306 CICHORIACEA.E 



N. Y., N. J. and Pa. Nat. from Eu, — Pennsylvania . Wayne ; Susque- 

 hanna ; Wyoming ; Lackawanna ; PorTER ; Centre ; Erie. 



3. Hieracium venosum L. RaTTi^ESNakE-weEd. (Man. p. 904; 

 I. F. f. ssb'/. ) Dry woods and thickets, Me. to Man., south to Ga., Ky. 

 and Neb. — Pennsylvania : Monroe ; Northampton ; Bucks ; Dela- 

 ware ; Chester ; Lancaster ; Montour ; Columbia ; Franklin ; 

 Huntingdon ; Allegheny. 



4. Hieracium Marianmn Willd. Maryland Hawkweed. (Man. 

 p. 904; I. F. /. Sj68.) In dry woods and thickets, R. I. to southern 

 N. Y., Pa., Ky., Ala. and Fla. — Pennsylvania; Northampton; Mon- 

 roe ; DELAWARE ; Chester ; Lancaster. 



5. Hieracivun Greenli Porter &Britton. GrEEn' S Hawkweed. (Man. 

 p. 905 ; I. F. y! 3569.) In dry soil, mountains of Pa. to Va. and W. Va. — 

 Pennsylvania: Franklin, Two Top Mt. ; Huntingdon, Tuscarora Mts. 



6. Hieracium Canadense Michx. Canada Hawkweed. (Man. 

 p. 905 ; I. F. /. ssyr. ) In dry woods and thickets, N. S. to the N. W. 

 Terr., south to N. J. and Mich. — Pennsylvania: Monroe; Bucks; 

 Huntingdon. 



7. Hieracium paniculatum L. PaniclEd Hawkweed. (Man. p. 905; 

 I. F. f. 3572.) In dry woods, Me., Quebec to Ga., Ala. and Ky. — Penn- 

 sylvania : Bucks ; Delaware ; Chester ; Lancaster ; Allegheny. 



8. Hieracium scabrum Michx. Rough Hawkweed. (Man. p. 905; 

 I. F. /. 3573-) In dry woods and clearings, N. S. to Minn., Ga., Neb. 

 and Kans. — Pennsylvania : Northampton ; Bucks ; Delaware ; Ches- 

 ter ; Lancaster ; Montgomery ; York ; Franklin ; Huntingdon ; 

 Crawford ; Erie ; Allegheny. 



9. Hieracium Gronovii L. Hairy Hawkweed. (Man. p. 905; 

 I. F. /. 3S74.) In dry soil, Mass. to Ont., 111., Fla. and Tex. — Pennsyl- 

 vania : Northampton ; Bucks ; Delaware ; Chester ; Lancaster ; 

 Franklin. 



12. NABALUS Cass. 



Bracts of the involucres glabrous or sometimes with a few scattered hairs. 

 Involucres slender, about 2 mm. thick, 5-7-flowered, light green : pappus 



light straw-colored. 1 . JV. aliissimus. 



Involucres stout, 3-6 mm. thick, 9-16-flowered, deep green, glaucous, purple. 

 Pappus deep cinnamon-brown. 2. TV. albus. 



Pappus straw-color or light brown. 

 Larger bracts of the outer involucre lanceolate : pappus surpassing the 

 inner involucral bracts. 3. N. serpeniarius. 



Larger bracts of the outer involucre ovate or triangular-ovate : pappus 

 and inner involucral bracts about equal in length. 



4. .A^. trifoHatus. 

 Bracts of the involucres copiously pubescent. 

 Involucres 8-i6-flowered : inflorescence thyrsoid. 5. N. racemosus. 



Involucres 20-25-flowered ; inflorescence corymbose-paniculate. 



6. N. crepidineus. 

 1. NabalUB altissimus ( L. ) Hook. TalL White LETTUCE. (Man. 

 p. 906 ; I. F.y. 3576.) In woods and thickets, Newf. to Man., south to 



