WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 705 



6. Bidens heterospenna A. Gray, PI. Wright. 2: 90. 1853. 



Type locality: Near the Copper Mines, New Mexico. Type collected by Wright 

 Ib 1851. 



Range: Mountains of southern Arizona and New Mexico. 

 We have seen no further collections from New Mexico. 



7. Bidens cognata Greene, Leaflets 1: 149. 1905. 



Type locality: Sawyers Peak, Black Range, New Mexico. Type collected by 

 Metcalfe (no. 143G). 



Range : Mountains of New Mexico. 



New Mexico: Hurrah Creek; Sawyers Peak; West Fork of the Gila. Transition 

 Zone. 



8. Bidens tenuisecta A. Gray, Mem. Amer. Acad. n. ser. 4: 86. 1849. 



Type locality: "Margins of Poni Creek (between Bent's Fort and Santa Fe)," 

 New Mexico. Type collected by Fendler (no. 449). 



Range: Idaho and Colorado to Mexico. 



New Mexico: Farmington; Chama; Santa Fe and Las Vegas Mountains; Raton; 

 Ensenada; Pajarito Park; Cleveland; Sandia Mountains; Middle Fork of the Gila; 

 White and Sacramento mountains. Wet ground , in the Upper Sonoran and Transition 

 Zones. 



67. HETEROSPERMUM Cav. 



Small slender glabrous annual with opposite, pinnately or ternately dissected 

 leaves, and small heads of yellow flowers; involucre in 2 series, the outer of 3 to 5 linear 

 foliaceous bracts, the inner of oval striate ones; outer achenes oval, without pappus, 

 the inner usually infertile, subulate, attenuate to a scabrous beak. 



1. Heterospermum pinnatum Cav. Icon. PI. 3: 34. jpl. 267. 1794. 



Heterospermum tagetinum A. Gray, Mem. Amer. Acad. n. ser. 4: 87. 1849. 



Type locality: "Habitat in Nova-Hispania." 



Range: Western Texas to Arizona and southward. 



New Mexico: Glorieta; Gallinas Mountains; Hurrah Creek; Mogollon Motmtaius; 

 Hanover Mountain; Kingston; Organ Mountains; \^1iite Mountains; Gray. Open 

 hills, in the Upper Sonoran and lower part of the Transition zones. 



The type of H. tagetinum was collected west of Las Vegas by Fendler (no. 534). 



68. ECLIPTA L. 



Annual with procumbent or ascending stems and opposite, lanceolate or oblong, 

 sparingly serrate leaves; heads small, solitary, white-flowered; rays short; disk flowers 

 perfect; involucral bracts 10 to 12, in 2 rows, foliaceous, ovate-lanceolate; receptacle 

 flat; achenes short, 3 or 4-angled, roughened or the sides, haiiy at the summit; pappus 

 none or an obscure crown. 

 1. EcUpta alba (L.) Hassk. PI. Jav. Rar. 528. 1848. 



Verbesina alba L. Sp. PI. 902. 1753. 



Eclipta erecta L. Mant. PL 2: 286. 1771. 



Type locality: "Habitat in Virginia, Surinamo." 



Range: New Jersey and Texas to New Mexico and southward throughout the 

 tropics. 



New Mexico: Albuquerque; Organ Mouctains; Mesilla Valley; Roswell. Along 

 ditch banks and in wet ground, in the Lower Sonoran Zone. 



69. RATIBIDA Raf. Cone flower. 



Perennial herbs with pirmately parted alternate leaves and long-pedunculate ter- 

 minal heads, with showy yellow to brownish purple, drooping rays; disk yellowish, 

 turning darker; achenes short, broad, compressed, sometimes winged on the edges; 

 pappus a chaffy or aristiform tooth over one or both edges, or wanting. 

 52576°— 15 45 



