1921] SARGENT. NOTES ON NORTH AMERICAN TREES. XIII 171 



Differing from the type in the somewhat thicker dark chestnut brown 

 lustrous and only slightly rugose seeds, smaller stamlnate flowers not 

 more than 6 or 7 mm. in length, and smoother bark. 



A tree or arborescent shrub up to 8 m. high, with a trunk 20-25 cm. 

 in diameter, covered with light gray slightly fissured bark. 



Florida. Dade County, near the Humbugus Prairie, west of Little River, 

 A. Rehdcr (No. 729), April 23, 1920; Arch Creek, A, Rehder (No. 733), April 24, 

 1920; on Long Key in the Everglades, E. A. Bcsseij (No. 60), May, 190S. 



The seeds which have been chiefly used to distinguish the Diospyros 

 of southern Florida, although rather smaller, in shape, color, lustre and in 

 their slight reticulation, resemble the seeds of the var. platycarpa to 

 which, by its seeds at least, it is closely related, although the fruit in size 

 and shape and the glabrous branchlets belong with the typical Diospyros 

 of the eastern states. 



Halesia monticola, n. sp. — Halesia Carolina var. monticola Rehder 

 in Mitt. Deutsche Dendr. Ges. xxii. 2G0 (1913), 



From Halesia Carolina the Mountain Halesia differs in its larger flowers 

 and fruit, in habit and bark. Halesia Carolina is an arborescent shrub 

 with spreading stems, or a small tree rarely more than 8 or 9 m. high, 

 with a short trunk rarely more than 30 cm. in diameter covered with 

 close bark separating on the surface into small closely appressed scales; 

 it is an inhabitant of the foothills of the southern mountains and grows 

 down nearly to sea-level. Halesia monticola does not grow below alti- 

 tudes of about 1000 m. on the high Carolina mountains where it is an 

 important timber tree 25-30 m. high, with a trunk often 1 m, in diameter 

 and free of branches for 18 or 20 m. and covered with bark which sep- 

 arates freely into large loose plate-like scales. It reproduces itself from 

 seed, and seedling plants grow habitually with a single stem; and although 

 the leaves of the lowland and the mountain trees show little difference 

 in shape, size and pubescence, it seems desirable to consider this a dis- 

 tinct species. The fact that the two trees were considered identical until 

 a few years ago accounts for the fact that the mountain tree was not culti- 

 vated until the end of the last century, although the seeds of Halesia 

 Carolina were sent to England as early as 1756. 



The credit of the introduction of Halesia monticola belongs to Mr. 

 Harlan P. Kelsey, of Salem, Massachusetts, by whom it was sent about 

 twenty-four years ago to the parks of Rochester, New York, whence it 

 came to the Arboretum in 1907. In cultivation H. monticola proves to 

 be a valuable ornamental tree; it is perfectly hardy, grows rapidly, and 

 begins to flower when less than 4 m. tall, and is better suited for northern 

 gardens than the other species of the genus. 



Halesia monticola var. vestita, n. var. 



Differing from the type in the pubescent under surface of the leaves 

 sometimes rounded at base, in the somewhat wider mouth of the corolla 

 and smaller fruit 2.5-4 cm. long. 



