﻿37S BOTANICAL GAZETTE [june: 



parenchyma ; petioles stout, grooved, winged below the middle 

 by the decurrent base of the leaf-blades, occasionally sparingly 

 glandular, 6-14"'"' in length ; stipules linear, dark red, minute, 

 caducous; on vigorous shoots leaves usually elliptical, short- 

 pointed, very coarsely serrate, usually laterally lobed, 6-7"^™ ^^"g" 

 4_5cm ^yide^ vvith stout midribs and prominent slender primary 

 veins, their stipules foliaceous, lunate, coarsely glandular-ser- 

 rate, stalked, sometimes LS*""" in length. Flowers 1.2-1 5^"" in 

 diameter on long slender pedicels, in broad thin-branched many- 



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flowered compound corymbs ; bracts and bractlets linear, minute, 

 caducous; calyx-tube narrowly obconic, the lobes abruptly nar- • 



rowed from the base, linear, acuminate, tipped with small dark 

 red glands, entire or rarely slightly and irregularly serrate, 

 reflexed after anthesis ; stamens 5-12, usually 10; anthers small, 

 pale yellow; styles 1 or 2. Fruit on slender pedicels, in droop- 

 ing many-fruited clusters, oblong, dull dark crimson marked 

 by large pale dots, about i^"^ long, 8-10"""^ wide; calyx small, 

 sessile, with a narrow shallow cavity and reflexed and appressed 

 lobes; flesh thin, yellow, dry and mealy; nutlet i, gradually 

 narrowed from the middle to the obtuse ends, grooved and 

 irregularly ridged on the dorsal face; or 2 and then broad, 

 rounded at the ends, prominently ridged on the back with a 

 high wide rounded ridge, about 8"^"^ in length. 



A shrub 3-4"* tall with numerous erect stems and branches covered with 

 smooth light gray bark, and slender slightly zigzag branchlets, light orange- 

 green and marked by small pale lenticels when they first appear, dark purple 

 and lustrous at the end of their first season, dark grayish-brown the following 



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year, and armed with many slender straight or slightly curved dark purple 

 shining spines 4.5-8^"" long. Flowers during the last week of May or early 

 in June. Fruit ripens the middle of September. 



Glen Ellyn, Du Page county, B. F. Gault, June igoi ; rich clay loam in 

 ravines near water or in depressions near the top of a clay hill, ** Forest of 

 Arden," Joliet, E. J. Hill, May and September 1902, H. S. Steels, May 1902. 



At Joliet Mr. H. N. Higginbotham has planned and planted a garden of 

 three hundred acres. It is called the Forest of Arden, and here are to be 

 brought together the trees and shrubs and other plants of the United States 

 which can support the climate of Illinois. I am glad to adopt Mr. Hills 

 suggestion and associate with this thorn the name of the garden where it 

 grows spontaneously. 



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