LACK A WANNA AND WYOMING FLORA. 35 



CNICUS, TOURN. 

 THISTLE. 



407. C. LANCEOLATUS, Hoffm. Common. 



408. C. altissimus, Willd. Var. discolor, Gray. Frequent in lower 

 Lackawanna and Wyoming Valleys. 



409. C. pumilus, Torr. PASTURE T. Tobyhanna Mills and Pocono 

 Station. Prof. Porter. Campbell's Ledge ; Scott Township road. 

 Dudley. 



410. C. ARVENSIS, Hoffm. CANADA THISTLE. Occasional throughout. 



KRIGIA, SCHREBER. 



DWARF DANDELION. 



411. K. Virginica, Willd. Abundant on dry knolls about Kingston. 



Thurston. 



HIERACIUM, TOURN. 



HAWKWEED. 



412. H. AURANTIACUM, L. By R. R. above Kingston, '91. Thurston. 



413. H. Canadense, Michx. Woods, occasional. 



414. H. paniculatum, L. Frequent. 



415. H. venosum, L. RATTLESNAKE HAWKWEED. Frequent. 



416. H. scabrum, Michx. In woods. The slender form approaching 

 H. Marianum, occurs along Mountain Inn road; on Penobscot 

 Knob, and elsewhere. Dudley. 



PRENANTHES, VAILL. 



417. P. alba, L. Mountain Inn road ; Bald Mountain woods; com- 

 mon. Dudley. 



418. P. serpentaria, Pursh. Mountain woods; frequent. Var. nana, 

 Gray. Top of Penobscot Knob. Dudley. 



419. P. altissima, L. Tobyhanna Mills. Prof. Porter. Near Kings- 

 ton. Thurston. 



TARAXACUM, HALLER. 



420. T. OFFICINALE, Weber. DANDELION. Common. 



LACTUCA, TOURN. 

 LETTUCE. 



421. L. Canadensis, L. WILD LETTUCE. Ledge near Keyser Val- 

 ley ; Pocono Summit. Dudley. Kingston. Thurston. 



