266 Karl M. Wiegand and Arthur J. Eames 



2. S. minor Scop. (5\ officinalis of Cayuga Fl.) Garden Burnet. 



Dry gravelly banks ; rare, but becoming more frequent. June-July. 



Near Triphammer Falls (F. P. Metcalf) ; pasture n. w. of Chicago Springs, 

 abundant, 1920; Paine Creek glen, 1919 (A. J. E., K. M. W ., & L. F. Randolph) ; 

 West Shore R. R., e. of Clyde (£>.). 



Me. to w. N. Y. and Md. Adventive from Eurasia. 



Dudley states that S. officinalis " occurs well established along the West Shore 

 R. R. east of Clyde Sta." A Dudley specimen in the C. U. Herbarium from this 

 station, labeled S. officinalis, is S. minor Scop. 



21. Rosa (Tourn.) L. 



a. Styles cohering in a protruded column; leaflets usually 3; stems trailing or climbing. 



1. R. setigera 

 a. Styles distinct, not protruded ; leaflets 5-7 ; stems erect. 



b. Sepals ascending or connivent after flowering, persistent; pedicels and receptacles 

 naked; leaves dull. 

 c. Stems armed with hooked prickles ; sepals with a few glands in the tomentum, 

 or glandless; flowers double; leaves pubescent beneath. 2. R. cinnamomea 

 c. Stems unarmed, sometimes with abundant straight setose prickles ; sepals 

 glandular-hispid ; flowers single ; leaves pubescent or subglabrous beneath ; 

 plant lower. 3. R. blanda 



b. Sepals spreading or reflexed after flowering, deciduous ; pedicels and receptacles 

 usually more or less glandular-hispid; leaves glossy or dull, glabfous or 

 pubescent between the veins beneath. 

 c. Leaf rhachis strongly glandular-pubescent; leaves apple-scented (at least in no. 

 4) , elliptic-oval, subobtuse, pubescent between the veins beneath ; stipules 

 broad. 

 d. Leaflets 2 cm. long or less, glandular beneath ; flowers 3-4 cm. in diam., 



single; prickles stout, hooked. 4. R. Eglanteria 



d. Leaflets 3-6 cm. long, glandular only on midrib or glandless ; flowers 6-8 cm. 

 in diam., usually double ; prickles slender and straight, or wanting. 



5. R. gallica 

 c. Leaf rhachis glandless, or rarely with a few glands, glabrous or pubescent; 

 leaves not scented, elliptic, acute, usually glabrous between the veins beneath. 

 d. Terminal leaflets with (11) 14-20 fine teeth on each side above the middle; 

 stipules narrow; prickles stout, hooked; flowers 2-many; sepals little if 

 at all lobed ; plants of wet soil. 6. R. palustris 



d. Terminal leaflets with 9-13 coarser teeth on each side above the middle ; 

 flowers 1-3, together ; sepals strongly lobed or pinnate ; plants of dry 

 soil. 

 e. Prickles stout, strongly hooked ; canes long and arching ; stipules dilated. 



7. R. canina 



e. Prickles slender, straight ; canes low and rather straight ; stipules narrow. 



8. R. Carolina 



1. R. setigera Michx. Prairie Rose. 



Thickets in ravines and along fence rows, in clay or shaly soils ; occasional. July. 



South Hill, near old railroad embankment and near old reservoir (Morse Chain 

 Works) (D. !) ; Amphitheater, Six Mile Creek (D.) ; Cascadilla Glen, below bridge 

 and above Glen Pond (D.) ; e. of Perry City; field near Utt Point (£>.). 



W. Ont. to Wis., southw. to W. Va., Fla., and Tex. ; introduced eastw. Doubt- 

 fully native in the Cayuga Lake Basin. 



2. R. CINNAMOMEA L. ClNNAMON ROSE. 



Roadsides and fence rows, in heavy soils ; frequent. June. 



Near Summit Marsh ; n. w. of Enfield Falls ; South Hill ; E. State St., Ithaca ; 

 Dwyer Pond ; near Ringwood ; Etna ; Freeville ; and elsewhere. 



