The Flora of the Cayuga Lake Basin 305 



g. Sepals with appressed, subentire auricles ; capsules on prostrate 

 peduncles; seeds brown, 1.9-2.1 mm. long. 

 h. Leaves broadly flat-reniform to ovate, lobed or parted, or more 

 rarely unlobed and shallowly toothed, scarcely bullate, bluish 

 green ; petioles slender, densely villous to the base ; capsules 

 oval, 7-12 mm. long. 

 i. Leaves ovate. 5. V . palmata 



i. Leaves subreniform, abruptly acute. 5a. V. palmata, 



var. dilatata 

 h. Leaves round-reniform-cordate, unlobed, with more rounded, 

 fuller, and less distant teeth than in no. 5, bullate, bright green ; 

 petioles tall and stout, villous above, rarely glabrous, less vil- 

 lous or glabrate at base; capsules oblong-oval, 8-14 mm. long. 



6. V. sororia 

 d. Leaves ovate-oblong, truncate or subcordate at base, blunt at apex, short- 

 petioled, hairy. 7. V. sagittata, 



var. ovata 

 c. Cleistogamous flowers several, on short, nearly leafless runners simulating a 

 raceme; leaves large, oval-oblong, obtuse, thick or waxy, dull, low-crenate, 

 prostrate; capsules 6-8 mm. long, purple-flecked; seeds mostly white (?). 



8. V . rotundifolia 

 b. Rootstocks slender, rarely wanting, 2-4 mm. in diam. near the summit, 1-1.5 

 mm. in diam. farther back, often rather long and creeping; plant with or 

 rarely without runners either above or below ground. 

 c. Runners nearly filiform, subterranean, superficial, or rarely wanting, leafless 

 or with reduced leaves ; capsules glabrous ; auricles of the sepals sub- 

 appressed. 

 d. Basal sinus of leaf deep, the lobes converging and often overlapping, the 

 blade thin, coarsely and flatly crenate; (leaves sparsely setose above, 

 glabrous below; capsule usually purple-flecked; seeds 1.2-2 mm. long, pale 

 buff). 9. V. Selkirkii 



d. Basal sinus of leaf open, the blade thicker, less coarsely crenate. 



e. Capsules ellipsoidal, green ; seeds ovoid, acute at base, 1 mm. long, black ; 

 leaves glabrous, generally obtuse and rounded; (runners often bearing 

 flowers and reduced leaves). 10. V. pallens 



e. Capsules ovoid, usually purplish; seeds larger; leaves with at least a 

 few hairs, apiculate or obtuse. 

 /. Runners filiform, flowerless ; leaves dull, apiculate ; pubescence fine. 

 g. Leaf blades slightly fleshy, glabrous except for a few hairs above; 

 petioles usually reddish, spreading ; runners usually with leaves ; 

 seeds ovoid, acute at base, 1.2-1.6 mm. long, black. 



11. V. blanda 

 g. Leaf blades thinner, more veiny ; petioles not reddish, more erect ; 

 runners usually nearly or quite leafless ; seeds oblong, blunt at 

 base, 1.6-1.9 mm. long, brown. 

 h. Leaves hairy below and on the petioles. 12. V. incognita 



h. Leaves hairy above, glabrous below and on the petioles. 



12a. V. incognita, 



var. Forbesii 

 f. Runners short, raceme-like, flower-bearing, sometimes wanting ; leaves 

 rounded, pointless, waxy-glossy, glabrous at least above ; pubescence, 

 if present, coarse; seeds as in the last preceding species. 



13. V. rcnifolia, 



var. Brainerdii 

 c. Runners long and coarse, above ground, leafy ; capsules pubescent ; auricles 

 of the sepals usually spreading; (leaves obtuse, finely crenate, usually vel- 

 vety on both surfaces; seeds large, pale). 14. V. odorata 



