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1. FRAXINUS Tourn. (Asu.) 
Light timber-trees, with petioled pinnate leaves of 3 to 15-toothed or 
entire leaflets, small polygamous or dicecious flowers in crowded panicles 
or racemes from the axils of last year’s leaves, small calyx (4-cleft, 
toothed, entire, or obsolete), petals 4 or altogether wanting, 2 stamens 
(sometimes 3 or 4), large linear or oblong anthers, single style with 
~-cleft stigma, and a 1 or 2-celled samara or key-fruit flattened, winged 
at the apex and 1 or 2-seeded. 
* Flowers 4-petalous, in loose panicles which mostly terminate short leaf-bearing branchlets, 
1. F. cuspidata Torr. Shrub 15 to 25 dm. high, glabrous: leaflets 5 to 7, lanceo- 
late or ovate-lanceolate and gradually acuminate into a cuspidate tip, or some of 
them ovate or oval and obtuse or even emarginate, acutely and sparsely few-toothed 
and entire, petiolulate; petiole slightly margined between leaflets: stigma sessile: 
fruit 12 mm. long, spatulate-oblong or obovate-oblong.-—** Small tree in the Chisos 
Mountains and some of the cations of the Great Bend.” (Havard.) 
2. F. Greggii Gray. Shrub 15 to 27 dm. high, glabrous: leaflets 3 to 7, from nar- 
rowly spatulate to oblong-obovate, obtuse, obtusely few-toothed or entire, firm-cori- 
aceous, veinless or nearly so, sessile: petiole wing-margined between the leaflets: 
fruit 12 to 16 mm. long, oblong-linear, the retuse apex tipped with a very short dis- 
tinct style-—On limestone, southwestern Texas. ‘Stout shrub, noticed near the 
mouth of the Pecos and at Maxon’s Spring.” (Havard.) 
** Flowers diecious and apetalous, in mostly denser panicles which are developed from sep- 
arate buds from upper axils of the preceding year, or on the leafless base of shoots 
of the season, 
+ Body of fruit terete or nearly so, marginless; the wing wholly terminal. 
3. F. pistacizfolia Torr. Small tree, 10 to 12m. high, either velvety-pubescent 
or nearly glabrous: leaflets 5 to 9, short-petiolulate (sometimes subsessile), from 
lanceolate to oval, entire or somewhat serrate; fruits small and crowded, spatulate, 
the terete body (6 to 10 mm. long) somewhat clavate, about equaling and sometimes 
exceeding the wing.—In the mountains of western Texas. “Frequently planted 
about El Paso and down the Rio Grande to San Elizario, on account of its quick 
growth.” (Harvard. ) 
4, F. Americana L., var. Texensis Gray. Low tree, 10 to 12 m. high, glabrous 
throughout: leaflets mostly 5, slender-petiolulate, from ovate to broadly oval, either 
rounded at apex or slightly acuminate, entire or sparsely serrate or denticulate: 
fruit small, 16 to 24mm. long, the body oblong and cylindraceous, completely terete, 
about half the length of the wing.—On rocky hills, from Dallas to Devil’s River 
(near the Rio Grande). 
+ + Body of fruit more slender, tapering gradually from summit to base, more or less 
margined upward by the decurrent wing. 
5, F. pubescens Lam. (Rep asu.) Branchlets and petioles velvety-pubescent: 
leaflets 7 to 9, ovate or oblong-lanceolate, taper-pointed, almost entire, pale or more 
or less pubescent beneath: fruit 3.5 to 5 cm. long, the edges gradually dilated into 
the linear or spatulate wing.—A tree of the eastern States, reported by Dr. Havard 
as having been seen ‘on the summit of the Gaudalupe Mountains, and nowhere 
else,” but possibly some form of the next species. 
6. F. viridis Michx. f. (GREEN AsH.) Glabrous throughout: leaflets 5 to 9, ovate 
or oblong-lanceolate, often wedge-shaped at the base and serrate above, bright green 
both sides: fruit much as in no. 5.—Along streams, throughout Texas. The most 
common ash west of the Colorado River is var. BERLANDIERIANA Gray, with 3 to 5 
leaflets having more cuneate base, and with fruit-wing rather wider and more decur- 
rent on the body. ‘‘ Large tree in the Chenate Mountains, smaller in the Limpia and 
18430—No. 2 8 
