entire, petioled. 



In addition to the two barely 

 differentiate cyrillas of the 

 southern United States, another 

 occurs in the West Indies and 

 still another in Brazil. Even these 

 are so similar to our northern 

 species that for some botanists 

 they constitute only varieties of it. 

 Twigs straw-colored, glabrous: leaves glabrous, green. 



Some leaves 10 cm. long. C. racemiflora. 



Leaves under 5 cm. long. C. parvifolia. 



