200 CALLITRICHACEAE 



Central and Atlantic States. — Pennsylvania . Northampton ; Bucks ; 

 Frankwn ; Huntingdon ; Centre. 



7. Euphorbia dentata Mlchx. Xoothed Spurge. (Man. p. 594 ; 

 I. F. f. 2324.) In dry or moist soil, Pa. to S. Dak., Tenn., La. and Mex. 

 — Pennsylvania : Lancaster. 



8. Euphorbia Ipeoacuanhae L- Wild Ipecac. Ipecac Spurge. 

 (Man. p. 594 ; I. F. /. 2j2j.) In dry sandy soil. Conn, to Fla., mostly 

 near the coast. Also in southern Ind. — Pennsylvania: Bucks, Turkey 

 Hill ; Crawford. 



9. Euphorbia Lathyris L. Caper or MyrTi<e Spurge. (Man. p. 

 594; LV./. 2327.) In waste places, N. J. to N. C. Also in Calif. Native 

 of Bu. — Pennsylvania : Northampton ; Bucks ; Chester ; Lancas- 

 ter ; LEBANON ; Frankwn. 



10. Euphorbia Darlingtonii A. Gray. Darlington's Spurge 

 (Man. p. 594; I. F. /. 2328.) N. Y., Pa. and N.J. to N.. Q.— Pennsyl- 

 vania : Chester ; Lancaster ; Franklin ; Centre. 



11. Euphorbia platyphylla L- Broad-leaved Spurge. (Man. p. 

 595; I. F. f. 2330.) Along the shores of the St. Lawrence River and 

 the Great Lakes. Nat. from Eu. — Pennsylvania : ERIE ; Clinton. 



12. Euphorbia Helioscopia L. Sun Spurge. WarTweed. (Man. p. 

 595 ; I. F. /. 2332.) In waste places in the valley of the St. Lawrence 

 and along the Great Lakes, extending south to N. H., N. Y. and Ohio. 

 Nat. from Eu. — Pennsylvania : ERIE ; Clinton. 



13. Euphorbia Peplua L. PETTY Spurge. (Man. p. 595; I. F./. 2333.) 

 In waste places, western N. Y. to N. J. and Pa. Adv. from Bn.— Pennsylva- 

 nia : Lancaster ; Northampton, streets of Easton ; Allegheny. 



14. Euphorbia commutata Engelm. Tinted Spurge. (Man. p. 

 595 ; I. F.y. 2334.) On hillsides. Pa. to Minn., Fla. and Mo. — Pennsyl- 

 vania : Lancaster, Safe Harbor ; Franklin ; Centre ; Allegheny. 



15. Euphorbia Esula L. LeaEy Spurge. (Man. p. 595; I. F./. 

 233S-) 111 waste places, Meiss. to N. Y. and Mich. Nat. from Eu. — 

 Pennsylvania : Franklin. 



16. Euphorbia lucida Waldst. & Kit. Shining Spurge. (Man. p. 

 596; I. F. / 2336.) In fields, southern N. Y. and Pa. Nat. from Eu.— 

 Pennsylvania : Susquehanna. 



17. Euphorbia Cypaiissias L. Cypress Spurge. (Man. p. 596; I. 

 F- / 2337. ) Waste places, N. Eng. to Va. and to Kans. Nat. from Eu. — 

 Pennsylvania : Monroe ; Pike ; Northampton ; Bucks ; Lancaster ! 

 Allegheny. 



Family 8. CALLITRICHACEAE Lindl. Water Starwort Family" 

 1. CALLITRICHE L. 



Fruit manifestly pedicelled. i. C. Ausiinii. 



Fruit sessile. 

 Bracts present. 

 Styles much shorter than the fruit. ■^. C. palustris. 



Styles fully as long as the fruit. 3. C. helerophylla. 



Bracts wanting. 4. C. bifida. 



