The Flora of the Cayuga Lake Basin 311 



90. THYMELAEACEAE (Mezereum Family) 



a. Calyx lobes almost wanting ; stamens and style exserted ; flowers pale yellow. 



1. DlRCA 

 a. Calyx lobes prominent, spreading; stamens and style included; flowers purple. 



2. Daphne 

 1. Dirca L. 



1. D. palustris L. Leather-Wood. 



Damp or rich woods, in gravelly calcareous soils ; frequent. Apr. 20-May 10. 



N. of Cayuta Lake (D.) ; s. w. of Key Hill; Enfield Glen; Lick Brook ravine; 

 s. e. of Brookton; Ellis Hollow; Six Mile Creek (D. !) ; Cascadilla Creek (£>.); 

 Beebe Lake; Dryden-Lansing Swamp (D.) ; Ringwood ; woods, McLean Bogs 

 (D.I) ; swamps of Groton (£>.) ; Big Gully; and elsewhere. 



N. B. to Ont. and Minn., southw. to Fla., Tenn., and Mo. ; rare or absent on the 

 Coastal Plain. 



2. Daphne L. 

 1. D. mezereum L. Mezereum. 



Dry roadsides and stream banks, in rich gravelly calcareous soils ; an occasional 

 escape froni cultivation. Apr-May 10. 



Inlet Valley, s. of Buttermilk Glen; Brookton, just s. e. of village; e. shore of 

 Cayuta Lake, 1885 (F. V. Coville) ; Enfield Creek, above the ravine; road from 

 Trumansburg to Taughannock, 1884 (A. L. Coville) and 1922; Ludlowville, just s. 

 of village; hillside near Groton, 1886 (D.) ; Genoa; Venice. 



N. S. and Ont., southw. to Mass. and N. Y. Native of Eurasia. 



91. ELAEAGNACEAE (Oleaster Family) 



1. Shepherdia Nutt. 

 1. S. canadensis (L.) Nutt. Shepherdia. 



Dry exposed cliffs and rocky slopes, in calcareous soils ; frequent. May. 



In the Cayuga Lake Basin, found only in the valley of Cayuga Lake : lower Six 

 Mile Creek (D. !) ; Cascadilla Creek (D.) ; Fall Creek, below Mirror and Ithaca 

 Falls (DA); Taughannock Gorge, n. side of upper glen; frequent along the cliffs 

 from Esty to Willets. 



Newf. to Alaska and B. C, southw. to N. S., Me., Vt., n. and w. N. Y., Mich., 

 and in the Rocky Mts. to N. Mex. 



92. LYTHRACEAE (Loosestrife Family) 



a. Flowers regular ; petals equal ; calyx not gibbous. 



b. Calyx campanulate, short ; leaves often whorled ; stems long, recurving ; petals 



4-5. 1. Decodon 



b. Calyx tubular ; leaves never whorled ; stems not recurving ; petals 5-7. 



2. Lythrum 

 a. Flowers irregular ; petals unequal ; calyx gibbous. 3. Cuphea 



1. Decodon Gmel. 



a. Leaves and stems more or less tomentose-pubescent. 1. D. verticillatus 



a. Leaves and stems glabrous. la. D. v., var. laevigatus 



1. D. verticillatus (L) Ell. (See Rhodora 19:154. 1917. D. v., var. pubescens 

 T. & G. Nesea verticillata, in part, of Cayuga Fl.) Water Willow. Swamp 

 Loosestrife. 



In shallow water of pond shores and stream banks, in calcareous or slightly saline 

 locations ; apparently rare. Aug. 



