392 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



3. Polygala hemipterocarpa A. Gray, PI. Wright. 2: 31. 1853. 



Type locality: "Stony hills of the Sonoita, near Deserted Rancho, on the borders 

 of Sonora." 



Range: Western Texas to southern Arizona and adjacent Mexico. 

 Xi:\v Mexico: Carrizalillo Mountains (Mearns 42). 



4. Polygala macradenia A. Gray, PI. Wright. 1: 39. 1852. 



Type locality: Kills at the head of the San Felipe, western Texas. 

 Range: Western Texas to southern Arizona. 



New Mi; xk o: Upper Corner Monument; Guadalupe Mountains; San Andreas Moun- 

 tains. 



5. Polygala subspinosa S. Wats. Amer. Nat. 7: 299. 1873. 

 Type locality: Silver City, Nevada. 



Range: Colorado and Nevada to Arizona and New Mexico. 



X i:\v M kxico: Aztec {Baker). Dry hills, in the Upper Sonoran Zone. 



6. Polygala parvifolia (Wheelock) Woot. & Standi. 



Polygala lindheimeri parvifolia Wheelock, Mem. Torrey Club 2: 143. 1891. 

 Type locality: Foothills of the Santa Rita Mountains, Arizona. 

 Range: Southwestern New Mexico and southeastern Arizona. 

 New Mexico: Big Hatchet Mountains (Mearns 43). 



From P. lindheimeri this may at once be distinguished by the smaller size, puberu- 

 lenl instead of pubescent stems, smaller leaves, and smaller glabrous fruit. 



7. Polygala neomexicana Woot. & Standi. Contr. U. S. Nat. Herb. 16: 144. 1913. 

 Type locality: Miller Hill, Grant County, New Mexico. Type collected by 



Metcalfe in 1897. 



Range: Southwestern New Mexico and southeastern Arizona. 



New Mexico: Grant and Sierra counties. Dry hills, in the Upper Sonoran Zone. 



A species related to Polygala puberula, but differing in its taller, more slender 

 stems, larger, broader, thinner, nearly glabrous leaves, larger flowers, and larger puberu- 

 lent fruit. 



8. Polygala puberula A. Gray, PL Wright. 1: 40. 1852. 

 Type locality: Valley of the Limpio, western Texas. 

 Range: Western Texas to southern Arizona. 



New Mexico: Organ Mountains; Hillsboro; Queen; Mangas Springs; White and 

 Sacramento mountains. Dry hillsides, in the Upper Sonoran Zone. 



9. Polygala viridescens L. Sp. PI. 705. 1753. 

 Polygala sanguinea L. loc. cit. 



Type locality: "Habitat in Virginia." 



Range: Open slopes, New England to North Carolina, west to Minnesota and 

 New Mexico, in the Upper Sonoran Zone. 



We have seen no New Mexican specimens of this species, but Doctor Gray states 1 

 that it was collected by Fendler on "low prairies, near Las Vegas" (no. 109). It 

 is to be expected on the plains of northeastern New Mexico. 



Order 30. EUPHORBIALES. 



KEY TO THE FAMILIES. 



Styles and stigmas distinct or nearly so, cleft or 



foliaceous; ovary 3-celled; land plants. . . 81. EUPHORBIACEAE (p. 393). 

 Stj lee united by pairs; ovary 4-celled; aquatic 



plants 82. CALLITRICHACEAE (p. 405). 



1 Mem. Amer. Acad. n. ser. 4: 30. 1849. 



