7'.''i I'l.ANT LIFK HK AI,.\ HA M A. 



Alle;;lunian iind Ciiroliiiiati anas. Ontario and soiillierii Now Kii;;lau<l, west to 

 Mimu'suta; i>liio Valley to Missduri. Kansas, and Arkansas, and south al<in<r tbo 

 mountains to Sonlh Carolina. 



Ai.ah.vma: Mountain region. Rich wnodcd hills. 1 )(kalli ('oniity. Mi-ntone, 1,800 

 feet altitndi'. Madison Couuty, Montt'sano, l,r)(iO feet altitude. Clay County, rocky 

 hanks Talhuhga t-'i'i'ek, 1,000 leet altitude. Flowers yellowisli white; May. Not 

 freipient. 



I'v])*' locality : " Hab. in Canada. Kalni." 



ilerli. (ieol. Surv. Herb. Molir. 



Polymuia cauadeusis radiala Gray. Syn. Fl. N. A. 1, ]>t. '2: !';{.*<. 1?<><1. 



Carolinian area. Illinois. Arkansas, and Kansas. 



Alabama: Mountain region. Madison County. llaiil< (if Monte>aM<). (ui limestone 

 rocks. ClayCount.\. Flowers sordid yellow; not fre(|uent. 



Ty])e locality : •• Extends to Hot .'^j^rings, Arkansas, /■'. /,. IIan< ij." 



Herb. Geol. Surv. Herb. Mohr. 



Polymnia uvedalia L. Sp. PI. ed. 2, 2 : 1303. 1703. Hi:ai: Foot. 



Ell. Sk. 2:471. Gray, Man. ed. 6, 270. Chap. Fl. 210. Gray, Syn. Fl N. A. 1, pt. 

 2 : 23S. Coulter, Contr. Nat. Herb. 2 : 204. 



Carolinian and Louisianian areas. Western New York, I'ennsylv:inia, west to 

 Missouri and .Vrkansas. south to Georgia and Florida. 



Ai.ai?am.\: Tennessee X'alley to Coast plain. Shady borders of woods, cojtses, in 

 rich soil. Lauderdale County, l-'lorenee (M. C. Uil><oii). Tuscaloosa, Montgomery, 

 Clarke, IJaldwin, and Mobile ccuiuties. Flowers yellow ; April, May. 



Economic uses: The root, called "bear foot," is used in domestic nu^dicine 



Type locality : " Hab. in Virginia." 



Herb. Geol. Surv. Herb Mohr. 



SILPHIUM l>.Sp. PI. 2:010. 17.53. 



About 12 or 13 species, perennial herbs. Temperate Eastern North America. 

 Silphium laciniatum L. Sp. PI. 2:919. 17.53. Comi'as.s Plant. 



Silphium qummiferum Ell. Sk. 2 :460. 1821-24. 



Ell. Sk. 1. c. Gr.^y, Man. ed. 6. 270. Chap. Fl. 2i0. Gray, Svn. Fl. N. A. 1, j.t. 2 : 242. 

 Coulter, Contr. Nat. Herb. 2 : 205. 



Allegheuian to Louisianian area. Dakota, Minnesota, Ohio to Missouri, Arkansas, 

 and Colorado; south from Tennessee to Georgia, west to Texas. 



Ala«a>l\ : Prairie region to Lower division of Coast Pine belt. Montgomery 

 County, prairies on Pintlalla Creek. Monroe County, Claiborne. Flowers July, 

 August : not rare. 



Type locality : " Hab. in America .septentrioiiali, Mississipjii. Collinson." 



Herb. Geol. Surv. Herb. Mohr. 



Silphium terebinthiiiaceum Jaisq. Hort. Vindeb. 1:/. ^.3. 1770. Pi;aihie Dock. 



Ell. Sk. 2:463. Gray, Man. ed. 6, 270. Chap. Fl. 220. Gray, Syn. Fl. N. A. 1. pt. 

 2 : 212. 



Allegheuian and Carolinian areas. Ohio, Michigan, west to Dakota, Nebraska, 

 south to Arkansas, and from Kentucky along the monntains to Georgia. 



Alaisa.ma: Lower hills. Grassy openings, borders of lields. Calhoun County, 

 Weaver {E. A. Smith). August; local and rare. 



Type locality unknown ('' Patriam ignoro"). 



Silphium compositum Miclix. Fl. Bor, Am. 2 : 145. 1803. Southkkn Rosinwi:ki>. 



Ell. Sk. 2 : 462. Chap. Fl. 220; ed. 3,241. Gray, Syn. Fl. N. A. 1, pt. 2:241. 



Carolinian and Louisianian areas. North Carolina, along the mountains to 

 Georgia. 



Alabama: Mountain region to Central Pine belt. Dry gravelly or rocky ridges. 

 Cullman County. Tuscaloosa Couuty, 450 feet altitirde. Clay County, 2,000 feet 

 altitude, barren pine ridges. Talladega, Tallapoosa, and Chilton counties. Flowers 

 .July, August; frequent; most abundant throughout the arid siliceous pine-clad 

 ridges of the Metamorphic region. 



Varies greatly in form and size of the leaves, from ovate pinnatisected {S. compos- 

 itum var. michauxii Torr. & Gr.) to rotund; or uniform, cordate, more or less lobed 

 (S. compositum var. reniformc Torr. & Gr,), and broadly ovate subcordate unequally 

 and obtusely toothed (5. compositum var. ovalifolium Torr. A Gr. ). 



Type locality : " Hab. in sylvis maritimis, a Carolina ad Floridam." 



Herb. Geol. Surv. Herb. Mohr. 



