lla. Leaves dotted beneath with resinous glands 



Black Currant, Kibes hudsonianum. 



lib. Leaves glabrous or pubescent beneath, without resinous glands 



Ked Currant, Kibes triste. 



12a. Flowers minute, yellowish, without petals, in the axils of 

 the leaves (1 2 dm. high; flowers in spring) 



Golden Saxifrage, Chrysosplenium amcricanum. 

 12b. Flowers large, solitary, terminating erect stalks (leaves 

 mostly basal; flowers white, in late -summer; flower-stalks 1 5 

 dm. high) (Grass-of-Parnassus) 13. 

 12c. Flowers in terminal racemes, panicles, or clusters 15. 



13a. Flowers less than 2 cm. wide; leaves narrowed to the base 



Grass-of-Parnassus, Parnassia parviflora, 



13b. Flowers 2 3.5 cm. wide; leaves rounded or cordate at the 

 base 14. 



14a. A 3-cleft scale at the base of each petal 



Grass-of-Parnassus, Parnassia caroliniana, 



14b. A many-cleft (9 15) scale at the base of each petal 



Grass-of-Parnassus, Parnassia palnstris. 



15a. Leaves linear to oblanceolate, 3 times as long as broad, or more, 



and pinnately veined (Saxifrage) 16. 

 15b. Leaves broadly ovate to nearly circular, frequently cordate at 



the base, and always palmately veined or lobed - 20. 



16a. Leaves basal; the flower-stalk bearing no leaves except 

 small ones at the base of its branches 17. 



16b. Flower-stalk leafy below (1 3 dm. high; flowers yellow, 

 summer) 18. 



17a. Petals white; sepals erect; leaves conspicuously toothed, 3 10 

 cm. long (1 3 dm. high; spring) 



Saxifrage, Saxifraga Tirginiensis. 



17b. Petals greenish; sepals reflexed; leaves minutely toothed or en- 

 tire, 10 30 cm. long (5 10 dm. high; -spring) 



Saxifrage, Saxifraga pennsylvanica. 

 18a. Leaves with 3 sharp teeth at the apex 



Saxifrage, Saxifraga tricuspidata. 

 18b. Leaves with numerous teeth or entire 19. 



19a. Leaves linear, chiefly on the stem Saxifrage, Saxifraga aizoides. 

 19b. Leaves spatulate, chiefly in a basal rosette 



Saxifrage, Saxifraga aizoon. 



20a. Stamens 5 (leaves mostly basal; flowers greenish or pur- 

 plish in late spring, on stalks 5 10 dm. high) (Alum Root) 21. 

 20b. Stamens 10 (flowers white, in spring) 23. 



2 la. Flowers regular Alum Koot, Heuchera americana, 



21b. Flowers irregular, the calyx oblique, longer on the upper side 

 than on the lower 22. 



