172 JOT'RXAL OF THE ARNOLD ARBORETUM [vol. ii 



The unfolding leaves are pubescent above and, like the young branch- 

 lels, thickly covered below with snow-white tonientum, and llie mature 

 leaves are glabrous on the upper surface and covered below with short 

 soft pubescence, ovate to obovate or obovate-elliptic, abruptly pointed 

 and acuminate at apex, and cuneate or rounded at base. 



Tlie first s})ecimens of this variety came to the Arboretum from the 

 parks at Rochester, New York, in 1917. Plants had been obtained at 

 Rochester in 1915 as two-year-uld seedlings from the nurseries of Thomas 

 Median & Son, of Gcnnantown, Pennsylvania. Tliesc plants are grow- 



ing on a slope facing the northwest in Durand-Eastman Park fully ex- 

 posed to the cold winter gales l)l()wing across Lake Erie, The plants 

 have proved perfectly hardy there and, like //. monticola, have grown 

 up with a single trunk, A si)ecimeii of what appears to be this variety, 

 judging by the shape and pubescence of the mature leaves and the size 

 of the fruit, was collected on the bank of a stream west of Marion, Mc- 

 Dowell County, North Carolina, by T. G. Harl)ison, August IG, 1918; 

 and it is ap])arently this variety which grows in low sandy woods at Ileber 

 Springs, Carroll County, Arkansas, E. J. Palmer (No. G978), October 31, 

 1914. 



Halesia monticola var. vestita f. rosea, n. f. 



Differing from the type in the pink or i)ale rose-colored flowers. 

 Durand-Eastman Park, Rochester, New York, Dunbar and Horsev, 



1/ ' 



No. 3, June 2, 1920. Tliis is one of the Median seedlings. 



Halesia parviflora Michx. 



In the Silva of North America this plant was considered a shrub and 

 was not d<\scribed or figured. More is now known about it and it should 

 find a place among the trees of North America. The fruit was correctly 

 described by Michaux and Cha{>nuin, but Gray in his Synoptical Flora 

 described it as 2-winged. Gray's description of the fruit was made froiu 

 si)ecinicns which had been grown in the M(H^]ian Nurseries in German- 

 town, Pennsylvania. These arc 4-wingcd, but in pressing them for the 

 herbarium the alternate wings were brought so close together that the 

 fruit api)eared 2-winged. This mistake was copied by Small in his Flora 

 of the Southeastern States and has increased the difficulty of obtaining 

 infonnation in regard to the habit and distribution of Michaux's j>lant. 

 In the herbarium of the Arboretum there are photographs of Michaux's 

 two specimens collected near Matansas. After these the oldest s])eci- 

 men I have seen was collected by W. M. Canby in March, 18G9, at Ili- 

 bernia, Florida; in March, 1884, flowers were collected for John Doimell 

 Smith from a tree on the border of a swamp of the St. John^s River, half 

 a mile north of Magnolia, Florida, and in March two years later he col- 

 lected flowers from the same tree; in 1895 it was collected in fruit by 

 G. V. Nash (No. 237J5) at River Junction, Florida; and two years later 

 in the same region l)y collectors of the Biltmore Herbarium (No. 520b). 

 The other material which I have seen has been collected for the Arbore- 



