EUPHORBIACEAE 197 



5. Polygala incamata L- Pink Milkwort. (Man. p. 584 ; I. F. /. 

 2280.) In dry soil, Ont. and Wis. to N. J. and Pa., Fla. and Mex. — 

 Pennsylvania : Chester ; Lancaster ; Huntingdon. 



6. Polygala virideacens L. Fiei,d or Purple Mii^kwort. (Man. 

 p. 584; I. F. /. zzSi.) In fields and meadows, Ont. to Minn., N. Eng., 

 N. C. and La. — Pennsylvania : KorthampTon ; Bucks ; Crawford ; 

 Delaware ; Chester ; Lancaster ; Franklin ; Erie ; Allegheny. 



7. Polygala Nuttallii T. & G. NuTTall's Milkwort. (Man. p. 584 ; 

 I. F.y. 2284.) In dry sandy- soil, Mass. to N. C, Ala. and Mo. — Pennsyl- 

 vania : Pike ; Bucks ; Delaware ; Tinicum ; Chester ; Lancaster ; 

 Franklin. 



8. Polygala Senega L. Seneca Snakeroot. Mountain Flax. 

 (Man. p. 584 ; I. F. /. 228^- ) In rocky woods, N. B., to Minn, and the 

 Canadian Rocky Mts., south to N. C. and Mo. — Pennsylvania : Bucks ; 

 Philadelphia ; Chester ; Lancaster ; Huntingdon ; Blair. 



9. Polygala polygama Walt. Racemed Milkwort. (Man. p. 585 ; 

 I. F. /. 228/.) In dry soil, N. S. to the Lake of the Woods, south to Fla. 

 and Tex. — Pennsylvania : Philadelphia ; Erie. 



10. Polygala pauoifolia Willd. Flowering WinTERGREEn. 

 Fringed Milkwort. (Man. p. 585 ; I. F. /. 2288.) In moist rich 

 woods, N. B. and Anlicosti to the Saskatchewan, south to Ga. and 111. — 

 Pike ; Monroe ; Northampton ; Berks ; Lehigh ; Chester ; Lan- 

 caster ; Dauphin ; Perry ; Schuylkill ; Tioga ; Franklin ; Ful- 

 ton ; Bedford ; Huntingdon ; Somerset. 



Family 7. EUPHORBIACEAE J. St. Hil. Spurge Family. 



Flowers not in an involucre : calyx always present. 

 Ovules 2 in each cavity of the ovary. i. PhyixanthuS. 



Ovule I in each cavity of the ovary. 

 Plants clothed with stellate pubescence or scales. 

 Ovary and dehiscent capsule 2-4-celled, mostly 3-celled. 



2. Croton. 

 Ovary and indehiscent achene-like capsule i-celled. 3. Crotonopsis. 

 Plants pubescent with simple or merely gland-tipped hairs, or glabrous. 

 Inflorescence spicate : leaf-blades not peltate. 4. Acalypha. 



Inflorescence racemose or paniculate : leaf-blades peltate. 



5. RICINUS. 



Flowers in an involucre, the calyx represented by a minute scale at the base of 

 the filament-like pedicel. 6. Euphorbia. 



1. PHYLLANTHUS L. 



1. PhyllanthusCarollnensisWalt. Carolina Phyllanthus. (Man. 



p. 586 ; I. F./. 2289.) In sandy or gravelly soil, eastern Pa. to 111., Fla., 



Tex. and C. Am. Pennsylvania : Lancaster ; York, on Susquehanna ; 



Chester. 



2. CROTON L. 



1. Croton glanduloBus L. Glandular Croton. (Man. p. 586; 

 I. F. /. 22go. ) In sandy soil, Va. to Iowa and Kaus., south to Fla. and 



