432 Karl M. Wiegand and Arthur J. Eames 



3. P. altissima L. Rattlesnake Root. Lion's-fuot. 



Sheltered banks, or deep, chiefly moist, woodlands, in rich gravelly soils ; frequent. 

 Aug. 25-Oct. 10. 



Rare or absent on the chestnut soils of the Spencer and Danby hills ; frequent 

 about McLean and in the ravines of the basin ; local in low sandy, possibly mucky, 

 woods, Junius. 



Newf . to Man., southw. to Ga. and Tenn. ; rare on the Coastal Plain. 



The following extreme types of leaves may be noted: (a) leaves not lobed ; 

 (b) leaves deeply lobed. 



49. Hieracium (Tourn.) L. 



a. Leaves all basal, or 1-2 also on the stem near its base. 

 b. Plant with elongated stolons ; rootstocks slender, creeping. 

 c. Leaves tomentose beneath; scapes bearing 1-3 (4) heads. 1. H. Pilosella 

 c. Leaves not tomentose beneath ; scapes bearing several or many heads, in 

 rather dense clusters. 

 d. Flowers orange. 2. H. aiirantiacum 



d. Flowers yellow. 3. H. pratense 



b. Plant without elongated stolons ; rootstocks short and stout ; inflorescence loose. 

 c. Leaves oblanceolate or spatulate, green. 4. H. fiorentimim 



c. Leaves obovate or elliptic-oblong, usually purple-veined. 5. H. venosum 

 a. Leaves mostly cauline, scattered. J 



b. Heads of medium size or small, 1-2.3 cm. in diam. 

 c. Plant glabrate and glaucous (except the stem base), slender-branched; leaves 

 lanceolate, acute, few-toothed. 6. H. paniculatum 



c. Plant rough-hairy, stouter ; leaves obovate, obtuse, subentire. 



7. H. scabrum 

 b. Heads large, 2.5-4.5 cm. in diam. ; leaves coarsely toothed. 8. H. canadense 



1. H. Pilosella L. Mouse-ear. 



Lawns and grassy banks ; rare. June-July. 



Wiegand lawn, Upland Road, Cayuga Heights, 1920, and still persisting. 



Eastern States. Naturalized from Eu. 



2. H. aurantiacum L. Orange Hawkweed. Devil's PainT-brush. 



A weed in dry fields and pastures, in rather heavy sterile soils and often in 

 gravelly light soils ; very abundant. June-July 10. 



Of recent introduction, but now common everywhere throughout the basin, in the 

 proper soils. Dudley gives interesting notes on the early records of its appearance 

 here. 



N. B. to Out., southw. to N. J. and Pa. Naturalized from Eu. 



3. H. pratense Tausch. King Devil. 



A weed in situations and soils similar to the preceding; common. June-July 10. 

 Of more recent introduction than the last preceding species and lately becoming 

 common about Ithaca, where it usually grows in company with that species. 

 Que. to s. N. Y. and Pa. Naturalized from Eu. 



4. H. FLORENTINUM All. KlNG DEVIL. 



A weed in more gravelly dry sterile soils than the preceding; rare. June-Aug. 



Gravelly hillside pasture, n. e. corner of Butler Township, near Westbury Bog, 

 1916 (L. H. MacDaniels & A. J. E.). [Along railroad tracks at Little York, Cort- 

 land Co.] 



E. Que. and Ale., to Ont. and N. Y. Naturalized from Eu. 



