OF ARTS AND SCIENCES. 849 



Hab. Margins of swamps and clamp woods; Newfoundland to New England. 

 — Maine, Aroostook County {Miss Furbish), Kennebunkport (Jesup) ; Massa- 

 chusetts, Ipswich (Ocikcs), Andover and Middleton (Robinson), Wellesley 

 (^'yvraryue), Granby (Jesup), S. Hadley (Mrs. Frisbie). Originally collected in 

 Newfoundland. 



A very pretty and distinct species. 



* * Pedicels very short. Southwestern and Mexican species. 



15. R. FOLIOL03A, Nutt. Stems low (6 to 18 inches high), with 

 very short straight or somewhat curved slender or stout spines, or 

 often unarmed ; prickles rarely if ever present : stipules narrow, 

 usually glandular-ciliate ; leaflets 7 to 11, narrowly or even linear- 

 oblong (the terminal 4 to 15 lines long), acute at both ends, glabrous, 

 or slightly pubescent on the midvein beneath and on the prickly rlia- 

 chis: flowers (H to 2 inches broad) solitary (or 2 or 3), on nearly 

 naked pedicels 2 to 4 lines long ; sepals prickly-hispid, the outer with 

 one or more lobes: fruit depressed-globose, 3 to 5 lines broad. — 

 Torr. & Gray, Fl. 1. 4G0. 



Had. Prairies and hillsides; Arkansas and Indian Territory to Texas. — 

 Arkansas (Nultall, Pitcher, Bi<jdow) ; Indian Territory ( Woodlioxse, Enfjelmann, 

 Butler, Palmer) ; Texas (Drummond, Berlandier, Lindheinwr, Hall, liererchun). 



A very strictly defined species. Tiie flowers are said to be very fragrant. 

 The Florida specimens doubtfully referred to this species by Torrey & Gray 

 are a small-leaved form of R. Carolina. 



16. R. Mexicana, Watson. Stems low (a foot high or less), with 

 stnut straight spreading spines and scattered prickles : stipules narrow, 

 glandular-ciliate ; leaflets 5 or 7, mostly narrowly oblong, acute at 

 both ends (the terminal 4 to 8 lines long), glabrous above or nearly 

 so, somewhat resinous beneath, doubly serrate, the rhacliis hispid and 

 prickly: flowers solitary on hispid pedicels 3 or 4 lines long; outer 

 sepals with a lateral lobe ; receptacle glandular-prickly and the globose 

 fruit 3 or 4 lines broad. — Proc. Amer. Acad. 17. 354. 



Hab. In the Caracol Mountains, Coahuila, Mexico (2121 Palmer). 



B. — Styles connate into a slender smooth cxserted persistent column. Sepals 

 short, deciduous, the base of the calyx persistent. 



17. R. SETIGERA, Michx. Stem very tall and climbing, with stout 

 recurved scattered spines, without prickles: stipules very narrow, 

 glandular-ciliate ; leaflets 3 or 5, oblong-ovate to lanceolate, shortly 

 acuminate, coarsely and simply serrate, smooth above, usually more or 

 less tomentose beneath, 1 to 3 inches long; rhachis glandular-pubes- 

 cent, sparingly prickly : flowers corymbose, sometimes solitary, on 

 slender hispid pedicels, deep rose-color becoming white, nearly scent- 

 less ; sepals hispid, lanceolate (4 to 6 lines long), usually with one or 



