The Flora of the Cayuga Lake Basin 295 



82. BALSAMINACEAE (Touch-me-not Family) 



1. Impatiens (Riv.) L. 



a. Flowers pale yellow, sparingly dotted ; sac broader than long. 1. I. pallida 



a. Flowers orange, thickly spotted with reddish brown ; sac longer than broad ; 



spur more incurved. 2. /. biflora 



1. I. pallida Nutt. Pale Touch-me-not. Jewel weed. 



Shaded rough banks and rills, and in moist woods, in rich damp gravelly or 

 shaly calcareous soils ; common. July-Aug. 



Frequent in most of the ravines of the basin ; "especially abundant in the vicinity 

 of Woodwardia Swamp [!] and Mud Cr. [!], where a form having flowers of 

 a pale pink with pink spots is found" (D.). A white-flowered form occurs fre- 

 quently about Ithaca. 



N. Me. and w. N. E. to Sask., southw. to Ga. and Kans. ; rare on the Coastal 

 Plain and in granitic N. E. 



2. I. biflora Walt. (/. fulva of Cayuga Fl.) Spotted Touch-me-not. 



Open moist or wet situations ; more abundant than the preceding. July-Aug. 



Newf. to Sask., southw. to Fla. and Nebr. More tolerant of acid soils, and 

 more frequent on the Coastal Plain, than the preceding species. 



Plants with salmon-pink corolla and deeper spots are occasional (forma Peasei 

 A. H. Moore, Rhodora 19: 116. 1917). 



83. RHAMNACEAE (Buckthorn Family) 



a. Ovary free from the disk; fruit fleshy; flowers axillary, greenish. 1. Rhamnus 

 a. Ovary adnate at base to the disk ; fruit dry ; flowers mostly in terminal, pani- 

 culate, or corymbose umbels, white. 2. Ceanothus 



1. Rhamnus (Tourn.) L. 



a. Flowers 5-merous; petals 0; leaves acute, with 4-5 pairs of veins. 



1. R. alnifolia 

 a. Flowers 4-merous ; petals present ; leaves blunt or apiculate, with 2-3 pairs of 

 veins arising below the middle. 2. R. cathartica 



1. R. alnifolia L'Her. Swamp Buckthorn. 



Boggy and springy meadows, mostly near marl springs; frequent. May 15-June 5. 



Headwaters Swamp ; near Key Hill ; the narrows between Slaterville and Caro- 

 line Center; Larch Meadow (D. !) ; Fleming Meadow (D.) ; Indian Spring marsh, 

 formerly (D.) ; Mud Creek, Freeville; Mud Pond, McLean Bogs; Cortland marl 

 ponds ; Junius ; Black Brook, Tyre ; e. of Clyde ; Miller Bog, Spring Lake ; and 

 elsewhere. 



Newf. to B. C, southw. to n. N. J., Pa., 111., Nebr., Wyo., and Calif. ; rare or 

 absent on the Atlantic Coastal Plain. 



2. R. CATHARTICA L. COMMON BUCKTHORN. 



Gravelly roadsides, banks, and hillside pastures, in acid or calcareous regions ; 

 frequent. May 15-June 15. 



Escaped from cultivation, and naturalized: n. of Summit Marsh; n. of Beebe 

 Lake; Renwick woods (D.\) ; between Etna and Ringwood; n. of Freeville (D. in 

 C. U. Herb.); w. of Woodwardia Bog; open pasture, lower Beaver Brook; near 

 Esty Glen; Salmon Creek valley; Levanna (D. in C. U. Herb.); rather com- 

 mon about Union Springs ; Junius ; and elsewhere. 



Native of Eurasia. 



