The Flora of the Cayuga Lake Basin 323 



1. O. Claytoni (Michx.) Clarke. (0. brevistylis of Cayuga Fl.) Hairy Sweet 



Cicely. 



Woods and ravines, in gravelly or shaly, neutral or calcareous, soils ; common. 

 Fr. June 20-July. 



E. Que. and N. S. to S. Dak., southw. to N. C, Ala., Mo., and Kans. ; rare or 

 absent on the Coastal Plain. A plant of the rich soils of the interior. 



The stems vary from villous to almost glabrous. 



2. O. longistylis (Torr.) DC. Long-styled Sweet Cicely. 



In situations similar to the preceding, but in deeper, often more alluvial, soils, 

 sometimes in sandy loam ; frequent. Fr. June 20-July. 



Ball Hill, Danby; Inlet Valley, s. of Enfield Creek (D. in C. U. Herb.) ; Butter- 

 milk Falls; Negundo Woods (£>.) ; roadside s. of Brookton; Cascadilla Glen, along 

 Goldwin Smith Walk and on Violet Island ; Forest Home Path ; Renwick slope ; 

 lake shore, two miles n. of Renwick (in C. U. Herb.) ; and elsewhere. 



E. Que. to Sask., southw. to Ala., 111., Iowa, N. Dak., and Colo. ; occurring 

 sparingly on the Coastal Plain. A plant primarily of the rich lands of the interior. 



2a. O. longistylis (Torr.) DC, var. brachycoma Blake. (See Rhodora 25: 110. 

 1923.) 



In situations similar to the preceding ; rare. 



Little Salmon Creek valley, Genoa; w. of Canoga Marshes; thicket on lake shore 

 s. of Union Springs. 



W. Conn, and Pa. to 111. and Kans. 



The var. villicaulis Fernald, with cauline hairs 1-2 mm. long instead of 0.3-0.8 

 mm. long, has not been found in the Cayuga Lake Basin. 



5. Conium L. 

 1, C. maculatum L. Poison Hemlock. 



A weed in damp waste places and by roadsides, in rich gravelly or loamy, more 

 or less calcareous, soils ; frequent. Fr. July-Aug. 



Spencer St., toward Buttermilk Glen; Six Mile Creek, near Ferris Place 

 bridge ; roadside near Renwick ; farmyards, Salmon Creek valley ; and elsewhere. 



Que. to Ont. and Mich., southw. to Del., Pa., and Ind., also in Calif., Mex., and 

 S. A. Naturalized from Eu. 



Very poisonous if eaten. 



6. Cicuta L. 



a. Leaflets lanceolate; fruit 3-3.5 mm. long. 1. C. maculata 



a. Leaflets narrowly linear; fruit 1.5-2 mm. long; upper leaf-axils bulblet-bearing 



in autumn. 2. C. bulbifera 



1. C. maculata L. Water Hemlock. Musquash Root. Beaver Poison. 



Swamps, marshes, and ditches, in mucky or alluvial soil, less commonly in cal- 

 careous regions; common, and generally distributed. Fr. July 20-Sept. 

 N. B. to Man., southw. to Fla. and N. Mex. ; common on the Coastal Plain. 

 Poisonous if eaten. 



2. C. bulbifera L. 



In situations similar to the preceding, usually in shallow water ; frequent, and 

 generally distributed. Fr. Sept.-Oct. 



Newf. to B. C, southw. to Md., Ind., Nebr., and Oreg. ; frequent on the Atlantic 

 Coastal Plain. 



