OLEACEAE 



Blue Ash 



Fraxinus quadrangulata Michx. 



HABIT. A medium-sized tree 40-50 feet high and 1-2 feet 

 in diameter (max. 120 by 3 feet); narrow, open crown. 



LEAVES. 8-12 inches long; 5-11 (usually 7) leaflets, lanceo- 

 late to ovate-oblong, 3-5 inches long, coarsely toothed, thick, 

 yellow-green above and paler below, glabrous, with short 

 petiolules. 



FLOWERS. In loose panicles; perfect; corolla absent; calyx 

 reduced to ring; appearing before the leaves. 



FRUIT. Oblong-ovate; 1-2 inches long; wing surrounding 

 the compressed seed cavity; falling soon after maturing. 



TWIGS. 4-angled and corky-winged; stout; orange-brown; 

 red-hairy. Winter buds: small, rounded, dark red-brown, some- 

 what hairy. 



BARK. Rather thin; gray; divided into platelike scales; often 

 shaggy; inner bark contains material which turns blue on 

 exposure. 



WOOD. Moderately important; similar to black ash. 



SILVICAL CHARACTERS. Similar to red ash; a scattered 

 tree. 



* * * 



Oregon Ash 



Fraxinus latifolia Benth. {Fraxinus oregona Nutt.) 



HABIT. A medium-sized tree 60-80 feet high and 2-3 feet 

 in diameter (max. 120 by 6 feet); narrow, compact crown. 



LEAVES. 5-14 inches long; 5-7 leaflets, ovate to elliptical, 

 3-7 inches long, entire or finely toothed, light green above and 

 usually hairy below, sessile or with petiolules up to Yz inch. 



FLOWERS. In compact panicles; dioecious; corolla absent; 

 appearing with the leaves. 



FRUIT. Oblong to elliptic; 1-2 inches long; wing extending 

 to below middle of slightly compressed seed cavity. 



TWIGS. Round; stout; woolly; red-brown. Winter buds; 

 Vs-IA: inch long, conical, brown, hairy. 



BARK. Thick; dark gray; deeply fissured with broad ridges. 



WOOD. Of slight importance; similar to white ash. 



SILVICAL CHARACTERS. Rather intolerant; moist sites; 

 mixed stands; the variety glabra Rehd. has glabrous leaves 

 and twigs. 



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