WOOTON AND STANDLEY FLORA OF NEW MEXICO. 469 



Type locality: Las Vegas, New Mexico. Type collected by Wislizenus in 1846 

 ^no. 473). 

 Kange: Plains of northern New Mexico. 

 New Mexico: Nara Visa; Las Vegas. Upper Sonoran Zone. 



9. Anogra leucotricha Woot. & Standi. Contr. U. S. Nat. Herb. 16: 151. 1913. 

 Type locality: 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 locality: Sandy bed of a creek near the Copper Mines, New Mexico. Type 

 collected by Wright (no. 1068). 



Range: 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. & Standi. Contr. U. S. Nat. Herb. 16: 150. 1913. 

 Type locality: Sandbar along the Mimbres River, New Mexico. Type collected 



by Metcalfe (no. 1054). 

 Range : 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; hj-panthium 

 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 . 0. macrosiphon. 



Hypanthium tube 5 cm. long or less; stems erect. 



Petals 12 to 14 mm. long; stems simple; pubescence spread- 

 ing 2. 0. procera. 



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. 0. irrigua. 



Pubescence mostly hirsute, loose, not grayish; plants 

 usually less than 1 meter liigh, rarely branched 4. 0. hookeri. 



1. Oenothera macrosiphon Woot. & Standi. Contr. U. S. Nat. Herb. 16: 155. 1913. 

 Type locality: Organ Mountains, New Mexico. Type collected by Wooton, 



August 29, 1894. 



Range: 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 Orgjins in deep rocky canyons, principally about the edges of pools. It has 

 been called 0. jamesii, but that species has much smaller flowers and abundant 

 appressed pubescence. 



2. Oenothera procera Woot. & Standi. Contr. U. S. Nat. Herb. 16: 156. 1913. 

 Type locality: Along Whisor Creek in the Pecos National Forest, New Mexico. 



Type collected by Standley (lo. 4212). 

 Range: New Mexico and Arizona to southern Colorado. 



