Bailey & Bailey: Woody Plants of National Parks 149 



Occurrence. — ZION, common in the canyons, 3,700 to 4,300 feet: talus slopes along 

 Zion Canyon road above public campgrounds. GRAND CANYON, 4,000 to 8,800 feet. 

 North Rim, near the rim and just below: Bright Angel Point; Walhalla Plateau along 

 road to Cap)e Royal; Powell Plateau; Point Sublime. South Rim, rare; rim in front of 

 El Tovar; Dripping Springs. Canyon, common north of Colorado River aboi'e the 

 Tonto: Kaibab trail above Roaring Springs; Cottonwood Camp. 



Fremont Dalea, Desert Beauty (Dalea Fremonti Torr. var. ]ohn- 

 soni (Wats.) Munz.), fig. 84. — A low shrub, 1 to 3 feet high; herbage 

 grayish; leaves composed of opposite pairs of leaflets; leaflets narrowly oblong, 

 1/3 to 2/3 inch long, with several small glancb on the under surface; flowers 

 purplish-blue, pea-like, about 1/3 to I/2 inch long, borne at the ends of the 

 branchlets in dense clusters 1 to 5 inches long; fruits tiny pods about 1/3 inch 

 long, egg-shaped, tapering abruptly to a slender up-curving point; seeds 2. 

 (Syn. Parosela Johnsoni Vail.) 



Occurrence. — ziON : Coalpits Wash, 3,700 feet; Shunes Creek. 



Lupine (Lupinus L.) 



The lupines are easily recognized because of the erect spikes of pea-like 

 flowers and the roundish leaf-blades divided from the base into several oblong 

 or more or less wedge-shaped leaflets. The name Liip.nns is derived from 

 the Latin, Lupus, meaning wolf, from the early erroneous idea that these 

 plants robbed the soil of its fertility. Instead they aid the soil by building 

 up the nitrogen content. The roots of all members of the pea family harbor 

 bacteria which are able to take nitrogen from the air and make it into com- 

 pounds available to the plants. Although there are numerous species of 

 lupine in the western national parks, very few of them are shrubby and then 

 usually only at the base. 



Field Guide to the Species 



Shrub 2 to 6 feet high; leaflets densely silky; flowers blue or purple, 1/3 to |/2 



inch long I. L. alhlfrons. 



Herbaceous plants woody at base only; leaves and flowers various. 



Plants low, 2 to 6 inches high, often forming piostrate mats; alpine species. 



Leaflets 7 to 10, \/j, to nearly 1 inch long; flower clusters oval to oblong, 1 

 to 2 inches long; flowers violet, with yellowish or whitish center. 

 2. L. Brewerl. 



Leaflets 5 or 6, 1/6 to '/2 inch long; flower clusters mostly head-like; 



flowers lavender to white 3. L. LpalU. 



Erect plants mostly more than 6 inches high. 



Lower leaf-stalks mostly I to 5 or 7 inches long; flowers '/2 inch or more 

 long; found in California parks. 



Plants J/2 to 1 foot high; herbage densely hairy; flowers '/2 inch long, 



blue with yellow centers 4. L. Crapi. 



Plants 1 to 2 feet high; leaf-blades thinly hairy or smooth above, 



hairy below; flowers '/2 to % inch long, blue or pinkish 



5. L. laxiflorus. 



Lower leaf -stalks % to I % inches long; flowers about '/^ inch long; occurs 



in the Southwest 6. L. meionanihus. 



