HYDRANGEACEAE 161 



b. Hypanthium campanulate : stamens about twice as longf as the petals. 



3. H. roseola. 



1. Heuchera Americana L,. AIvUM-rooT. (Man. p. 482 ; I. F. f. 

 1845.') In dry or rocky woods, Ont. to Conn., Minn., Ala. and La. — 

 Pennsylvania : Monroe ; Northampton ; Bucks ; Chester ; Lancas- 

 ter ; Franklin ; Allegheny ; Huntingdon ; Delaware- 



2. Heuchera pubescens Pursh. Downy Heuchera. (Man. p. 

 481 ; I. F. f. iS^6.) In rich woods, mountains of Pa. to Kans. and N. 

 C. — Pennsylvania: Lancaster; Perry; Union; Franklin; Hunt- 

 ingdon ; Fayette. 



3. Heuchera roseola Rydb. Pink Heuchera. (Man. p. 481.) lu 

 woods, Pa. and Va. — Pennsylvania : York, York Furnace. 



4. MITELLA L. 

 Scape bearing 2 opposite bracts : basal leaves with ovate blades. 



I. M. diphylla. 

 Scape bearing one bract or this obsolete : basal leaves with reniform or orbicu- 

 lar blades. 2. M. nuda. 



1. Mltella diphylla L. Two-leaved Bishop's Cap or MitreworT. 

 (Man. p. 483 ; I. F. f. 1848.) In rich woods, Quebec to Minn., N. C. 

 and Mo. — Pennsylvania : Monroe ; Northampton ; Bucks ; Pike ; 

 Chester ; Lancaster ; York ; Tioga ; Franklin ; Lackawanna ; 

 Somerset ; Erie ; Delaware ; Allegheny. 



2. Mitella nuda L. Naked Bishop's Cap or MiTrewort. (Man. 

 p. 483 ; I. v./. iS4g.) In cold woods and peat bogs, Newf. and Lab. to 

 the Pacific coast, Pa., Mich., and in the Canadian Rocky Mts. — Pennsyl- 

 vania : Wayne ; Monroe, Tobyhanna Mills. 



5. CHRYSOSPLENIUM L- 

 1. Chrysosplenlum Americanum Scbw. Golden Saxifrage. 

 Water Carpet. (Man. p. 483 ; I. F. /. iS^o.) In wet, shaded places, 

 N. S. to Saskatchewan, along the mountains to Ga. and to Ohio and 

 Minn. — Pennsylvania : Pike ; Northampton ; Bucks ; Chester ; Lan- 

 caster ; York; Franklin; Centre; Delaware; Allegheny. 



Family 6. HYDRANGEACEAE Dumort. Hydrangea Family. 



Stamens 8-12. i. Hydrangea. 



Stamens 20-40. 2. Philadelphus. 



1. HYDRANGEA L. 



1. Hydrangea arborescens L. Wild Hydrangea. (Man. p. 484; I. 

 F. y. i8jS. ) On rocky stream or river banks, N. Y. to Iowa, Fla. and 

 Mo. — Pennsylvania : Northampton ; Bucks ; Philadelphia ; Ches- 

 ter ; Lancaster ; York ; Perry ; Tioga ; Luzerne ; Somerset ; 

 Allegheny. 



2. PHILADELPHUS L. 



1. Philadelphus inodorus L- Scentless Syringa. (Man. p. 485 ; 

 I. F.y. 1861.) In thickets, Va. to Ala. andGa., principally in the moun- 

 11 



