RUTACEAE 225 



RUTACEAE. Rue Family. 



About 100 genera and 1,000 species, mostly aromatic shrubs, 

 growing in the warmer parts of the world. Includes the various 

 citrous fruits, and several medicinal and ornamental ])lants. 



XANTHOXYLUM, Linnaeus. (Including Fayara. L.) 

 (Prickly Ash, etc.) 



Xanthoxylum Clava-Herculis, L. (A'. Carolinianuvn, Lam.) 



(Toothache Tree. Pillenterry.) 



A small tree, aromatic and prickly, with glossy deciduous pin- 

 nate leaves, and small greenish flowers, blooming in April. 



Sometimes cultivated for ornament or shade. The bark is an 

 active stimulant, and as such enters into the composition of various 

 medicines. The berries are also medicinal, but not officinal. 



Grows mostly in dry calcareous or phosphatic soil, protected 

 from fire, in the coastal plain. Escaped from cultivation in many 

 places, so that its natural range is uncertain. Nowhere common, 

 except perhaps near the coast. 



6 A. (?). Tuscaloosa County (Mohr). 



6C. Near Mon*^gomery ; perhaps not native. 



7. Hale, Marengo, Dallas and Montgomery Counties (Mohr). Cal- 

 careous creek bottoms about 3 and 7 miles south of Eutaw, Greene County. 

 Chalk bluffs near Demopolis. Used for firewood around Gallion (P. S. 

 Bunker). 



low. On limestone, Wilcox County. 



11 (?). Clarke County (Mohr). 



15. Alobile and Baldwin Counties (Mohr). 



Xanthoxylum Americanum, Alib. (Xorthkrx Prickly Ash) 



A prickly shrub, with dull green leaves. The bark is officinal, 

 like that of the preceding species. 



2B. Shale bluffs on Hurricane Creek near its mouh, Tuscaloosa 

 County. Also near Lock 14, a few miles farther up the Warrior River. 

 Very rare in Alabama. Otherwise known only from Georgia and north- 

 ward. 



PTELEA, Linnaeus, (Hop Trees). 



Ptelea trifoliata, L. 



A shrub or rarely a small tree, with ternate deciduous leaves, 

 greenish flowers in April, and wafer-like fruits about an inch in 

 diameter, in terminal clusters. Sometimes cultivated for orna- 

 m'='nt. One horticultural variety has been named. The bark, 



