7§ 



ROCHESTER ACADEMY OF SCIENCE. 



[Oct. S, 



531. 



532. 

 533- 



534. 



530. A. Canadensis Michx . 



Rare. Bluffs along lake Ontario and Irondequoit bay. 

 A. vulgaris L. Common Mugwort. 



Waste places ; abundant in the south-eastern part of Rochester. 

 A. biennis Willd. 



Rare. Recently introduced along N.Y. C. railroad, Miss Beckwith. 

 A. Absinthium L. Common Wormwood. 



Occasional in fields and by roadsides. 



207. TUSSILAGO Tourn. [L.] 



T. FarfaraL. Colts-foot. 



Wet clay soil. Banks Genesee river, Rochester. Sweden. Cale- 

 donia, Livingston county. Bergen, Genesee county. Wayne county. 



208. PETASITES Tourn. 



535. P. palmata Gray. (Nardosjnia palmata Hook.) \Tussilago palmata Ait.] 



Sweet Colt's-foot. 



Rare. Cleared swamp in Irondequoit, Dr. C. M. Booth. 



209. SENECIO Tourn. [L.] 



536. S. vulgaris L. Common Groundsel. 



Waste grounds and cultivated fields ; common about Rochester. 



537. S. aureus L. 



Common in wet ground. 



538. S. aureus L. var. Balsamitae Torr. & Gray. [S. Balsamitce Muhl.] 



Rare. Bergen swamp, Genesee county. 



210. CACALIA L. 



539. C. suaveolens L. Indian Plantain. 



Rare. Shore of Irondequoit bay, Dr. C. M. Booth. Penfield, G. T. 

 Fish. Bank of Genesee river, near the mouth of Black creek, M. S. 

 Baxter. Avon, Livingston county, Dr. B. D. Gree?te in Buff. Cat. 



540. C. atriplicifolia L . 



Rare. Near Rochester, Z. H. Harris. Greece, Bradley. 



211. ERECHTITES Raf. 



541. E. hieracifolia Raf. \E. hieracifolia (L.) Raf. J Fire-weed. 



Moist woods and recent clearings ; common. 



CALENDULA L. 



— C. officinalis L. Pot or Cape Marigold. Escaped to roadside. 



2Z2. ARCTIUM L. 



542. A. Lappa L. {Lappa officinalis All.) Burdock. 



Waste places ; common. 



213. CNICUS Tourn. (Cirsium Tourn. of Man.) 



543. C. lanceolatus Hoffm. (Cirsium lanceolatum Scop.) \Carduus lance- 



olatus L.] Common Thistle. 



Pastures, roadsides and waste places ; common. 



