WOOTON AND STANDLEY—FLORA OF NEW MEXICO, 467 
1. Meriolix serrulata (Nutt.) Walp. Repert. Bot. 2: 79. 1843. 
Oenothera serrulata Nutt. Gen. Pl. 1: 246. 1818. 
Type Locautty: ‘‘From the river Platte to the mountains, on dry hills.’’ 
Rance: Manitoba and Minnesota to New Mexico and Texas. 
New Mexico: Nara Visa; Knowles; Lakewood; Redlands. Dry plains, in the 
Upper Sonoran Zone. 
10. ANOGRA Spach. 
Spreading biennials or perennials, 30 to 40 cm. high or less, somewhat woody at the 
base, with simple, more or less sinuate-toothed leaves and showy white flowers opening 
in the evening and at. night, turning rose pink the second day; cortex often papery 
and exfoliating, the stems often white and shining; buds drooping; ovules numerous, 
in a single row in the cell; capsules sessile, sometimes enlarged at the base, often 
woody, 4-celled, the seeds terete. 
KEY TO THE SPECIES. 
Tips of the calyx segments not free in bud, the buds merely 
acute.......2.2222222 2 fee ee eee eee ee eee eee eee eee 1. A. albicaulis. 
Tips of the calyx segments free, the buds abruptly acuminate. 
Throat of the calyx villous within. ..........--..-------- 2. A. coronopifolia. 
Throat of the calyx not villous. 
Plants glabrous throughout. ...........-..--------+--- 3. A. pallida, 
Plants not glabrous. 
Calyx appressed-pubescent, not at all hirsute. 
Plants grayish; leaves densely appressed- 
pubescent, slightly pinnatifid or entire. 4. A. gypsophila, 
Plants green; leaves sparingly pubescent, deep- 
ly pinnatifid. ............--.-.- seeeeee 5. A. runcinata. 
Calyx more or less villous or hirsute. 
Calyx merely villous, without appressed pubes- 
cence. 
All leaves petioled, nearly glabrous; cap- 
sules 20 to 25 mm. long; petals 18 to 
20 mm. long...........-.----------- 10. A. neomexicana. 
Upper leaves clasping, abundantly pubes- 
cent; capsules 35 mm. long or more; 
petals about 15 mm. long........... ll. A. amplexicaulis. 
Calyx with appressed pubescence as well as 
spreading hairs. 
Whole plant densely villous or hirsute. 
Leaves nearly entire, sessile......... 8. A. engelmanni. 
Leaves deeply pinnatifid, petioled.... 9. A. leucotricha. 
Plants with only a few spreading hairs, most 
of the pubescence appressed. 
Leaves with only a few shallow teeth, 
not hirsute...........-.-....- 6. A. latifolia. 
Leaves deeply pinnatifid, more or less 
hirsute...........2.-22.0------ 7. A. ctenophylla. 
1. Anogra albicaulis (Pursh) Britton, Mem. Torrey Club 5: 234. 1894. 
Oenothera albicaulis Pursh, Fl. Amer. Sept. 733. 1814. 
Oenothera pinnatifida Nutt. Gen. Pl. 1: 245. 1818. 
Type Locauity: ‘In Upper Louisiana.” 
RanGE: Montana and North Dakota to Mexico and Texas. 
