ROSACEAE 105 



Plants erect. 2. R. nigrohaccus. 

 Plants trailing. 



Leaflets not cordate. 3. R. procumbens. 



Leaflets cordate. 4. R. invisus. 



1. R. occidentalis L. Wild Easpberky. 1°-4° high, glaucous, 

 prickly, especially on the peduncles: leaflets three, very white beneath : 

 fruit purplish-black. — Common in woods throughout. 



2. R. nigrobaccus Bailey. Wild Blackbekey. 1°-8° high, prickly, 

 very pubescent : leaflets 3-5, ovate to oblong-ovate, coarsely serrate : 

 flower racemes leafy-bracted at base : fruit short-oblong. — Very common 

 in thickets. The usual form is not strongly glandular-pubescent, but near 

 Dodson occurs a noticeably glandular-pubescent form ; near Sibley a 

 glandular-pubescent form with dry oblong fruit 5'' ''-6^^ long ; and near 

 Lee's Summit a form with very villous sepals. 



3. R. procumbens Muhl. Dewberey. Stems trailing, armed with 

 scattered prickles : leaflets oblong-ovate, 7^^-30^^ long, 6^^-20'^ wide, 

 glabrate or pubescent, narrowed to or rounded at the base: sepals obtuse 

 to shortly leafy- tipped. — Abundant in dry woods. 



4. R. invisus Bailey. Stems trailing, armed with scattered prickles : 

 leaflets ovate to ovate-orbicular, thickish, 12^^-36^^ long, 9^^-30^' wide, 

 quite pubescent, rounded or usually cordate at base : sepals usually 

 strongly tipped. — Low prairies, especially along Little Blue River. 



4. FRAGARIA L. 



Acaulescent herbs with 3-foliolate leaves, and corymbose flowers. 

 Calyx 5-parted and with 5 bracts in the sinuses. Petals 5, white. Achenes 

 numerous, in fruit scattered over the surface of the pulpy receptacle. 



1. F. Virginiana L. Wild Strawberry. Villous with spreading 

 hairs : leaflets obovate, sharply serrate : fruit ovoid. — Common in dry 

 soil. April. 



5. DUCHESNEA J. E. Smith. 



Differs from Fragaria in having leafy stems, yellow flowers and a non- 

 pulpy fruit. 



1. D. Indica (Andr. ) Focke. Indian Strawberry. Stems trailing, 

 leafy, silky-pubescent : leaflets obovate, crenate-dentate : flowers small. — 

 Escaped from cultivation in Independence. May-June. 



6. POTBNTILLA L. CiNQUEFOiL. 

 Plants with leafy stems and yellowish flowers, resembling Fragaria, 

 but the receptacle dry and not inflated in fruit. 



Leaflets pinnately 3-11-foliolate. 



Plants erect. 1. P. arguta. 



Plants procumbent. 5. P. j)aradoxn. 



Leaflets digitately 3-5-foliolate. 

 Plants erect. 



Lower leaves 3-divided. 2. P. Monspeliends. 



Lower leaves 5-divided. 3. P. ])entandra. 



