392 COISTTEIBUTIONS FROM THE NATIONAL HEEBAEIUM. 



3. Polygala hemipterocarpa A. Gray, PL 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. 

 New Mexico: Carrizalillo Mountains (Ifearns 42). 



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



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

 Range: Western Texas to southern Arizona. • 



New Mexico: Upper Comer Monument; Guadalupe Mountains; San Andreas Moun- 

 tains. 



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

 Type locality: Silver City, Nevada. 



Range: Colorado and Nevada to Arizona and New Mexico. 

 New Mexico: Aztec (Baker). Dry hills, in the Upper Sonoran Zone. 



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



Polygala lindheimeri parvifolia A^Tieelock, 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- 

 lent 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 Coimty, New Mexico. Tj^je collected by 



Metcalfe in 1897. 



Range: Southwestern New Mexico and southeastern Arizona. 



New Mexico: Grant aud Sierra counties. Dry hills, iu 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, PI. Wright. 1: 40. 1852. 

 Type locality: Valley of the Limpio, western Texas. 

 Range: AVestern 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' 

 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). 

 Styles united by pairs; ovary 4-celled; aquatic 



plants 82. CALLITBICHACEAE (p. 405). 



* Mem. Amer. Acad. n. eer. 4: 30. 1849. 



