128 BOTANICAL GAZETTE. 



leaves, at least at first, appressed hairy on the upper and glabrous 

 on the under side; Mowers in corymbs, styles usually 5; spines 

 mostly short and stout, often recurved. The three species are: 



C. Douglasii, Lindl., the westernmost species, from British 

 Columbia to California, with broader, thinner, doubly serrate leaves, 

 the upper ones on the shoots lobed, and with broad, incised-toothed 

 stipules; calyx lobes usually entire; fruit smaller, bl;ick-purple,ripe(in 

 Northern California) in August; nutlets 2 to 3 lines long, strong] v 

 ridged on the back; spines 4- to 1 inch long. 



C. rivularis, Nutt., in the Rocky and Wasatch Mountains of 

 Colorado and Utah, with narrower, more rigid, lanceolate-ovate, 

 singly serrate leaves, only the upper ones of the shoots broader, 

 doubly serrate or rarety slightly incised, with narrow glandular- 

 incised stipules; calyx lobes usually glandular; fruit larger; nutlets 

 3 lines long or over, usually strongly ridged on the back; spines 

 few, i to 1 inch long. . 



C. brachyacantha, Sargent & Engelmann. A tree 20 to 30 feet 

 high, or sometimes larger, with smoothish or, in very old trunks, 

 rough bark: spines on the whitish branches numerous, stout, short 

 (3 to 6 or 8 lines long), mostly curved, sometimes terminating the 

 branches; leaves lanceolate-oblong to ovate or rhombic, 1^ to 2 or 

 2i inches long, attenuate into a short petiole, thick and almost 

 coriaceous, appressed-serrate, shining, with ribs almost obliterated, 

 those of the terminal shoots larger, broader, slightly lobed, with 

 large foliaceous dentate or sub-entire stipules *; flowers small for 

 , the genus, with broadly lanceolate entire calyx lobes and 5 styles; 

 fruit depressed-globose, about i inch through, black-blue with 

 bloom; nutlets (3 lines long) with 2 slight grooves on the nearly 

 smooth back. 



In the Red River region, first collected by Drummond (Louisi- 

 ana Coll. 1832, no. 105 in part); Webster Parish, La., ('. Moltr, 

 1880, both without flower or fruit; Concord, Texas, 0. S. Sargent, 

 March 29, 1881, with flower buds; west of Longview, Texas, G. W. 

 Letterman, August 19, 1882, with mature fruit, u they looked from 

 a distance like plum trees with small blue fruit, the ground under 

 them was covered with the fallen haws. 11 The species is easily re- 

 cognized by its coriaceous, shining almost ribless leaves; in C. 

 Douglasii they are broader, membranaceous and dull, in C. rivularis 

 intermediate between the two. 



I may add here that Prof. Sargent rediscovered the obscure 

 C. berberifolia, Torr. & Gray, which was founded on a single flower- 

 less specimen, in the very region,near Opelousas, Wester.. Louisiana, 



*The stipules of Crataegus are not often noticed and I am not sure that 

 they possess much constancy or diagnostic value. Generally they aie found 

 only or at lea,st are most persistent on the shoots; they are always ohlique and 



petioled or stipulate, broadly triangular to linear, mostly incised-dentate or 



sometimes glandular-dentate, rarely entire. 



