VVOOTON AND STANDLEY FLOEA OF NEW MEXICO. 295 



KEY TO THE SPECIES. 



Stamens much shorter than the sepals; flowers dull greenish 

 white. 



Petioles not liirsute ; hypantliium 2 to 3.5 mm. high 1. H. parvi/olia. 



Petioles hirsute; hypanthium 3 to 5 mm. high. 



Petals spatulate, almost clawless, not exceeding the 



sepals 2. H. novomexicana. 



Petals obovate-spatulate, distinctly clawed, exceeding 



the sepals 3. //. wootoni. 



Stamens longer than the sepals; flowers more or less rose-colored. 

 HylJantliium deeply turbinate, fully twice as long as broad 



and nearly t'ndce as long as the sepals 4. H. leptomeria. 



Hypantliium campanulate, turbinate only at the base, not 

 more than half longer than broad and scarcely sur- 

 passing the sepals. 

 Hypanthium with the sepals 5 mm. long; plants tall, 



15 to 20 cm. high 5. H. versicolor. 



Hypanthium 4 mm. long or less; plants less than 15 

 cm. high. 

 Hj^antluum 4 mm. long; inflorescence secimd, 



dense 6. H. pulchella. 



Hypantliium 3 mm. long; inflorescence not secund, 



loose 7. H. nana. 



1. Heuchera parvifolia Nutt.; Terr. & Gray, Fl. N. Amer. 1: 581. 1840. 

 Eeuchera flavescens Rydb. N. Amer. Fl. 22: 114. 1905. 



Type locality: "Blue Mountains of Oregon 



>> 



Range: Oregon and Alberta to Arizona and New Mexico. 



New Mexico: Chama; Stinking Lake; Raton; Santa Fe and Las Vegas mountains; 

 Magdalena Mountains; Organ Mountains. Damp woods, in the Transition and Cana- 

 dian zones. 



Tliis species and the next two usually occur in rich soil on cool shady hillsides under 

 trees in the mountains of the State at middle or high elevations. They closely resem- 

 ble each other in general appearance and are never very abundant or conspicuous. 



The type of H. flavescens was collected in Santa Fe Canyon {Heller 3693). 



2. Heuchera novomexicana Wheelock, Bull. Torrey Club 17: 200. 1890. 



Type locality: Santa Rita, New Mexico. Type collected bj-- Wright (no. 1098). 

 Range: Mountains of New Mexico and Arizona. 



New Mexico: Santa Rita; Sawyers Peak; Rio Apache. Transition and Canadian 

 zones. 



3. Heuchera wootoni Rydb. N. Amer. Fl. 22: 113. 1905. 



Type locality: Gilmores Ranch, Wliite Mountains, New Mexico. Type collected 

 by Wooton(no. 283). 



Range: Damp woods, White and Sacramento mountains of New Mexico, in the 

 Transition Zone. 



4. Heuchera leptomeria Greene, Leaflets 1: 112. 1905. 



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

 tember 17, 1893. 



Range: Moist slopes. Organ Mountains of New Mexico, in the Transition Zone. 



This pretty plant grows in cre\dces of rocks on bold rocky cliffs where there is 

 water from a seep or spring. Its rootstocks are thick and crowded, bearing numerous 

 radiating leaves and delicate pale rose-colored flowers. 



