169 



and from seeds sent by him to the Arnold Arboretum plants were raised and 

 distributed. It has not yet flowered in England. For many years AL. turbinata 

 was grown on the Continent as AL. chinensis, and even figured under that 

 name, but the true plant is absolutely different. 



There has recently been described (Plantiz Wilsoniance, i., p. 498) as a new 

 species, the horse-chestnut introduced by Wilson in 1908 from Szechuen and 

 Hupeh, China. It is named AL. WILSONII, Rehder. This tree was at first 

 considered to be JE. chinensis, to which indeed it is very closely allied. It 

 may be distinguished from AL. chinensis as follows : Leaflets longer stalked, 

 not generally so tapered at the base, but rounded or even slightly heart-shaped 

 there; more downy at first beneath (but in both species becoming glabrous); 

 veins more numerous (up to twenty-two pairs), forming at their junction with 

 the midrib a more obtuse angle than in /E. chinensis. Flower-stalks more 

 downy. Fruit ovoid to pear-shaped, with a mucro at the apex, and, according 

 to Rehder, with the husk only half as thick as in JE. chinensis. Seed larger, 

 with the scar (hilum) covering about one-third (one-half in AL. chinensis). 

 AL. Wilsonii has a more southern distribution. Racemes up to 16 ins. long. 



These two chestnuts, with AL. indica, belong to a distinct section of the 

 genus (CALOTHYRSUS, Koch\ but AL. indica has broader panicles with less 

 crowded, more erect branches, larger flowers, and broader petals. 



JE. GLABRA, Willdenow. OHIO BUCKEYE. 



A tree up to 70 ft. high in America, with a trunk over 6 ft. in girth, but 

 usually about half as high ; bark of the trunk rough, and much fissured. 

 Leaves usually composed of five leaflets, which are 3 to 6 ins. long, about 

 one-third as wide ; obovate or oval, with a long, tapering point, sharply 

 toothed ; downy when young, but becoming smooth with age, except along the 

 midrib and chief veins. Flowers about i in. long, greenish yellow, in erect 

 panicles 4 to 7 ins. long, 2 to 3 ins. wide ; petals four ; stamens | in. longer than 

 the petals. Fruit i to 2 ins. long, broadly ovate, distinguished from other 

 American buckeyes by prickles resembling those of common horse-chestnut, 

 but much less prominent. 



Native of the S.E. and Central United States. This tree is of handsome 

 shape and foliage, but is the least attractive of the genus in its flowers. Often 

 confused with AL. octandra,'it is readily distinguished by its rougher bark, the 

 less downy leaves, the longer outstanding stamens, and the prickly surfaced 

 fruit. It flowers at the end of May and the beginning of June. There are 

 several healthy, small trees at Kew, but none of great size. The largest tree 

 recorded in this country grew until recently at Devonhurst, Chiswick; it was 

 60 ft. high, and 6 ft. in girth of trunk. 



'Var. BUCKLEYI, Sargent (JR. ARGUTA, Buckley), is a form with six or seven 

 leaflets, also distinct in their longer, drawn-out points and their double-toothed 

 margins. It does not reach so far east as the typical AL. glabra, and is found 

 in Kansas, Texas, etc. 



fiL HlPPOCASTANUM, Linnaus. HORSE-CHESTNUT. 



A tree reaching over 100 ft. in height, with a rounded, spreading head as 

 much in diameter, and a trunk 15 ft. or more in girth; winter buds very 

 resinous. Leayes composed of five to seven leaflets, which are obovate, from 

 5 to 12 ins. long, 2 to 5 ins. wide, irregularly toothed, the terminal one the 

 largest ; the upper surface is smooth, the lower one has patches of brown hairs 

 in the axils of the veins, and short hairs thinly scattered over it. Panicles up 

 to 12 ins. high, and 4 ins. through. Flowers with four or five petals, white with 

 a patch of colour at the base, which is at first yellow, then red ; stamens rather 



