530 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



2. Acalypha indica L., Sp. PL 1003. 1753. 



Paradise and Cave Creek, Chiricahua Mountains (Cochise County), 

 about 5,000 feet. Introduced from the Old World tropics. 



3. Acalypha neomexicana Muell. Arg., Linnaea 34: 19. 1865. 

 Verde Valley (Yavapai County), Pinal Mountains (Gila County), 



to Cochise and Pima Counties, 3,300 to 7,400 feet. New Mexico, 

 Arizona, and northern Mexico. 



4. Acalypha pringlei S. Wats., Amer. Acad. Arts and Sci. Proc. 20: 



373. 1885. 

 Quijotoa and Ajo Mountains (western Pima County), locally 

 abundant among rocks. Southern Arizona and Sonora. 

 A small shrub up to about 1 m. high. 



5. Acalypha lindheimeri Muell. Arg., Linnaea 34: 47. 1865. 



Acalypha lindheimeri var. major Pax and Hoffman, Pflan- 

 zenreich IV. 147 16 : 26. 1924. 



Mountains of Cochise and Pima Counties, 5,000 to 5,500 feet. 

 Texas to southern Arizona. 



The var. major represents a large-leaved, subglabrous variation 

 which is too ill defined for recognition, at least with the specimens 

 available. The neat foliage and the spikes of crimson flowers make 

 A. lindheimeri an attractive plant. 



7. TRAGIA 



Slender, often twining, perennial herbs clothed with stinging hairs, 

 these sometimes sparse; leaves alternate, stipulate, petiolate, simple 

 or compound, serrate; flowers monoecious, borne in bracteate racemes 

 disposed terminally or laterally but not in the axils ; staminate flowers 

 above, 2 to many, the sepals and stamens 3 to 5; pistillate flowers 

 1 or 2 below, the sepals 6, the ovary normally 3-celled, the ovules 

 solitary, the styles 3, more or less united below, entire, rugulose to 

 strongly papillose; seeds small, spheroidal, not carunculate. 



Key to the species 

 1. Leaves, except the uppermost, compound, with 3 leaflets, laciniately toothed. 



1. T. LACINIATA. 

 1. Leaves simple, toothed but more shortly so (2). 



2. Styles 1.9 to 3.8 mm. long, nearly smooth; racemes with 2 to 4 staminate 



flowers; stamens mostly 4 or 5, sometimes only 3 2. T. stylaris. 



2. Styles shorter, papillose; racemes with 6 to many staminate flowers; sta- 

 mens 3 3. T. NEPETAEFOLIA. 



1. Tragia laciniata (Torr.) Muell. Arg., Linnaea 34: 182. 1865. 



T. urticaejolia Michaux var. ? laciniata Torr., U. S. and Mex. 

 Bound. Bot. 200. 1859. 



Sycamore Canyon near Ruby, Sonoita Creek, Nogales (Santa Cruz 

 County), 3,500 to 4,000 feet, type collected "on the Sonoita" (Wright 

 1795). Southern Arizona and Sonora. 



2. Tragia stylaris Muell. Arg., Linnaea 34: 180. 1865. 



Apache County to Mohave County and northern Gila County, 

 also in the mountains of Cochise County, 5,200 to 6,900 feet. Colo- 

 rado and Texas to California and northern Mexico. 



