June, 1910.] 
The Genus Fraxinus in Ohio. 
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times bisporangiate, usually diecious, in bractless pannicles, 
isobilateral, usually apetalous and dicyclic, but some of the 
primitive forms with a corolla; cycles tisually tetramerous or 
dimerous; calyx when present usually campanulate, persistent 
or deciduous, sometimes much reduced; stamens united with the 
base of the corolla when present; pollination usually anemapholus; 
ovularv biocular, ovules two in each cavity; fruit a one seeded 
samara; seed pendulous. 
1. Fraxinus quadrangulata Mx. Blue Ash. Twigs glabrous 
or very slightly pubescent when young, 4 sided, sometimes sharply 
4- angled leaflets 7-11, ovate to oblanceolate, green on both sides, 
sharply serrate or serrulate, long acuminate, upper leaflets usually 
sessile, lower ones short petioled; flowers bisporangiate; corolla 
wanting, calyx reduced to an obscure ring; samara linear oblong, 
IX to 2 inches long, 3-8 to )/ 2 inches wide, blunt, body extending 
half way to the apex. On rich limestone hills and sometimes 
in fertile valleys. Ottawa, Hancock, Auglaize, Franklin, Licking, 
Montgomery, Highland, Ross, Brown, Adams. 
2. Fraxinus nigra Marsh. Black Ash. Twigs and usually 
the leaves glabrous; leaflets 7-11, sessile, green on both sides, 
sometimes quite pubescent along the mid-rib, serrate or serrulate, 
2Rj to 6 inches long, 1 to \y 2 inches wide, ovate-lanceolate, with 
a long, tapering acuminate apex and a narrow or rounded base; 
flowers imperfectly bisporangiate; samara oblong to linear-oblong, 
1 to 1 5-8 inches long, X to 3-8 inches wide; calyx wanting; 
wing all around the flat body which extends to beyond the 
middle. In swamps and wet woods. General in northern part 
of the state, south to Preble, Green, Franklin and Harrison. 
3. Fraxinus pennsylvanica Marsh. Red Ash. Twigs, petio¬ 
les, rachis and lower surface of leaflets velvety pubescent; leaflets 
5- 9, green on both sides, ovate to oblong, margin varying from 
entire to serrate, apex acute or acuminate, 3X to 6 inches long, 
IX to 2 inches wide; calyx in the staminate flower obscurely 
toothed, that of the carpellate flower deeply divided; samara 1 to 
2 inches long, 1-8 to 3-16 inches wide, wing decurrent, linear to 
spatulate, about the same length as the body. Low, rich, moist 
soil. General. 
4. Fraxinus lanceolata Borck. Green Ash. Twigs and 
usually the leaves glabrous; leaflets 5-9, green on both sides, 
lanceolate to oblanceolate, entire to denticulate, 3 to l)/ 2 inches 
long, X to 2X inches wide, often pubescent on the veins beneath, 
apex acute to long tapering; samara 1% to 2X inches long, 
1-8 to X inches wide; wing somewhat decurrent, spatulate; 
body terete. Moist soil. General. 
5. Fraxinus biltmoreana Beadle. Biltmore Ash. Young 
twigs very pubescent; leaflets 7-9, pale beneath, more or less 
pubescent, especially along the veins beneath, ovate to ovate 
lanceolate, margin entire or sometimes obscurely serrate, rachis 
