Arabis canadensis L. SICKLE-POD. Ontario: "... in the woods from Niagara Falls to Queenston, Ont. (Macoun.)" Macoun (1883). "Goat Island, and elsewhere," Day (1888). Ontario, Queen Victoria Park, Panton (1890). Ontario, Niagara Park System, Cameron (1895). Ontario: Niagara Gorge, sandy soil, Miller (85), June 29, 1950; Niagara, J. G. Wright, July 4, 1924 (6154), Heimburger (1955). "Ontario: gorge of River at Niagara Glen (Johnson)," Zenkert (1934). "... the largest (Arabis) and most common (in the Glen)," Hamilton (1943). "[Niagara] Glen," sight record, Yaki (1970).

 

Ontario: Niagara Glen, Cowell, Oct. 1, 1898 (BUF); , Niagara Glen; rocky woods. Frank W. Johnson 478 June 17, 1923 (BUF);

 Niagara Glen, rich soil on limestone, Zenkert, June 20, 1931 (BUF); woods, School of Horticulture, Hamilton, July 9, 1940 (NFO).

Range: sOnt-swPQ. Status: Rare in Canada, Endangered in New Hampshire, Argus & White (1977).

*Arabis caucasica Schlect. ex Willd. ALPINE or WALL ROCK-CRESS. New York: abundant population along base of caprock, escarpment at Lewiston (from gardens above), Eckel, June 16, 1988 (BUF). Ontario: Smeaton's Cove just S of the Lewiston-Queenston Intnl. Bridge, wooded, weedy fence margin, crest of gorge, Eckel 13285 (BUF).

Not listed in the Flora of the Niagara Frontier Region by Zander and Pierce, 1979, and is listed here as new to the flora. Mitchell (1986) includes it in his list of the plants of New York State as a rare introduction. It is reported for Ontario by Morton and Venn (1990, as A. alpina ssp. caucasica (Schlect. ex WIlld.) Briq.).

 

Several specimens at NFO indicate this species has been part of the School's horticultural programs, indeed, I have been informed the population from which the Ontario specimen cited was taken ultimately derived from garden clippings, etc., pitched over the crest of the gorge at this station. These populations at Smeaton's Cove have persisted for several years.

Arabis diverticarpa A. Nels. PURPLE ROCK-CRESS. Ontario: Niagara Glen, Soper & Shields (4397), May 20, 1950 (82.968); Whirlpool, Wm. Scott, May 24, 1907 (6151), Heimburger (1955).

Reported as threatened in New York State by Mitchell (1986): "native plants known to have occurred in New York State five times or fewer (up to nine historical sites where some are known to be extirpated". Not reported as occurring in the Niagar Frontier flora by Zander and Pierce, 1979).

Arabis drummondii Gray. DRUMMOND'S ROCK CRESS. Lewiston, Niagara county, 1863, G. W. C. [George W. Clinton] (Regent 1865 p. 204). "Rare. Lewiston, Niag. Co.," Day (1882). "Lewiston. Not common," Day (1888). ).  (As A. confinis), "Niagara Gorge, purplish, rare, "both sides, Field Club, 1894. (As Arabis confinis) Ontario, Niagara Park System, Cameron (1895). "DeVeaux College woods, Suspension Bridge," E.C. Townsend, May 8, 1896, Eckel (1986). Niagara Glen, T. J. Ivey, 18/5'07 (TRT), Heimburger (1955). "Rather rare. Along areas of limestone outcrop .... Ontario: gorge of River at Niagara Glen, 1931 (Zenkert)," Zenkert (1934). "... in the [Niagara] Glen," Hamilton (1943).

New York: "DeVeaux College Woods, Suspension Bridge," E.C.  Townsend, May 8, 1896 (BUF); Niagara Falls, Edna Choate, May 21, 1898 (BUF); all from Lewiston: Townsend, May 8, 1896 (BUF), Dark, May 27, 1893 (BUF), Clinton (BUF), Day (BUF).

 

Ontario: Niagara Glen, Edna Porter, May 7, 1898 (BUF); Niagara Gorge, limestone slopes at Niagara Glen. Charles A. Zenkert May 14, 1931 (BUF).

