
ADJACENT TO HORTICULTURAL HALL. 83 
_ Acer Platanus, Zimnmeus. SYCAMORE MAPLE. Large tree from Europe 
and Western Asia. Leaves large, lobed, toothed, somewhat hairy on the 
under surface; foot-stalk reddish; stamens 5 to 8; wings of mature fruit di- 
verging widely. Hardy and ornamental. Has produced varieties with purple, 
golden, and silvery foliage. 
Acer rubrum, Zinneus. Rep Maple. A good-sized native tree, which 
produces before the leaves appear a profusion of scarlet flowers (the fertile 
ones drooping); 3- to 5-lobed leaves with acute sinuses, turning bright scarlet 
in autumn. 
Acer saccharinum, Wangenheim. Rock or SUGAR-MAPLE. A noble 
native tree, with flowers appearing at the same time as the heart-shaped 3- to 
5-lobed leaves, which are slightly hairy on the veins beneath, notches in the 
leaves rounded; calyx-lobes hairy; petals none; wings of the large fruit only 
slightly diverging. A valuable wood in the arts, furnishing the Birb’s-EvYE 
and CuRLED Maple. The tree is better known still as the source of maple 
sugarand syrup. The variety nigrum, Gray; B1.AcK SUGAR. MAPLE, was once 
regarded as a distinct species (Acer nigrum, Michaux), and is distinguished 
by having broader lobes and narrower notches to the greener leaves. 
Acer spicatum, Zamdert. MOUNTAIN MAPLE. Native shrub, with 
greenish flowers appearing before the 3- to 5-lobed, coarsely-toothed leaves, 
which are downy on the under surface; stamens 5 to 8; flower-clusters erect, 
and fruit with small wings. 
Acer Tataricum, Zinneus. From Tartary. Leaves toothed, but not 
lobed ; flowers in close erect compound clusters; wings of the fruit nearly 
parallel. 
fEsculus. Horse-CHestNutT, BucKEye. Trees or shrubs with 5 to g 
leaflets from the summit of a leaf-stalk; young fruit 3-celled, each cell with 2 
young seeds; in mature fruit a leathery rind encloses one or more large chest- 
nut-like seeds; conspicuous flowers of 4 to 5 long-clawed petals; stamens 
usually 7, often unequal. 
Esculus flava, Aiton. SweEET BUCKEYE. Native tree, with the husk of 
the fruit not prickly; flowers yellow; petals 4, of which the 2 upper are on 
longer claws, but with smaller blades; stamens not protruding from the flowers ; 
leaflets 5 to 7, smooth or nearly so. Known in some garden lists as Pavia 
flava. * var. purpurascens, Gray. PURPLE-FLOWERED BUCKEYE. Flower 
of a dingy purple. It is the 4sculus discolor, Pursh. 
Esculus glabra, Willdenow. FrtTip BUCKEYE, OHIO BUCKEYE (erro- 
neously named in some lists Pavia rubicunda or Pavia Ohioensis.) A favorite 
native tree; flower of 4 rather small, upright, pale-yellow petals, shorter than 
the slightly-curved stamens; fruit prickly when young; leaflets 5. 
#Esculus Hippocastanum, Zinnzus. COMMON HoRSE-CHESTNUT. A 
well-known tree, the fruit of which is prickly when young; conspicuous in 
spring for its large dense pyramidal clusters of yellow- and reddish-spotted 
white flowers; petals 5; stamens turned to one side; leaflets 7. Originally 
from Asia. Cultivation has produced varieties. 
ZEsculus parviflora, Walter. SMALL-FLoweRED or Dwarr Horsr- 
Cuestnut. Hardy shrub from the Southern States, with white flowers in 


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