B40 



WHITETHORN 



Ceano'thus cordula'tus 



Flowers small, white, numer- 

 ' ous, each on a slender flower- 

 stalk, borne in clusters (pan- 

 icles), showy when massed 



Leaves alternate, distinctly 3- 

 ribbed from base, stalked, almost 

 hairless to somewhat hairy, usu- 

 ally small (from % to IK in. long), 

 elliptic to egg-shaped, blunt at 

 tip, sometimes somewhat heart- 

 shaped at base, entire or finely 

 toothed around edges 



Twigs rigid, stout, whitish, 

 spine-tipped 



Petals 5, long-clawed, hooded, 

 with 5 protruding stamens 

 opposite them 



Lower and outer flower parts 

 (sepals) 5, whitish, bent in- 

 ward so that tips meet, united 

 below into a cup-like base 

 (calyx disk) adherent to seed- 

 producing organ (ovary) to 

 which petals and stamens are 

 attached 



Seed pod (capsule) small, tip- 

 ped by threadlike 3-forked ap- 

 pendage (style), 3-lobed, each 

 lobe with ridge on its back, 3- 

 celled, each cell bearing one 

 hard "seed" (nutlet) 



