Jones: Flora of Illinois, 77. Saxifragaceae 145 



3. Petals pink; leaves oval, dentate or entire, alternate 2-5 cm. long; cliffs, 



not common; chiefly in s. 111. Aug.-Sept S. telephioides Michx. 



2. Penthorum 

 P. sedoides L. Ditch Stonecrop. Wet ground, common, July-Sept. 



76. Parnassiaceae Dum. — Grass- of- Parnassus Family 



1. Parnassia L. — Grass-of-Parnassus 



P. glauca Raf. Wet ground in the n. half of the state, rare. July-Sept. [P. 

 caroliniana of auth., not Michx.} 



77. Saxifragaceae Dum. — Saxifrage Family 



1 . Ovary-) -loculed ; placentae parietal or nearly basal. 

 2. Petals 5; stamens 5. 



3. Petals entire; inflorescence paniculate; leaves all basal 1. Heuchera 



3. Petals fringed; inflorescence racemose; stem with a pair of opposite, sessile leaves 



2. Milella 



2. Petals 0; stamens 10 or 8; flowers sessile, axillary, usually solitary 



3. Chr^sosplenium 



1. Ovary 2-loculed; placentae axial. 



4. Stamens 5; seeds wing-margined 4. SulUvanlia 



4. Stamens 10; seeds wingless 5. Saxifraga 



1. Heuchera L. — Alumroot 



1. Calyx m anthesis 6-8 mm. long, decidedly oblique; river banks, cliffs, or dry 

 woods, not uncommon, extending southw. to Macoupin and Effingham 

 counties. May-June. [H. cdiata Rydb.; H. richardsonii var. grayana 

 Rosend., Butters, & Lakela] H. hispida Pursh 



1. Calyx in anthesis 2-5 mm. long. 



2. Calyx in anthesis 2-2.5 mm. long, nearly regular; petals white; shaded 



cliffs, s. 111. July-Sept. [H. rugelii Shuttlw.} H. parviflora Bartl. 



2. Calyx in anthesis 4-5 mm. long, oblique; petals greenish or purplish; bluffs 



and rocky banks, not common. May-June 



H. hirsuticaulis (Wheelock) Rydb. 



2. MiTELLA L. — Miterwort 



M. diphylla L. Bishop's-cap. Wooded ravines, not common; chiefly in the 

 n. half of the state. May. 



3. Chrysosplenium L. — Golden Saxifrage 

 C. amerkanum Schw. Wet ground, n. III., rare. May-June. 



4. Sullivantia T. & G. 



S. renifolia Rosend. Cliffs, rare. Jo Daviess, Carroll, and Ogl'e counties. 

 June-July. 



5. Saxifraga L. — Saxifrage 



(Micranthes Haw.) 

 1. Sepals becoming reflexed; plants 30-90 cm. tall; leaves 10-30 cm. long, 

 entire or nearly so. 



