252 Karl M. Wiegand and Arthur J. Eames 



5. C. Brainerdi Sarg. 



Pastures and roadsides, in gravelly, more or less calcareous, soils, very rarely in 

 clay; frequent. May 15-25, rarely June 5; fr. Sept. 10-Oct. 



Inlet Valley (Strattons to West Danby, many plants) ; Dwyer Pond (many 

 plants); Cayuga Heights; Cascadilla Creek, toward Turkey Hill; Brookton to 

 Slaterville ; Varna station ; Freeville to Dryden ; McLean Bogs ; near Chicago sta- 

 tion; Esty; Mecklenburg to Cayuga Lake; Sheldrake to Hayt Corners and Romulus 

 (many plants) ; Sawyer Creek to Cayuga. 



N. E. to s. Wis., southw. to Pa. and Iowa (Eggleston) ; rare or absent on the 

 Coastal Plain. 



Flowers subcorymbose, numerous, all long-pedicelled ; sepals only slightly serrate; 

 stamens 10 or 20 ; filaments scarcely connate ; anthers pink or white, of medium 

 size ; disk concave, 0.3-3.5 mm. in diam. ; fruit ellipsoidal ; hypanthium somewhat 

 prominent; nutlets usually 3, often pitted on the inner faces. The forms referred 

 with some hesitation to this species are variable, with either 20 or 7-10 stamens 

 and pink or white anthers. The corymbs are usually villous, not glabrous as stated 

 by Eggleston, and the nutlets are usually not clearly pitted and are irregular ; the 

 foliage, however, is very uniform in all cases. The structural characters of the 

 local plants strongly suggest a hybrid origin, with possibly C. macrosperma and 

 C. succulenta, or C. macrosperma and C. punctata, as parents. Because of the 

 abundance of this form, it has seemed best to treat it as a species until its hybrid 

 origin can be more definitely determined. 



6. C. macracantha Lodd. (C. macracantha of Gray's Man., ed. 7. C. succulenta, in 



part, of Britton & Brown's 111. Fl., ed. 2. C. coccinea, var. macracantha Dudley, 

 of Cayuga Fl.) Long-spurred Thorn. 



Pastures, thickets, and stream banks, in gravelly or stony, more or less calcareous, 

 soils ; scarce. May 25-June 8 ; f r. Sept. 20-Oct. 



Headwaters of Lick Brook to Buttermilk Creek, one plant (Wm. Moore) ; South 

 Hill, beyond the "Incline" (Morse Chain Works) and beyond survey station 420 

 (D.) ; campus brook at Barnes Hall (£>.!); Cayuta Lake; Crowbar Point; Shel- 

 drake to Hayt Corners (Wm. Moore) ; both shores of Cayuga Lake from Rocky 

 Point northw. (D.) ; Union Springs, near shore and inland; near Scipioville. Not 

 reported from the hills s. and e. of Ithaca or from the McLean region. 



N. S. to Minn., southw. to N. C. and Nebr., and from Colo, northw. in the mts. 

 (Eggleston) ; rare or absent on the Coastal Plain. 



Leaves thick, little lobed, obovate-orbicular, subobtuse, parallel-veined ; flowers 

 rather numerous, 18-20 mm. in diam., some nearly sessile ; sepals conspicuous, sub- 

 pectinate ; disk nearly flat, 3.5 mm. in diam. ; filaments separate ; anthers cream 

 color or white, of medium size ; fruit cherry red ; nutlets usually 2, pitted on inner 

 face but very indistinctly so in the local material ; thorns often 10 cm. long, usually 

 curved. 



7. C. succulenta Schrad. (C. succulenta and C. neofluvialis, each in part, of Eggle- 



ston in Gray's Man., ed. 7 (as vars.), and in Britton & Brown's 111. Fl., ed. 2.) 

 Pastures and thickets, in calcareous clays and lighter soils ; frequent or locally 



abundant. May 25-June 5 ; f r. Oct. 



Inlet Valley, Newfield ; South Hill, near the " Incline " ; Dwyer Pond ; Ellis 



Hollow, w. of swamp ; Cayuga Heights and toward Esty, frequent ; Shurger Glen ; 



Salmon Creek valley, in Lansing and Genoa; near Pleasant Valley, Groton; Levanna 



to Sawyer Creek, frequent (Wm. Moore) ; Farley Point. Not reported from the 



w. side of Cayuga Lake, from the hills s. and s. e. of Ithaca, or from the McLean 



region. 

 W. Vt. to. e. Wis., southw. to N. C. and Iowa (Eggleston) ; rare or absent on the 



Coastal Plain. 



