The Trees of Texas 151 



FRAXINUS (Tourn.) L. Ash. 



Tnvs with opposite, odd pinnate leaves, and furrowed 

 bark: tlowcrs in axillary clusters, and staminate and pistil- 

 late on different trees: fruit a samara. 



1. Petioles and leaf rachis winged 1. F. Greggii. 



2. Petioles and leaf rachis not winged. 



(1) Lateral leaflets sessile or short stalked 2. F. velutina. 



(2) Lateral leaflets distinctly stalked. 



a. Shoots and main axis of leaf hairy or 



velvety 3. F. Pennsylvania. 



b. Shoots and main axis of leaf smooth. 



(a) Wing of the fruit extending down 

 on the body almost to the base. 



x. Body of the fruit flattened. 



m. Leaflets 5-7 4. F. Caroliniana. 



n. Leaflets 3-7 5. F. cuspidate. 



y. Body of the fruit round or 



nearly so. 



m. Leaflets 3-5 6. F. Berlandieri. 



n. Leaflets 5-7 7. F. Toumeyi. 



(b) Wing of the fruit terminal or 

 nearly so. 



x. Leaflets mostly 5 sometimes 7.. 8. F. Texensis. 

 y. Leaflets 5-9 mostly 7 9. F. Americana. 



1. Fraxinus Greggi Gray. Gregg's Ash. A small tree 

 20 -25 high with thin, gray, scaly bark and smooth twigs. 

 Leaves with petiole and rachis winged, leaflets 3-7, sessile. 

 Fruit in small clusters in the axils of leaves. On dry lime- 

 stone cliffs western Texas and northern Mexico. 



2. Fraxinus velutina Torrey. Velvety Ash. A round 

 topped tree 30-40 high and 6'-8' in diameter with stout 

 spreading branches, rough, reddish green bark, and velvety- 

 twins. Leaves unequally pinnate, velvety on low r er surface; 

 leaflets 3-9, lanceolate to ovate, sessile, yellowish green, leath- 

 ery. Flowers dioecious, the staminate and pistillate on dif- 

 ferent trees. Seed of the samara round, the wing extending 

 down only about one-fourth of the length of the seed. West- 

 ern Texas, New Mexico, Arizona, Nevada and southern Cali- 

 fornia. 



3. Fraxinus Pennsylvanica Marshall. Red Ash. A me- 

 dium sized tree 50-6Q high with dense crown, brown fis- 



