WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 461 



2. GATJRA L. 



Annual, biennial, or perennial herbs with alternate, mostly narrow and small 

 leaves, and small, red or pink flowers in terminal, sometimes elongated, racemes; 

 hypanthium prolonged beyond the ovary; sepals and petals 4, the latter clawed and 

 unequal; stamens usually 8, declined; ovary 4-celled; style declined; stigmas 4-lobed, 

 surrounded by a cuplike border; fruit nutlike, ribbed or angled, indehiscent. 



KEY TO THE SPECIES. 



Anthers oval, attached near the middle 1. G. parviflora. 



Anthers linear or narrowly oblong, attached near the base. 

 Fruit glabrous. 



Branches of the inflorescence, bracts, and calyx glandu- 

 lar 2. G. glandulosa. 



Plants not glandular. 



Leaves deeply lobed or sinuate-dentate. 



Buds glabrous; bracts broadly obovate, acumi- 

 nate 3. G. brassicacea. 



Buds strigillose; bracts ovate or ovate- lanceolate, 



acute 4. G. strigillosa. 



Leaves entire or merely shallowly repand-dentate. 



Buds strigillose; fruit not stipitate 5. G. gracilis. 



Buds glabrous; fruit short-stipitate 6. G. podocarpa. 



Fruit pubescent. 



Fruit on long slender stipes. 



Branches of the inflorescence glabrous 7. G. villosa. 



Branches of the inflorescence cinereous 8. G. cinerea. 



Fruit not on long slender stipes, sessile or with a short 

 thick angled stipe. 

 Fruit not constricted below the middle, with spread- 

 ing pubescence 9. G. neomexicana. 



Fruit constricted below the middle, appressed- 

 pubescent. 



Stems strigose to hirsute 10. G. coccinea. 



Stems glabrous. 



Bracts linear, acute, much exceeding the 



ovaries 11. G. induta. 



Bracts lanceolate or ovate, acuminate, much 



shorter than the ovaries 12 . G. linearis. 



1. Gaui-a parviflora Dougl.; Hook. Fl. Bor. Amer. 1: 208. 1830. 

 Type locality: "Sandy banks of the Wallahwallah River." 

 Range: Washington and North Dakota to Louisiana and Mexico. 

 New Mexico: Throughout the State. Lower and Upper Sonoran zones. 



2. Gaura glandulosa Woot. & Standi. Contr. U. S. Nat. Herb. 16: 153. 1913. 

 Type locality: Reserve, New Mexico. Type collected by Wooton, July 9, 1906. 

 Range: Mogollon Mountains of New Mexico, in the Transition Zone. 



3. Gaura brassicacea Woot. & Standi. Contr. U. S. Nat. Herb. 16: 152. 1913. 

 Type locality: Socorro, New Mexico. Type collected by G. R. Vasey in 1881. 

 Range: Known only from type locality. 



4. Gaura strigiUosa Woot. & Standi. Contr. U. S. Nat. Herb. 16: 152. 1913. 

 Type locality: Wingfields Ranch on Ruidoso Creek, White Mountains, New 



Mexico. Type collected by Wooton, July 8, 1895. 

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



