The Flora of the Cayuga Lake Basin 79 



Various places throughout the city of Ithaca, on C. U. campus, in Forest Home, 

 and on Cayuga Heights ; also Genoa ; and elsewhere. 



Me. to Minn., southw. to Fla. and Tex., including the Coastal Plain. 



2. M. sobolifera (Muhl.) Trin. 



Dry rocky places, especially in the ravines, in more or less calcareous soils ; 

 infrequent. Aug.-Sept. 15. 



Fall Creek, near Ithaca Falls (D.\) ; Taughannock Gorge, below the falls; near 

 Ludlowville (D.) ; "chiefly on the lake-shore declivities, where it grows in beds" 

 (D.). 



N. H. to Minn., southw. to Va., Tenn., and Okla. ; probably absent on the Coastal 

 Plain. 



3. M. tenuiflora (Willd.) BSP. (M. Willdenovii of Cayuga FU 



Dry, rocky, thinly wooded slopes and gravelly hillsides, in less calcareous soils than 

 the preceding ; infrequent. Aug. 



Thatcher Pinnacles; Enfield Glen; Six Mile Creek, at the Narrows (£>.!) ; 

 Beebe Lake; Paine Creek; Union Springs; and elsewhere. 



Mass. to Minn., southw. to Ala. and Tex. ; rare on the Coastal Plain. 



4. M. sylvatica Torr. 



Damp or rarely dry calcareous cliffs and ledges, more rarely in marl meadows ; 

 scarce. Aug. 15-Sept. 



Buttermilk Glen; Six Mile Creek; Cascadilla Glen, near the Old Armory; Salmon 

 Creek ravine, s. of Genoa ; Big Gully ; Westbury Prairie ; swamp n. of Crusoe Lake. 



N. B: to S. Dak., southw. to N. C. and Okla. ; rare on the Coastal Plain. 



5. M. foliosa Trin. (M. mexicana, var. filiformis, of Cayuga Fl.) 



Damp thickets, in gravelly or stony, more or less calcareous, soils, occasionally in 

 marl meadows ; common. July 25-Sept. 



Me. to S. Dak., southw. to Va., 111., Okla., and Ariz. ; rare or absent on the 

 Coastal Plain. 



The awned form, forma ambigna (Torr.) Wiegand (see Rhodora 26:1. 1924), 

 occurs in Fall Creek in water under the sluiceway near Triphammer Falls (F, P. Met- 

 calf). 



6. M. mexicana (L.) Trin. 



Damp shady roadsides and borders of thickets, in rich gravelly soils; frequent. 

 Aug.-Sept. 



Six Mile Creek ; Cascadilla Glen ; Fall Creek Gorge ; Renwick ; and elsewhere. 



N. B. to S. Dak. and Wyo., southw. to N. C. and Tex. ; perhaps less frequent on 

 the Coastal Plain. 



The awned form, forma commutata (Scribn.) Wiegand (see Rhodora 26: 1. 1924), 

 has been found at Renwick and near Indian Spring (D.), at "Ithaca" (H. P. 

 DeForest), at Cayuga, and at Junius. 



7. M. racemosa (Michx.) BSP. (M. glomcrata of Cayuga Fl.) 



Damp limy rocks, gravels, and marl meadows, rarely on dry rocks and in dry 

 woods; frequent. July 25-Sept. 15. 



Dry woods and cliffs, Thatcher Pinnacles (D.) ; Caroline Pinnacles (D.) ; wet 

 shore of Spencer Lake; Larch Meadow (D.) ; Buttermilk Glen (D.) ; Mallory- 

 ville Bog; McLean Bogs; wet cliffs, Salmon Creek; Spring Lake; Crusoe Prairie; 

 and elsewhere (D.). 



Newf . to B. C, southw. to n. N. J., Md., N. C, and N. Mex. ; absent or rare on 

 the Atlantic Coastal Plain. 