 

Range: Aka-NWT, BS-Sask, ncOnt, sPQ-Lab, local. Ontario: L. Superior. Status: Rare in Ontario, rare in Indiana, Argus & White (1977). Reported as rare in the Niagara Frontier Region by Zander and Pierce (1979).

Arabis glabra (L.) Bernh. TOWER CRESS. (As A. perfoliata) "near Clifton, Ontario," Day (1888). Ontario, Queen Victoria Park (as Arabis perfoliata Lam.), Panton (1890). Ontario, Niagara Park System (as A. perfoliata), Cameron (1895). "Niagara Co.: gorge of Niagara River at Devil's Hole (Pease). Ontario: near Niagara Falls (Day, Cat. Niag. Fl.)," Zenkert (1934).

Reported as rare in the Niagara Frontier Region by Zander and Pierce (1979).

Arabis hirsuta (L.) Scop. HAIRY ROCK CRESS. "Niagara Falls," Clinton (1864). "Rare. Near Whirlpool, on either side of Niagara R...," Day (1882). "Near DeVeaux College, and at Lewiston, and on the opposite side of the river," Day (1888). N.Y.: "Niagara Falls and Lewiston," Field Club, 1888. "Lewiston," Field Club, 1889. "Lewiston," Field Club, 1893. "Niagara Gorge, rare," both sides, Field Club, 1894 Ontario, Niagara Park System, Cameron (1895). "DeVeaux College Woods, Suspension Bridge," E. C. Townsend, May 22, 1896, Eckel (1986). Ontario: (as var. adpressipelis) Niagara Glen, T. J. Ivey, June 18, 1907 (6196); Foster's Flats, Wm. Scott, Aug. 2, 1902, 6/88, Heimburger (1955). "Niagara Co.: Gorge of River at Devil's Hole (Zenkert). Ontario: gorge of River at Niagara Glen (Johnson (1923); Zenkert (1931))," Zenkert (1934). ).  "[Niagara] Glen," sight record, Yaki (1970).

 

[No country designated:] Niagara Falls Ex Coll. G. W. Clinton Unknown (BUF). New York: "Rocky hillside, Niagara River."

Marion Jessup Wright June 19, 1897 (BUF); [as var. pycnocarpa (Hopk.) Rollins] Niagara Falls. Ex Herb. Jas. W. Ward [c.1890's] (BUF); "DeVeaux College Woods, Suspension Bridge," E.C.  Townsend, May 22, 1896, (BUF); Niagara Falls, Clinton; Lewiston "river bank" Pease, June 5, 1885 (BUF); Lewiston, Porter, May 21, 1898 (BUF), Devil's Hole, "cool, moist limestone ledges," Zenkert July 18, 1931 (BUF). 

 

Ontario: all Niagara Glen: "rocky woods," Johnson No.480, July 2, 1922 (BUF); "thin soil on limestone," Zenkert, June 20, 1931 (BUF); Hamilton, June, 1942 (NFO).  

[Arabis holboelli Hornem.] HOLBOELL ROCKCRESS. "... in the [Niagara] Glen," Hamilton (1943).

Not listed as a floristic element in the Niagara Frontier Region by Zander and Pierce (1979). Mitchell (1986) does not list this name for the New York State flora, but it occurs in Ontario (Morton & Venn, 1990). Range: Aka-NWT, BC-Ont, PQ. Status: Rare in Ontario, rare in Minnesota, Argus & White (1977). A boreal species with three varieties (Fernald, 1950).

 

 Arabis laevigata (Muhl.) Poir. SMOOTH ROCK CRESS. "... Queenston Heights (Macoun.)" Macoun (1883). ). N.Y.: "Niagara Falls and Lewiston," Field Club, 1888. Ont.: Niagara Glen, Field Club, 1888. "Lewiston," Field Club, 1893.  "Devil's Hole, Queenston Heights, Ontario (Macoun)," Day (1888). Ontario, Niagara Park System, Cameron (1895). Ontario: Niagara Falls, Wm. Scott, June 20, 1898 (6213); Foster's Flats, Wm. Scott, May 24, 1898 (6214), Heimburger (1955). "Ontario: gorge of River at Niagara Glen," Zenkert (1934). "... in the [Niagara] Glen," Hamilton (1943). ).  "[Niagara] Glen," sight record, Yaki (1970). Crest of the Niagara River gorge between Devil's Hole and Whirlpool Steps, with Quercus rubra, Qu. alba, Tilia Americana, Carya glabra, C. ovalis, Eckel (Nov. 7 2004), infrequent at tree bases with Solidago flexicaulis, Thalictrum dioicum, Smilacina racemosa.

