S4l bulletin 179, U. S. DEPAETMENT OF AGEICULTUKE. 



axils of the lateral veins often rather densely hairy when very 

 young, serrations rounded or almost crenate, glandular; petioles 

 mostly 1.5 to 2.5 cm. long, pubescent on the upper surface, usually 

 with one or more glands toward the apex; stipules linear and glandu- 

 lar serrate. Flowers appearing from the first of April in southern 

 Missouri to the middle of May in northern localities, in umbels of 

 2 to 4 or rarely 5, about 12 to 15 mna. broad; pedicels glabrous, 

 slender, 9 to 12 or sometimes even 14 mm. long; calyx campanulate, 

 the tube about 3 mm. long, obscurely ribbed, and glabrous, the 

 lobes nearly or quite as long as the tube and oblong-ovate, glabrous 

 or sometimes obscurely pubescent', glandular on the margin^ mostly 

 obtuse at the apex, pubescent within mainly toward the base, and 

 usually refiexed in age; petals 6 to 8 mm. long, oval or oblong-orbicu- 

 lar, usually rather abruptly narrowed to a claw. Fruit ripening 

 late in July under cultivation in Texas, in September in Missouri, 

 and often in October in northern localities, globose or rarety slightly 

 ellipsoid in wild specimens, 18 to 25 mm. in diameter, or in the 

 ellipsoid forms 30 mm. long, varying in color from red to yeUow and 

 usually marked with whitish dots, bloom thin or wanting, flesh firm; 

 stone extremely variable (PI. X, figs. 1 to 12), ranging from nearly 

 globose,^ 11 by 9 by 7 mm., to oval or oblong, 17 by 11 by 7.5 mm., 

 pointed or narrowed and truncate at the base, pointed or sometimes 

 rounded at the apex, the ventral edge usually rather sharp, variously 

 grooved and sometimes ridged on either side, grooved along the 

 dorsal edge, the surface reticulated or rarely obscurely so. 



The tree grows singly or in groves and attains a maximmn height 

 in the region of its greatest perfection of about 25 or 30 feet; bark of 

 the trimk rather thin, exfohating in platelike scales, dark brown, the 

 inner layers reddish; young twigs at time of flowering rather dark 

 reddish brown or chestnut colored, sometimes with grayish blotches. 

 In the character of foliage, in the shape of fruit and stone, and in the 

 time of ripening Prunus Tiortulana bears some resemblance to P. 

 reverchonii, but it does not sucker as that species does in its natural 

 state and apparently never forms a thicket. 



Prunus Tiortulana ranges (fig. 2) from central Kentucky and north- 

 western Tennessee westward to northeastern Oklahoma and eastern 

 Kansas and northward through Missouri and western Illinois, reach- 

 ing its northernmost limit in Scott County, Iowa. It is most abun- 

 dant and apparently reaches its greatest size in Mssouri. 



Prunus Tiortulana was originally described from cultivated mate^ 

 rial, being based on the varieties "Golden Beauty, Cimiberland, Gar- 

 field, Sucker State, Honey Drop, probably Wild Goose, and others." 



1 The globose form of the stone is represented among cultivated varieties by Reed, and the oval or oblong 

 form by Golden Beauty, Wayland, and World Beater, with various intermediate shapes in other varieties 

 as well as in wild material. 



