907] BRIEFER ARTICLES 



65 



coarsely serrate occasionally nearly to the base, and lobed only toward the 

 apex. At the flowering time they are lustrous, covered above with soft 

 white hairs most abundant on the midribs and veins, and pale and more 

 or less villose in the axils of the veins below, later becoming subcoriaceous, 

 dark green, and very lustrous. The flowers vary from 1.2 to 1.4^"^ in 

 diameter and are produced on long slender glabrous pedicels, in usually 

 15- or i6-flowered compound corymbs, with linear caducous bracts and 

 bractlets. The broad calyx-tube is quite glabrous and much longer than 

 the wide, entire, or occasionally minutely dentate lobes, acute and bright 

 red at the apex and sparingly villose on the inner surface. The anthers are 

 small and very pale rose color, and the styles are normally five. The fruit 

 is black, short-oblong, crowned by the persistent calyx, with yellow, succu- 

 lent, rather sweetish flesh; the nutlets, which in many of Mr. Suksdorp's 

 specimens are abortive, wrinkled, and much reduced in size, are normally 

 five, obtuse at the ends, slightly ridged on the back, and irregularly pene- 

 trated on the inner faces by shallow longitudinal cavities. The branchlets 

 are red or orange-red and very lustrous, and the spines, which are 

 stout and nearly straight, and generally not more than from i to 1.5^"^ 

 in length, occasionally on vigorous branches become nearly 4^"^ long. 

 C. Douglasii is the common species of the northwestern states, extending 

 north into British Columbia, south into northern California, and eastward 

 at least as far as Wyoming.^ 



Of the plants collected by Mr. Suksdorf, those with twenty stamens 

 and small fruit, placed by him in his group Z), vary most from what I con- 

 sider the type of C. Douglasii, and although it does not seem possible to 

 distinguish these specifically^ they certainly constitute a well-marked variety, 

 for which I suggest the name: 



Crataegus Douglasii var. Suksdorfii, nov. var, — A shrub sometimes 



^ 8"^ high, with numerous stout, erect, and spreading stems. — Banks of the 



^ Columbia River and borders of bottom lands, West Klickitat County, 



Washington, W\ N, Sitksdor}, 1905-1906 (nos, 4034, 49^9? 5^26, 5031, 

 5040). 



Another plant in this group should also be mentioned. This is a ten- 



stamened plant with distinctly chestnut-colored fruits, and may be called: 



Crataegus Douglasii forma badia, nov. forma. — It grows on Union 



Flat^ six miles south of Pullman, Washington, with the black-fruited C. 



"■ Of the black-fruited Crataegus which grows at a few stations on the northe 

 peninsula of Michigan and on some of the islands of Lake Superior, and which has been 

 referred to C. Douglasii, flowers have not been collected and its true specific position 

 cannot be determined at present. 



