Bailey & Bailey: Woody Plants of National Parks 



205 



Leaflets toothed; flower clusters leafless, borne in axils of the leaves; corolla 



composed of 2 narrow petals; found in California parks 



I. F. dipeiala. 



Leaflets mostly not toothed; flower clusters terminal on leafy shoots; corolla 



divided into 4 linear lobes; found in the Grand Canyon 



2. F. cuspidala var. niacropetala. 



Leaves mostly not divided into separate leaflets; flowers green, the petals none 



3. F. anomala. 



L Two-petal Ash (Fraxinus dipetala H. & A.). — Spreading shrub 



5 to 25 feet high with numerous slender stems from the base; leaves opposite, 



divided into usually 5 leaflets; leaflets % to I1/2 inches long, broadly elliptic 



to egg-shaped, the margins toothed; flowers white, the petals 2, about I/4 inch 



long, borne in narrow clusters 2 to 4 inches long, the clusters usually several in 



the leaf-axils; fruits small winged seeds % to 1 inch long, the wings oblong, 



sometimes notched at the tips. This species occurs principally in canyons or 



on mountain slopes in the foothill regions of California where it is also 



known as flowering ash. The herbage is browsed by deer. 



Occurrence. — YOSEMITE, rare near western park boundary: El Portal, 2,500 feet. 

 SEQUOIA, occasional: west of Panorama Point, 3,000 feet. 



44=^;^=^ 



2. Southwestern Fragrant Ash (Fraxinus cuspidata Torr. var. 

 macropetala (Eastw.) Rehd.), fig. 123. — Tall spreading shrub with ash- 

 colored bark; leaflets 3 to 5, egg- 

 shaped to oval or roundish, ^2 to 

 II/4 inches long, the terminal leaf-, 

 let often larger than the lateral, 

 mostly not toothed; flowers frag- 

 rant, borne in loosely branched 

 clusters at the ends of leafy 

 branchlets, the clusters erect in 

 flower, drooping in fruit; corolla 

 about I/2 inch long, divided into 4 

 linear lobes, green at first, becom- 

 ing white; fruits narrowly oblong, 

 % to 1 inch long. (Syn. F. 

 macropetala Eastw.). 



Occurrence. — GRAND CANYON, in 

 the canyon, on the redwall limestone 

 formation on both sides of the Colo- 

 rado River, 4,500 to 6,000 feet: Bright 

 Angel trail; below Huxley Terrace; Pig. 123. Southwestern fragrant ash (Fraxinus 

 Kaibab trail above Devil's Backyard, cuspidata var. macropetala). 



3. Singleleaf Ash (Fraxinus anomala Wats.), fig. 124.— Shrub or 

 small tree 5 to 30 feet high, the branchlets 4-sided; leaf-blades roundish to 

 broadly egg-shaped with broad wedge-shaped base, % to 2 inches long, some- 

 times divided into 3 leaflets, dark green, smooth, somewhat leathery, not 

 toothed or with few coarse teeth; flowers green, borne in clusters in the leaf- 



