WOOTON AND STANDLEY—FLORA OF NEW MEXICO, 469 
TypE Locatiry: Las Vegas, New Mexico. Type collected by Wislizenus in 1846 
(no. 473). 
Rance: Plains of northern New Mexico. 
New Mexico: Nara Visa; Las Vegas. Upper Sonoran Zone. 
9. Anogra leucotricha Woot. & Standl. Contr. U. 8. Nat. Herb. 16: 151. 1913. 
Type Locauiry: San Augustine Plains, New Mexico. Type collected by Wooton 
(no. 2735). 
RanGE: Plains of central New Mexico. 
New Mexico: San Augustine Plains; Willard. Upper Sonoran Zone. 
10. Anogra neomexicana Small, Bull. Torrey Club 23: 176. 1896. 
Type LocaLiry: Sandy bed of a creek near the Copper Mines, New Mexico. Type 
collected by Wright (no. 1068). 
Rance: Western New Mexico and adjacent Arizona. 
New Mexico: Magdalena; Santa Rita; Hop Canyon; Mogollon Mountains; Organ 
Mountains. Canyons, in the Upper Sonoran and Transition zones, 
11. Anogra amplexicaulis Woot. & Stand]. Contr. U.S. Nat. Herb. 16: 150. 1913. 
Typr Locatiry: Sandbar along the Mimbres River, New Mexico. Type collected 
by Metcalfe (no, 1054). 
Rance: Known only from the type locality. 
11. OENOTHERA L. EVENING PRIMROSE. 
Biennial or perennial herbs, 50 to 200 cm. high or more, with erect or spreading 
branching stems, alternate, mostly sessile, sometimes short-petioled leaves, and large 
yellow flowers; leaves mostly undulate-toothed, sometimes entire; hypanthium 
tube prolonged above the ovary, in one species very long; petals broad; ovary 
4-celled; seeds horizontal, prismatic, angled, in 2 or more rows in each cell. 
KEY TO THE SPECIES. 
Hypanthium tube 15 to 19 cm. long; stems spreading........-.-- 1. O. macrosiphon. 
Hypanthium tube 5 cm. long or less; stems erect. 
Petals 12 to 14 mm. long; stems simple; pubescence spread- 
Petals 30 mm. long or more; stems simple or branched; 
pubescence spreading or appressed. 
Pubescence cinereous or strigose, dense, grayish; plants 
1 to 2 meters high, much branched..............------ 3. O. wrigua. 
Pubescence mostly hirsute, loose, not grayish; plants 
usually less than 1 meter high, rarely branched. ..-.-- 4. O. hookeri. 
1. Oenothera macrosiphon Woot. & Standl. Contr. U. 8. Nat. Herb. 16: 155. 1913. 
Type Locaurry: Organ Mountains, New Mexico. Type collected by Wooton, 
August 29, 1894. 
Rana@e: Canyons in the Organ Mountains, New Mexico, in the Upper Sonoran 
Zone. 
A beautiful plant with larger flowers than any other species of the genus. It occurs 
in the Organs in deep rocky canyons, principally about the edges of pools. It has 
been called O. jamesii, but that species has much smaller flowers and abundant 
appressed pubescence. 
2. Oenothera procera Woot. & Standl. Contr. U. 8. Nat. Herb. 16: 156. 1913. 
Type tocauiry: Along Winsor Creek in the Pecos National Forest, New Mexico. 
Type collected by Standley (no. 4212). 
Ranar: New Mexico and Arizona to southern Colorado. 
