TOMPKINS COUNTY FLORA
Ambrosia artemisiifoliaL.
Mitchell NYNYFA TCUSDA NY
accepted accepted accepted
Annual Ragweed

Asteraceae

CAYUGA FLORA (1926) NOTES: Dry fields, roadsides, and waste places, in various soils; very common. Aug. 15-Sept. 15. N. S. to B. C, southw. to Fla. and Mex., including the Atlantic Coastal Plain. The native range is now obscure, but the species was probably not indigenous east of the Allegheny Mts. This plant is believed to be the principal cause of autumnal hay fever. The pollens of this and other species of Ambrosia, as well as that of Iva, are equally virulent.


BH SPECIMENS FOR Ambrosia artemisiifolia (this list may be incomplete)
 Ithaca, north side of Cascadilla Creek, near Cascadilla Park, along gorge trail, in gravelly soil, Herb ca. 0.6 m tall, 18 Sep 1983, Abramsky 107 (BH 20887);
 Ithaca, Cornell University Campus, 1944, Allen (BH 78784);
 Ithaca, Cornell University Campus, slope toward Cascadilla Creek, back of Crescent, along path, 8 Sep 1936, Allen 19469 (BH 20881);
 Ithaca, Cornell University Campus, slope toward Cascadilla Creek, back of Crescent, along path, 8 Sep 1936, Allen 19468 (BH 20882);
 Ithaca, 12 Sep 1917, Bailey (BH 20872);
 Ithaca, 12 Sep 1917, Bailey (BH 20871);
 Ithaca, 25 Sep 1915, Bailey (BH 20873);
 Ithaca, 1905, Baker (BH 20876);
 Ithaca, near Coy Glen, roadside, 1 Sep 1917, Bechtel 8949 (BH 20879);
 Ithaca, Forest Home, 17 Sep 1919, Bechtel (BH 20897);
 Ithaca, Cornell University Campus, Plant Science, newly seeded lawn, 25 Oct 1932, Burnham 18157 (BH 20884);
 Ithaca, downtown, West Court Street, growing in lawn, 15 Sep 1979, Chazdon 9 (BH 67042);
 Ithaca, ragweed, annual, Summer 1932, Curtis 1307 (BH 67636);
 Town of Dryden, 107 Neimi Road, Five Wells Nature Preserve, between Maple and Ridge Roads in power line cut, 8 Aug 2004, Dilger FWNP2066 (BH 112582);
 Town of Dryden, 107 Neimi Road, Fivewellsania, east of Log House, on disturbed ground, very common, 9 Sep 1981, Dilger WCD987 (BH 113366);
 Ithaca, fields, Aug 1875, Dudley (BH 20899);
 Ithaca, Cayuga Heights, 26 Oct 1923, Eames (BH 67046);
 Ithaca, Six Mile Creek, south side, roadside, 23 Aug 1915, Eames & Thomas 5265 (BH 20898);
 Ithaca, bank of Fall Creek ca. 500 m from confluence with Lake Cayuga, dense herb layer on wet alluvium, with Acer negundo and Bidens frondosa, Herb ca. .5m. tall, 13 Sep 1983, Field 5 (BH 20888);
 Ithaca, Collegetown, along sidewalk in full sun with Plantago, clover, and grasses, abundant, herb, 18 Sep 1983, Haas 56 (BH 20886);
 Ithaca, Cornell University Campus, north side of Loes Hall, steep bank, herb, 24 Oct 1964, Handlos (BH 20867);
 East Ithaca, south of cemetery, cultivated ground, purple leaves and stem, 25 Jul 1916, Metcalf 7286 (BH 20870);
 Ithaca, Six Mile Creek, near lumber yard in ravine, 4 Sep 1916, Metcalf 7284 (BH 20878);
 Ithaca, Renwick Flats, 18 Aug 1920, Muenscher & Bechtel 587 (BH 20874);
 Ithaca, Cornell University campus, north of Forestry Building, dry soil, 26 Aug 1913, Palmer 1284 (BH 20883);
 Ithaca, Cornell University Campus, Agriculture College, south of Main Building, dry roadside, 26 Jul 1913, Palmer 1283 (BH 20869);
 Ithaca, Fall Creek Ravine, at head of Beebe Lake, exposed bar, 27 Aug 1913, Palmer 1285 (BH 20896);
 Ithaca, Cornell University Campus, along road in front of Armory, waste places, Sep 1916, Reidy 7285 (BH 20885);
 Ithaca, Cornell University Campus, 25 Oct 1943, Schuster (BH 67043);
 Ithaca, Cornell University Campus, 25 Oct 1943, Schuster (BH 67047);
 Ithaca, Cayuga Heights, in garden of Dr. C. H. Uhl, Weed. All heads are pistillate, 17 Aug 1955, Uhl (BH 20875);
 Ithaca, Hanshaw Road and Townline Road, Uhl garden, pistillate flowers only, 22 Aug 1952, Uhl (BH 20880);
 Ithaca, Hanshaw Road and Townline Road, Uhl garden, pistillate flowers only, 22 Aug 1952, Uhl (BH 67044);
 Ithaca, Hanshaw Road and Townline Road, Uhl garden, pistillate flowers only, 22 Aug 1952, Uhl (BH 67045);
 Ithaca, railroad track, near Renwick, dry soil, 12 Aug 1914, Wiegand 3297 (BH 20894);
 Ithaca, Cayuga Heights, Upland Road, clay soil, 19 Sep 1922, Wiegand 14974 (BH 20868);
 Ithaca, 28 Aug 1894, Wiegand (BH 20877);
 Ithaca, Cornell University campus, parking field southwest of Bailey Hall, 2 Sep 1942, Burnham (BH 20895);
 Town of Ithaca, end of Orchard Hill Rd., roadside, 30 aug 2009, Durkee (BH 102847);   VEmap  GOOmap
 Ithaca, west of Cayuga Street on Railroad Avenue, 22 Sep 1894, Rowlee (BH 20933);

6 IMAGES FOUND: IMAGES 1 - 6:

Ambrosia artemisiifolia

Ambrosia artemisiifolia

Ambrosia artemisiifolia

Ambrosia artemisiifolia

Ambrosia artemisiifolia

Ambrosia artemisiifolia

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