 

New York: Lewiston, Pease, July 15, 1884 (BUF); "bed of the old gorge railroad route, lower woods," Eckel 8704043 (BUF); "base of tree, lawns of Whirlpool State Park," Eckel 8705242 (BUF); Whirlpool State park, on the Niagara River,

tree bases near crest, sparse, with Ranunculus abortivus, Viola sororia, Mnium cuspidatum, Anomodon viticulosus. P. M. Eckel s.n. May 7, 2000 (BUF); Second of the Three Sisters Islands, west end, Eckel 8705192 (BUF); Lewiston bluffs overlooking the Niagara River gorge, N end, old growth forest, dappled light, strong wind with Quercus alba, Q. rubra, dry, fine-grained soil, Eckel June 9, 1995 (PME); Lewiston wooded bluffs of the Niagara Escarpment at the Niagara River gorge, overlooking village of Lewiston, woods remnant of native vegetation above spoil area, Carya ovata etc. P. M. Eckel s.n. May 14, 2001 (BUF).

 

Ontario: Queen Victoria Park, Cameron, 1890 (NFO); Niagara Glen, "rocky woods," Johnson, July 2, 1922 (BUF); Whirlpool Ravine "moist woods of Acer saccharum, Liriodendron tulipifera., Betula. Halfway down slope," Eckel 8604087 (BUF).

Arabis lyrata L. LYRE-LEAVED ROCK CRESS. Goat Island, May 17, 1862; June 26, "on top of the bank" [crest] (Clinton Journal). "Rather rare. Niagara Falls...," Day (1882). Ontario: "At the Whirlpool, Niagara Falls (Buchan) ..." Macoun (1883). "Goat Island, The Three Sisters. And along the gorge to Lewiston," Day (1888). ) "Lewiston," Field Club, 1889. "Lewiston," Field Club, 1893. "Niagara Gorge, rare," both sides, Field Club, 1894.  Ontario, Niagara Park System, Cameron (1895). Goat Island, "notable for their abundance and beauty," Day (1901). Ontario: Queenston Heights, Wm. Scott, May 24, 1897 (6244); Foster's Flats, Wm. Scott, May 24, 1898 (6239); T. J. Ivey, June 18, 1907 (6231), Heimburger (1955). "Niagara Co.: ... gorge of Niagara River (1897) (Miss Wright). Ontario: gorge of River at Niagara Glen (Zenkert)," Zenkert (1934).

[No country designated:] Niagara Falls.G.W. Clinton (BUF); Gorge, Niagara River. Marion Jessup Wright June 19, 1897 (BUF); Niagara Falls. [New York?] in a class taught by Emma I. Weber. Antoinette LeBrun 1882 (BUF). New York: Niagara Falls, Robert M. Allen, May 13, 1892 (BUF); First of the Three Sisters Islands, west end, "rather abundant on tops of dolomite boulders with Carex eburnea, Asplenium trichomanes, mosses (Thuidium recognitum, Anomodon spp.)," Eckel 8705279 (BUF).

 

Ontario: Niagara Falls, David F. Day, 1862 (BUF); Niagara Glen, "rich soil on limestone," Zenkert, May 14, 1931 (BUF).

The range of the hirsute Arabis lyrata var. lyrata, includes Ontario: Great Lakes, but is best distributed in the southeast United States (Fernald (1950). Status: Rare in Canada, Argus & White (1977). Arabis lyrata var. kamchatica Fisch. ex DC. in Mitchell (1986) is present in New York State. Fernald (1950) indicates the range of the latter glabrous variety with style short or wanting emphasizes its distribution in the western North America and "locally on the north shore of Lake Superior and in western New York."

 

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