ROSE AND STANDLEY—PLANTS FROM THE PINACATE REGION, 17 
Here may be inserted the description of another species of Euploca 
from southwestern Texas. 
Evuprioca RACEMOSA Rose & Standley, sp. nov. 
Low, much branched annual, about 30 cm. high; stems slender, spreading, stri- 
gose; leaves elliptic, 20 to 25 mm. long, acute at both ends, strigose, all on very short 
petioles (2 to 4mm. long); flowers mostly axillary forming slender, one-sided racemes; 
leaves of the inflorescence much reduced; calyx lobes linear-lanceolate, 5 or 6 mm. 
long, strigillose; corolla white, its limb 7 mm. in diameter; style long and slender, 
the stigma penicillate; fruit smooth, strigillose. 
Type in the U. 8. National Herbarium, no. 45192, collected in southwestern Texas, 
between September, 1879, and October, 1880, by Dr. Edward Palmer (no, 889). 
This is distinguished from Euploca convolvulacea by its smaller corolla, different 
inflorescence, and shorter petioles. 
Verbena bracteosa Michx. Fl. Bor. Amer. 2: 13. 1803. 
Type locality, ‘In regione Illinoensi et in urbe Nash-ville.”’ 
Pinacate Mountains, at 900 to 1,200 meters, November 21, 1907, MacDougal 73. 
The specimens are unusually villous but otherwise seem to belong here. 
Ramona capitata (A. Gray) Briq. Bull. Herb. Boiss. 2: 440. 1894. 
Audibertia capitata A. Gray, Proc. Amer. Acad. 7: 387. 1868. 
Type locality, ‘Summit of Providence Mountain, Mohave Desert.” 
Pinacate Mountain, November 21, 1907, MacDougal 72. 
Datura discolor Bernh. Linnaea. 8: Litt. Ber. 138. 1833. 
Type locality, ‘‘Hab. in India occidentali.”’ 
Walls Well, Ajo Mountains, November 7, 1907, MacDougal. 
Nicotiana trigonophylla Dunal in DC. Prodr. 131: 562. 1852. 
Type locality, ‘‘In Mexico ad Aguas calientes.”’ 
Papago Tanks, Sonora, November 17, 1907, MacDougal 41. 
Physalis cardiophylla Torr. Bot. Mex. Bound. 153. 1859. 
Type locality, “‘Sonora and California, desert of the Colorado.” 
Papago Tanks, Sonora, November 17, 1907, MacDougal. 
Solanum hindsianum Benth. Bot. Voy. Sulph. 39. 1844. 
Type locality, ‘‘Bay of Magdalena,’’ Lower California. 
Pinacate Mountains, November 19, 1907, MacDougal. 
Antirrhinum chytrospermum A. Gray, Proc. Amer. Acad. 12: 81. 1877. 
Type locality, ‘‘Ehrenberg, Arizona.” 
Papago Tanks, Pinacate Mountains, November 16, 1907, MacDougal 44. 
Chilopsis linearis (Cav.) Sweet, Hort. Brit. 283, 1827. 
Bignonia ? linearis Cav. Icon, Pl. 8:35. pl. 269. 1794. 
Type locality unknown. 
Walls Well, Ajo Mountains, November 8, 1907, MacDougal 6. 
Anisacanthus thurberi (Torr.) A. Gray, Syn. FI. 2': 328. 1886. 
Drejera thurberi Torr. Bot, Mex. Bound. 124. 1859. 
Type locality, ‘‘ Along water-courses, Las Animas, Sonora.”’ 
Walls Well, Ajo Mountains, November 7, 1907, MacDougal 10. This plant is 
known as tuparosa, probably a corruption of chuparosa—‘‘ humming-bird flower.”’ 
Ptiloria tenuifolia (Torr.) Raf. Atl. Journ. 145. 1832. 
Prenanthes ? tenuifolia Torr. Ann. Lyc. N. Y. 2: 210. 1828. 
Lygodesmia minor Hook. Fl. Bor. Amer. 1: 205. 1833. 
Type locality, ‘‘Rocky Mountains.”’ 
Pinacate Mountains, November 15, 1907, MacDougal 34. 
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