Dicotyls or Exogerioiis Plants. 67 



15. Genus UL-MA'-RI-A. — Perennial herbs with pinnate leaves and 

 panicled cymose flowers; stipules kidney-form; calyx 5-cleft, short; 

 pods 5-8. 



Ul-ma'-ri-a ru'-bra Hill. [Spircra lobata Jacq.) Queen of the Prairie. — 

 Plant 2-8 ft. high; flowersideep peach-blossom color, the petals and 

 sepals often four. 



16. Genus RO'-SA. — Calyx- tube urn-shaped, contracted at the 

 mouth, becoming fleshy in fruit; ovaries hairy, becoming bony in 

 fruit ; shrubs with odd-pinnate leaves. 



A. Styles cohering in a protruding column. 



Ro'-sa se-tig'-e-ra Mx. Climbing or Prairie Rose. — Stems climbing^ 

 armed with nearh' straight scattered prickles ; leaflets 3-5, ovate. 



A. St vies distinct, sepals connivcnt after floieeving, persistent. 



Ro'-sa blan'-da Ait. Wild Rose, — Stems 1-3 ft. high, wholly un- 

 armed (or rarely with prickles) ; leaflets 5-7, cuneate at base, serrate. 



A. Styles distinct, sepals spreading after flowering and deciduous. 



(b. Leaflets mostly finely many-iooihed.) 



Ro'-sa car-o-li'-na L. Carolina Rose. — Stems usually tall, 1-7 ft. 

 high; spines stout, straight or usually more or less curved; leaflets 5-9, 

 usually narrowly oblong and acute at each end, or broader. 



(b. Leaflets coaisely toothed) 



Ro'-sa lu'-ci-da Ehrh. Wild Rose. — Stems often tall and stout (a 

 few inches to ft.); spines stout and usually more or less hooked; 

 stipules more or less dilated ; leaflets mostly 7 ; outer sepals frequently 

 with 1 or 2 lobes. 



Ro'-sa hu'-mi-lis Marsh. Wild Rose. — Stems usually low, 1-3 ft. 

 high and more slender, less leafy; spines straight, slender, spreading 

 or sometimes reflexed; stipules narrow, rarely somewhat dilated; 

 outer sepals always more or less lobed. 



(b. Leaflets doubly serrate.) 



Ro'-sa ru-bi-gin-o^-sa Iv. Sweet Brier. — Stems with stout recurved 

 spines; leaflets densely resinous beneath and aromatic ; the short 

 pedicels and pinnatifid sepals hispid. 



