632 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



21. Oenothera lavandulaefolia Torr. and Gray, Fl. North Amer. 1: 



501. 1840. 



Galpinsia lavandulaefolia Small, FL Southeast. U. S. 845, 1335. 

 1903 (in part). 



Ten miles southeast of Tuba, Coconino County, 5,600 feet (Peebles 

 and Smith 13363), apparently the only collection in Arizona of the 

 typical form, which ranges from Wyoming to Texas and Arizona. 



Hypanthium and calyx strigose-canescent in the typical form. The 

 var. glandulosa Munz, with hypanthium and calyx glandular, occurs 

 in Navajo, Coconino, and Mohave Counties, 5,000 to 7,500 feet, dry 

 slopes and flats, May and June, ranging to Nevada, Colorado, and 

 Texas. 



22. Oenothera hartwegii Benth., PL Hartw. 5. 1839. 



Galpinsia hartwegii Britton, Torrey Bot. Club Mem. 5: 236. 



1894. 



The typical form, with leaves 1 to 3 mm. wide, the herbage generally 

 minutely glandular-pubescent throughout, sometimes subglabrous, 

 the hypanthium 5 to 8 mm. wide at top, and the petals 10 to 20 mm. 

 long, occurs in Apache, Navajo, Coconino, Cochise, and Santa Cruz 

 Counties, 4,500 to 7,500 feet, occasional on dry mesas, May to Sep- 

 tember, ranging from Texas to Arizona and Zacatecas. The var. 

 fendleri A. Gray, with leaves 3 to 6 mm. wide, the herbage subglabrous 

 throughout, the hypanthium 10 to 15 mm. wide at top in pressed 

 specimens, and the petals 20 to 25 mm. long, occurs rarely in Navajo 

 and Coconino Counties, ranging from Oklahoma and Texas to Ari- 

 zona. The var. toumeyi (Small) Munz (Galpinsia toumeyi Small), 

 with fascicles of small leaves in the main axils, the free tips of the 

 sepals 3 to 10 mm. long, and the petals less rhombic and more rounded 

 than in the other varieties, but intergrading freely with them, is 

 found in the Chiricahua, Huachuca, and Santa Rita Mountains 

 (Cochise and Pima Counties), 5,000 to 9,000 feet, rocky places, June 

 to September, occurring also in New Mexico, Sonora, and Chihuahua. 



23. Oenothera greggii A. Gray, Amer. Acad. Arts and Sci. Mem. 



ser. 2, 4: 46. 1849. 



Galpinsia greggii Small, Torrey Bot. Club Bui. 23: 186. 1896. 



This species is represented in Arizona by var. lampasana (Buckl.) 

 Munz (Oenothera lampasana Buckl., Galpinsia lampasana Woot. and 

 Standi.), which occurs from the White Mountains (Apache County) 

 to the mountains of Pinal, Cochise, Santa Cruz, and Pima Counties, 

 3,800 to 7,000 feet, occasional on limestone hills, April to June, 

 ranging from Oklahoma and Texas to southeastern Arizona. 



The characteristic form has spreading hairs, the leaves crinkled- 

 wavy, 5 to 9 mm. wide, the hypanthium 25 to 40 mm. long, and the 

 petals 15 to 30 mm. long. Some Arizona collections with narrower 

 leaves and hairs closely appressed (none spreading) approach var. 

 pringlei Munz of northern Mexico. 



24. Oenothera serrulata Nutt., Gen. PL 1: 246. 1818. 



Meriolix serrulata Raf., Amer. Month. Mag. 192. 1819. 



Apache County at Willow Spring (Palmer 481), Navajo County at 

 Forestdale (Hough 83) and Fort Apache (Mrs. Hoyt, Thornber). 



