FLOWERING PLANTS AND FERNS OF ARIZONA 311 



1. Drymaria fendleri S. Wats., Amer. Acad. Arts and Sci. Proc. 17: 328. 



1882. 

 Coconino and Cochise Counties, 5,000 to 6,000 feet, thickets, etc., 

 September. New Mexico, Arizona, and Mexico. 



2. Drymaria pachyphylla Woot. and Standi., Contrib. U. S. Natl. 



Herbarium 16:121. 1913. 



Chiricahua Mountains, Cochise County {Jones in 1931). Western 

 Texas to southeastern Arizona and northern Mexico. 



The plant is very poisonous to cattle and sheep, as has been demon- 

 strated by feeding experiments, but fortunately animals avoid it 

 when other feed is obtainable. The species is related to D. holo- 

 steoides Benth. of Baja California, but differs in several important 

 characters. 



3. Drymaria sperguloides A. Gray, Amer. Acad. Arts and Sci. Mem. 



ser. 2, 4:11. 1849. 

 Apache County to Mohave County, south to Cochise, Santa Cruz, 

 and Pima Counties, 4,000 to 8,000 feet, open places, August and 

 September. Western Texas to Arizona. 



4. Drymaria tenella A. Gray, Amer. Acad. Arts and Sci. Mem. ser. 



2,4:12. 1849. 

 Coeonino County to Cochise and Pima Counties, dry pine woods, 

 August and September. New Mexico, Arizona, and Mexico. 



5. Drymaria effusa A. Gray, PL Wright 2:19. 1853. 



Cochise, Santa Cruz, and Pima Counties, 6,000 to 7,500 feet, dry 

 pine woods and among rocks, August and September. Southeastern 

 Arizona and northern Mexico. 



Glabrous individuals are occasional in Arizona. 



6. Drymaria depressa Greene, Leaflets 1:153. 1905. 



Hannigan Meadow, White Mountains, Greenlee County, 9,500 feet 

 (Kearney and Peebles 12374). New Mexico and eastern Arizona. 

 Perhaps not specifically distinct from D. effusa. 



7. LOEFLINGIA 



Plants annual, small; stems branched from the base, stiff; leaves 

 subulate, rigid; flowers axillary, inconspicuous; petals 3 to 5, some- 

 times wanting; capsule longitudinally 3-valved. 



1. Loeflingia squarrosa Nutt. ex. Torr. and Gray, Fl. North Amer. 



1:174. 1838. 

 Pinal and Pima Counties, 1,300 to 3,000 feet, March and April. 

 Southern Arizona and California. 



8. ACHYRONYCHIA 



Plant annual, glabrous or nearly so; stems branched, prostrate; 

 flowers in axillary clusters; perianth segments in one series, the blades 

 white, petallike, the claws united; stamens 10 to 15, few of them 

 fertile; style 2-cleft; fruit 1 -seeded, indehiscent. 



