1924| SARGENT, NOTES ON NORTH AMERICAN TREES, XII 47 



or slightly villose at the base, petals yellow or yellow slightly tinged with 

 red, their margins glandular and villose. 



A tree 29.15 metres in height, with a trunk 2.25 metres in girth at 

 one metre above the ground, covered with scaly bark, stout yellow branch- 

 lets and pale brown winter buds 2 cm. long. 



This tree was planted by the fence near the right hand side (facing the 

 house) of the entrance to Eleutherean Mills after 1820 by Eleuthere 

 Iren£e du Pont de Nemours and probably sprang from one of the seeds 

 collected by Antoine Bidermann during his journey on horseback from 

 New Orleans. This Buckeye, which is one of the most interesting of the 

 trees which have been planted in the United States, may well preserve 

 among tree lovers the name of a family which in at least four generations 

 has made the neighborhood of Wilmington, Delaware, one of the chief 

 centres of horticulture in the United States. 



X Aesculus DuPontii var. Hessei (A. neglecta georgiana X Pavia), n. 



hybr. 



Leaves 5-foliolate, their petioles stout, puberulous early in the season, 

 7-15 cm. in length; leaflets elliptic to slightly obovate, gradually narrowed 

 and long-pointed at apex, cuneate at base, usually doubly serrate with 

 slender slightly incurved teeth, glabrous, dark green above, lighter and 

 yellow-green below, 10-13 cm. long and 4-5 cm. wide, with a prominent 

 yellow midrib and from 20-25 pairs of slender primary veins often furnished 

 with small tufts of axillary hairs; petiolules puberulous, 3-9 mm. long. 

 Flowers appearing late in May, up to 3 cm. in length, red or yellow tinged 

 with red, on short villose pedicels in compact densely crowded villose 

 clusters 12 or 13 cm. long; calyx narrow-campanulate, slightly villose 

 toward the apex, usually red, the petals yellow more or less tinged with 

 red, villose and glandular on the margin. 



This shrub was presented to this Arboretum in 1909 by the Hesse Nur- 

 sery at Weener, Germany, with two other hybrid Buckeyes, under the 

 name of Aesculus (Pavia) nana rosea "de semis." The presence of both 

 hairs and glands on the margin of the petals indicates its hybrid origin. 

 The leaves cannot be distinguished from those of Aesculus Pavia, while 

 the inflorescence and the flowers only differ from those of A. neglecta 

 georgiana in the rather narrower calyx and in the glands on the margin of 



the petals. 



X Aesculus mutabilis Schelle in Beissner, Schelle & Zabel, Handb. 



Laubholz.-Ben. 323 (1903) = A. discolor mollis X neglecta georgiana. 

 Pavia mutabilis Spach in Ann. Sci. Nat. per. 2, n. 57 (1834). 

 Aesculus discolor X lutea Koehne, Deutsch. Dendr. 386 (1893). 

 Aesculus Pavia mutabilis Hort. Spaeth. 



This tree was well described by Spach, although the pubescence along 

 the sides of the under surface of the midrib and in a lesser degree of the 

 veins of the leaflets of the Arboretum plants presented by the Spaeth 

 Nursery at Berlin, Germany, are not tomentosae on the veins as Spach de- 



