254 Karl M. Wiegand and Arthur J. Eames 



Flowers 5-8 in number, 25-30 mm. in diam. ; filaments free; anthers cream-colored; 

 fresh, unopened anthers large, 2.5-3 mm. long ; disk 5 mm. in diam. ; fruit globular, 

 yellowish green tinged with red. 



11. C. straminea Beadle. (C. apposita of Gray's Man., ed. 7.) 



In upland clay soil or in clay mixed with gravel or stone ; infrequent. May 28- 

 June 14; fr. Sept. 15-Oct. 



E. of South Hill Marsh ; n. bank of Coy Glen ; pasture, Dwyer Pond ; several un- 

 labeled specimens, probably from elsewhere. 



W. Vt. to s. Mich., southw. through Conn, and Del. to n. Ala. and s. Mo. (Eggles- 

 ton) ; rare or absent on the Coastal Plain. 



Anthers cream-colored; fruit ellipsoidal or subglobose, yellowish green or reddish. 

 The above-listed specimens are not clearly distinct from C. Boyntoni, the exact 

 identification being in many cases very difficult. They are here treated provisionally 

 as a separate species. 



12. C. pruinosa (Wendl.) K. Koch. (Doubtfully C. pruinosa of Eggleston.) 

 Upland pastures and thickets, mostly in heavy clay soil ; common. May 10-25, 



rarely to June 10; fr. Oct. 20 or later. 



Especially abundant on Cayuga Heights northw. to Esty or beyond, but frequent 

 also on the n. e. slope of South Hill, and found sparingly elsewhere: top of North 

 Pinnacle, Caroline; s. of Newfield station; hillside n. of Buttermilk Glen; South 

 Hill, near the " Incline " and s. of Coddington Road ; Cayuga Heights and northw. ; 

 Shurger Glen; n. of Big Gully. 



W. N. E. to Mich., southw. to N. C. and Mo. (Eggleston) ; rare or absent on the 

 Coastal Plain. 



Flowers 18-20 (25) mm. in diam.; fresh, unopened anthers 1.8-2 mm. long. 

 C. pruinosa apparently hybridizes with several other species. A number of plants at 

 Dwyer Pond and one on Cayuga Heights, answering to C. Macauleyac Sarg., are 

 to be interpreted as C. pruinosa or C. Boyntoni x C. punctata or C. Braincrdi. Some 

 plants at Dwyer Pond with broad, shallowly many-lobed leaves, are probably C. pruinosa 

 or C. beata x C. coccinea (?C. rugosa Ashe). C. filipes is variable and gives the 

 impression of a hybrid of C. pruinosa and C. macrosperma. Other forms occur 

 occasionally, but these can generally be interpreted as crosses between C. pruinosa 

 and other species in the vicinity. C. pruinosa and C. sp. (no. 13) are the only species 

 with extremely glaucous fruit. The fruit of C. beata and that of C. Crus-galli are 

 usually somewhat glaucous. This use of the name C. pruinosa is supported by 

 specimens so named, from European gardens. 



13. C. sp. 



Clay soil ; local. May 10-25 ; f r. Oct. 



South Hill, near the Cayuga St. extension and s. of Coddington Road; Six Mile 

 Creek, at crossroad above upper reservoir ; Dwyer Pond. 



These plants are distinguished from all other relatives of C. pruinosa in the Cayuga 

 flora by the combined characters of large flowers (20-25 mm. in diam.), pale pink 

 anthers, drooping long-pedicelled red fruit, and bluntly toothed, rounded leaves. 

 Efforts to detect the form among the mass of published names in Crataegus have so 

 far been unsuccessful, and it has not been seen from elsewhere in herbaria ; yet no 

 combination of local species can account for its characters as a hybrid. 



14. C. beata Sarg. (Including C. leiophylla Sarg.) 



Upland pastures and thickets, in soils somewhat lighter than the preceding but 

 still containing some clay; occasional. May 10-25, rarely June 10; fr. Oct. 



Summit Marsh; Michigan Hollow; near Trumbull Corners; Dwyer Pond (abun- 

 dant) ; Cayuga Heights (frequent); Union Springs; (planted near the Agricultural 

 College). 



S. Ont. to w. Penn. (Eggleston). 



