WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 705 
6. Bidens heterosperma A. Gray, Pl. Wright. 2: 90, 1853. 
Tyre Loca.iry: Near the Copper Mines, New Mexico. Type collected by Wright 
in 1851. 
Ranee: 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 LocaLiry: Sawyers Peak, Black Range, New Mexico. Type collected by 
Metcalfe (no. 1436). 
Rance: 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 Pofii Creek (between Bent’s Fort and Santa Fe),”’ 
New Mexico. Type collected by Fendler (no. 449). 
Rance: 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; 
Whiteand 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. Pl. 3:34. pl. 267. 1794. 
Heterospermum tagetinum A. Gray, Mem. Amer. Acad. n. ser. 4: 87, 1849. 
Type Locauiry: ‘Habitat in Nova-Hispania.”’ 
Rance: Western Texas to Arizona and southward. 
New Mexico: Glorieta; Gallinas Mountains; Hurrah Creek; Mogollon Mountains; 
Hanover Mountain; Kingston; Organ Mountains; White 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, hairy at the summit; pappus 
none or an obscure crown. 
1. Eclipta alba (L.) Hassk. Pl. Jav. Rar. 528. 1848, 
Verbesina alba L. Sp. Pl. 902. 1753. 
Eclipta erecta L. Mant. Pl. 2: 286. 1771. 
Type Locatity: “Habitat in Virginia, Surinamo.”’ 
Ranae: New Jersey and Texas to New Mexico and southward throughout the 
tropics. 
New Mexico: Albuquerque; Organ Mourtains; Mesilla Valley; Roswell. Along 
ditch banks and in wet ground, in the Lower Sonoran Zone. 
69. RATIBIDA Raf. CoNE FLOWER. 
Perennial herbs with pinnately 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 
