166 DICOTYLEDONOUS PLANTS. 



1. HIERACIUM. Linn. Don. 



Involucre imbricate. Receptacle subfavose. Acines sim- 

 ple at the apex. Pappus with the rays numerous, persistent, 

 setaceous-pilose, arranged in one row. Flowers yellow, so- 

 litary or corymbose. Syngenesia. Mqualis. 



* Stemless. Scape many-fiowored. 



1. H. venosum Linn. : scape hairy at base, smooth and branching 

 above; branches 1 -flowered ; leaves obovate-oblong, entire, a little 

 hairy above ; margins ciliate ; veins coloured ; involucre smooth. 



HAB. Shady woods. Can. to Car. July, Aug. L(. Scape 

 1 2 feet high, branching towards the summit. Leaves all radi- 

 cal, spreading on the ground, coloured with dark red veins. 

 Flowers panicled, on slender pedicels, yellow. Veiny Hawkweed. 



** Stem leafy, many-flmccred. 



2. //. ffronovii Linn. : radical leaves oblong, obtuse, very entire, 

 ciliate ; cauline ones ovate 'and clasping ; flowers in loose racemes ; 

 pedicels glandular-pilose ; involucre smooth. 



HAB. Dry woods. Can. to Car. July, Aug. If .Stem 2 feet 

 high, nearly naked. Flowers yellow, in a long terminal panicle 

 or raceme. Both Pursh and Elliott have probably taken this 

 for the next. 



3. H. marianum WlUd. : stem erect, villous ; leaves obovate-oblong, 

 strigose-villous on the midrib ; lower ones slightly toothed ; pedicels 

 and involucre hispid. H. gronovii var. foliosum Pursh. H. scabnim 

 Mich. 



HAB. Woods. Can. to Car. July, Aug. If. Stem 2 feet high, 

 very rough. Floicers in a small irregular panicle, yellow. 



Rough ll/tir/,>ri til. 



4. H. paniculatum Wittd.: stem erect, leafy, smooth above, whitish 

 tomentose below ; leaves lanceolate, oblong, few-toothed, membrana- 

 ceous, naked ; pedicels divaricate, capillary, 1 -flowered ; bracts seta- 

 ceous. 



HAB. Woods. Can. to Car. July Sept. "U.Stcm slender, 

 1 2 feet high. Leaves thin, paler beneath. Flowers small, on 

 long slender pedicels, forming a large panicle. 



5. H. kalmii Linn. : stem erect, simple, smoothish ; leaves sessile, 

 oblong-lanceolate, acuminate, acutely and divaricately toothed; pedicels 

 tomentose, somewhat in the form of an umbel ; involucre loose.//. 

 virgatum and H. fasciculatum Pitrsh. 



HAB. Rocky woods. Can. and N. S. Aug. L. Stem 2 feet 

 high. Leaves with acute diverging teeth. Pedicels axillary and 

 terminal, covered with down, thick, erect. 



2. HARPALYCE. Don. 



Involucre cylindric, many-leaved, in a single row, with a few 

 very short oppressed scales at base. Receptacle slightly pit- 



