606 ROSACEAE 
Corolla yellow : receptacle not pulpy. 1. DUCHESNEA. 
Corolla white or pinkish : receptacle pu ulpy. 8. FRAGARIA 
Shrubs: achenes pubescent, borne on an inconspicuous 
d E 
w shrub: leaf-blade 3-foliolate : style filiform : co- 
"Folia white. 9. SIBBALDIOPSIS. 
Tall p eae pinnate: style clavate: co- 
rolla y wW. 10. DASIPHORA. 
Style nearly E dd 11. DRYMOCALLIS. 
VI. ALCHEMILLE 
Small annual herbs: leaf-blades digitately 3- Bd and again 
toothed or lobed. 12. APHANES. 
VII. SANGUISORBEA 
Hypanthium not prickly: petals wanting: acre moe com- 
pact. 
Stamens 2-4, not declined: pistil 1. 13. SANGUISORBA. 
Stamens, in staminate flowers, numerous, declined: pistils 2. 14. POTERIUXM. 
E with hooked spines: petals present : inflorescence 
5. AGRIMONIA, 
VIII. COLURIEAE 
Perennial herbs with ur leaves basal; blades lobed or 
compound: hypanthium ostly obconic: "corolla yellow : 
achenes in the hypanthiu a 16. WALDSTEINIA. 
IX. Dry 
Style conspieuously bent and geniculate es p upper por- 
tion usually hairy, readily deciduous 
Head of achenes sessile: sepals accompan nied by bractlets. 17. GEUM. 
pn of achenes stalked: sepals not accompanied by bract- 
18. STYLIPUS. 
Style nel ene conspicuously bent nor distinctly geniculate, the 
upper portion glabrous, persistent. 19. SIEVERSIA. 
X. RUBEAE 
Spreading stoloniferous herb, with reniform leaf-blades: flow- 
pa of 2 kinds, the essentially staminate flowers nouus 
fructiferous flowers apetalous, and with few stamens 
Aups D dry. 20. DALIBARDA. 
Erect or diffus e shrubs, with lobed or compound leaf-blades: 
flowers all petaliferous: drupelets juicy and pul 
Styles clavate: stigmas slightly e receptacie flat : 
Jeaf-blades U veined and lobed: plants unarmed. 21. RUBACER. 
B pA glabro stigmas capitate: receptacle con- 
ispherie, or ‘ni ipple-shaped: leaf-blades mostly 
Mo plants usually prickly. 22. RUBUS. 
XI. KERRIEAE 
Corolla wanting: calyx corolloid; sepals toothed. 23. NEVIUSIA. 
Corolla present: calyx herbaceous ; sepals entire. 24. KERRIA. 
XII. ROSEAE 
Shrubs with usually bristly or prickly stems: leaf-blades 3- 
foliolate or pinnate. 25. ROSA. 
1. OPULASTER Medic. acon Leaf-blades cin lobed. Flow- 
PA Ae Corola white. Sta numerous, without staminodia. 
s 1-5, short- Hi aoe styles Süform. Stigmas depressed-capitate. Fol- 
ticles a [Physocarpus Maxim.]—NINEBARKS.—About 12 species, North 
merican ip à ue 
Follieles glabrous at maturity, ovoid, usually 5 together. 
Seed with a long lateral caruncle: follicles usually twice as long as the sepals 
leaf-blades of the sterile shoots usually longer than wide. 1. O. opulifolius. 
Se uU with a short almost terminal caruncle: follicles not 
S an half longer ed pr REOR leaf- blades of the 
shoots searcely lon 
Follicles i -Stellate- pubescent, ellipsoid, ies 3 or 4 together 
Leaf-blades of P : m shoots ovate in outline, een tdem 
sparingly pubes 3. O. alabamensis. 
Leaf-blades of the. sterile XU prewar eyate in outline, 
acute, densely stellate-pubescen 4. O. stellatus. 
N 
O. australis. 
