TOMPKINS COUNTY FLORA
Sonchus arvensisL.
Mitchell NYNYFA TCUSDA NY
accepted accepted accepted
Field Sowthistle, Moist Sowthistle

Asteraceae

CAYUGA FLORA (1926) NOTES: A weed in rich cultivated or waste places and on shores, often in heavy clay soils; frequent. July-Sept. The Mack farm s. of Ithaca (D.) ; near Coy Glen; various streets in Ithaca (D.) ; C. U. campus, in several places; Renwick; Myers Point (D.) ; Sheldrake (D.) ; Union Springs (D. !) ; Cayuga (D.) ; about Salt Pond w. of Howland Island; and elsewhere. Newf. to Minn, and B.C,, southw. to N. J., Colo., and Utah. Naturalized from Eu. A difficult weed to eradicate. Dudley gives interesting historical facts regarding its introduction in N. Y. State. S. arvensis var. glabrescens: In situations similar to the preceding; frequent. July-Sept. C. U. campus, near the baseball cage and back of Sibley College ; s. of Renwick, and near the Renwick Park (Stewart Park) buildings. Occasional in e. N. A. Bayard Long (see Torreya 22:91, 1922) considers the Sibley College specimens to be S. uliginosa Bieb. The other local specimens with glabrous involucre were not seen by Long, but they are all similar to the Sibley College specimens. They seem to differ somewhat from typical S. arvensis in the characters given by Long, and he may be correct in considering them as specifically distinct.


BH SPECIMENS FOR Sonchus arvensis (this list may be incomplete)
 Ithaca, Beebe Lake, 12 Sep 1953, Dilger WCD344 (BH 112668);

SPECIMENS OF Sonchus arvensis subsp. arvensis
 Ithaca, 1 Sep 1892, Bailey (BH 29125);
 Ithaca, 1905, Baker (BH 29134);
 Ithaca, Cornell University campus, Alumni Field, 3 Aug 1942, Burnham 20629 (BH 29127);
 Ithaca, Sage Place, in bed of Vinca minor, weed, heads yellow, expanded in the morning, plant spreading by rhizomes, 11 Jul 1971, Dress 7897 (BH 29136);
 Ithaca Flats, open field, Sep 1874, Dudley (BH 29124);
 Ithaca, Cornell University campus, Alumni Field, waste clay soil, 29 Jul 1915, Eames & MacDaniels 5328 (BH 29132);
 Ithaca, Cornell University campus, 21 Sep 1914, Georgia 3321 (BH 29129);
 Ithaca, Cornell University campus, near baseball cage, 23 Aug 1916, Metcalf 7326 (BH 29130);
 Ithaca, south of Coy Glen, cultivated field, 23 Aug 1916, Metcalf 7325 (BH 29131);
 East Ithaca, in orchard, 11 Aug 1924, Muenscher 16018 (BH 29128);
 East Ithaca, in orchard, 11 Aug 1924, Muenscher 16018 (BH 66871);
 Ithaca, Cornell University campus, south of ball-cage, terrace, 24 Aug 1913, Palmer 1356 (BH 29126);
 Ithaca, Aug 1892, Rowlee (BH 29135);
 south of Ithaca, bank of Delaware Lackawanna & Western Railroad, 8 Oct 1892, Wiegand (BH 29133);
 Ithaca, near Garden House, 10 Aug 1904, Wiegand (BH 29123);
 Ithaca, Cascadilla Ravine, Cascadilla Woods, at stone steps near tennis courts, 18 Jul 1941, Burnham 20468 (BH 29121);

SPECIMENS OF Sonchus arvensis subsp. uliginosus
 Ithaca, Cornell University campus, north of University Barn, roadside bank, 8 Sep 1936, Burnham 19479 (BH 29109);
 Danby, northeast of Fir Tree Swamp, roadside, head yellow, 13.7 dm high, 21 Jul 1945, Clausen 6642 (BH 29117);
 east of Cornell University campus, roadside, rhizomatous perennial, juice milky, flowers deep yellow, 16 Sep 1947, Dress 118 (BH 29119);
 Ithaca, Renwick, front of Wharton's Studio, 30 Jul 1917, Gershoy & Sand 8992 (BH 29116);
 Ithaca, between Fall Creek, East Hill and Ithaca, open alluvial soils and marshy flats, waste places, 16 Jul 1915, MacDaniels 5327 (BH 29112);
 Ithaca, Cornell University campus, Athletic Field, waste ground, 22 Jul 1915, MacDaniels 5329 (BH 29114);
 Eagle Hill, roadside, 2 Aug 1936, Mandels & Clausen 2252 (BH 29120);
 Ithaca, in Lehigh Valley Railroad yards west of Inlet, 12 Aug 1924, Muenscher 16017a (BH 29111);
 10 miles west of Ithaca, in field, 4 Aug 1928, Muenscher 17341 (BH 29113);
 Ithaca, Cornell University campus, southwest of Ball Cage, waste field, 29 Jul 1919, Randolph (BH 29118);
 Ithaca, Cornell University campus, back of Sibley College, dry roadside, 26 Jun 1916, Wiegand 7327 (BH 29115);
 Ithaca, near Garden House, 10 Aug 1904, Wiegand (BH 29110);
 Lansing, Myers Point, 29 Jul 1932, Eames & Muenscher 18216 (BH 29122);
 Ithaca, Cornell University campus, back of Sibley College, dry roadside, 26 Jul 1916, Wiegand 7327 (BH 66875);

6 IMAGES FOUND: IMAGES 1 - 6:

Sonchus arvensis

Sonchus arvensis

Sonchus arvensis

Sonchus arvensis

Sonchus arvensis

Sonchus arvensis

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