WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 323 



2. Amelanchier crenata Greene, Pittonia 4: 127. 1900. 



Type locality: On rock declivities near Aztec, New Mexico. Type collected by 

 Baker (no. 377). 

 Range: Northwestern New Mexico. 

 New Mexico: Northern San Juan County. Dry hills, in the Upper Sonoran Zone. 



3. Amelanchier bakeri Greene, Pittonia 4: 128. 1900. 

 Type locality: Los Pinos, southern Colorado. 



Range: Southwestern Colorado and western New Mexico, probably in eastern 

 Arizona. 



New Mexico: Magdalena Mountains; Silver City; Bear Mountain; Canjilon. 

 Mountains, in the Transition Zone. 



4. Amelanchier polycarpa Greene, Pittonia 4: 127. 1900. 

 Type locality: Piedra, southern Colorado. 



Range: Wyoming to Colorado and New Mexico. 



New Mexico: Zuni Mountains; Chama; Stinking Lake. Damp woods, in the 

 Transition Zone. 



5. Amelanchier goldmanii Woot. & Standi. Contr. U. S. Nat. Herb. 16: 131. 1913. 

 Type locality: Copper Canyon, Magdalena Mountains, New Mexico. Type 



collected by E. A. Goldman in 1909. 

 Range : Mountains of western New Mexico. 

 New Mexico: Copper Canyon; Mogollon Mountains. 



6. Amelanchier oreophila A. Nels. Bot. Gaz. 40: 65. 1905. 

 Type locality: Evanston, Wyoming. 



Range: Northern New Mexico to Colorado and Wyoming. 



New Mexico: Santa Fe and Las Vegas mountains. Mountains, in the Transition 

 Zone. 



7. Amelanchier mormonica C. Schneid. Handb. Laubh. 1: 740. 1906. 

 Type locality: Mormon Lake, Arizona. 



Range: Arizona and New Mexico. 



New Mexico: Dulce; Sandia Mountains; Chama; Timitcha Mountains. Hillsides, 

 in the Transition Zone. 



8. Amelanchier australis Standley, Proc. Biol. Soc. Washington 26: 116. 1913. 

 Type locality: Ropes Spring, San Andreas Mountains, New Mexico. Type col- 

 lected by Wooton, September 23, 1912. 



Range: Known only from type locality, in the Upper Sonoran Zone. 



2. CRATAEGUS L. Hawthorn. 



Shrubs or small trees with stout spiny stems, simple, alternate, toothed or lobed 

 leaves, and white flowers in corymbs; hypanthium urceolate, adnate to the ovary; 

 sepals 5, persistent; petals 5, spreading; stamens 5 to 10; fruit small, drupaceous, 

 containing 2 to 5 bony 1-seeded carpels. 



KEY TO THE SPECIES. 



Spines short, 2 cm. long or less, not very numerous; leaves mostly 

 elliptic, not noticeably lobed, the blades about twice as long 



as wide 1 . C. rivularis. 



Spines longer, 4 cm. or more, commonly numerous; leaves broader, 

 at least some of them more or less lobed. 

 Leaves elliptic-ovate, rather coarsely serrate, some of them 

 with a few larger lobelike teeth, the smaller teeth gland- 

 tipped; leaves cuneate at the base. 2. C. erythropoda. 



Leaves broadly ovate, with 3 or 4 pairs of broad lobes, finely 

 serrate or doubly seirate with straight teeth, not gland- 

 tipped; base of leaves truncate 3. C. wootoniana. 



