80 MELANTHACEAE 



Northampton ; Delaware ; Lancaster ; Franklin ; Huntingdon ; 

 Erie. 



20a. J. Canadensis subcaudatrus Engelm. (Man. p. 252.) North- 

 ampton ; Bucks ; Huntingdon ; Allegheny. 



20b. J. Canadensis brevicaudatus Engelm. (Man. p. 252 ) Lan- 

 caster; Monroe; Lackawanna; Schuylkill; Carbon; Erie. 



21. Juncus acuminatus Michx. Sharp-fruited Rush. (Man. p. 

 252 ; I. F.y". 956.) Me. to Minn., Ga. and Mex. Also on the northwest 

 coast. — Pennsylvania: Northampton; Philadelphia; Chester; 

 Monroe ; Delaware ; Luzerne ; Huntingdon ; Erie ; Jefferson ; 

 Lancaster ; Bucks ; Franklin ; Pike ; Allegheny. 



21a. J. acuminatus debilis (A. Gray) Engelm. (Man. p. 252.) Lan- 

 caster. 



2. JUNCOIDES Adans. 



Peduncles terminated by i or rarely 2 flowers : capsule of an ovoid type. 



1 . J. pilosum. 

 Peduncles terminated by compact spikes : capsule of an obovoid t5'pe. 



2. J. campestris. 



1. Juncoides pUosiun (L. ) Kuntze. Hairy Wood-rush. (Man. p. 

 253; I. F. /. 9S9-) N. B. to Alaska, N. Y., Mich, and Ore., and in the 

 AUeghenies to Ga. — Pennsylvania : Lancaster ; Monroe ; Sulli- 

 van ; Mercer ; Susquehanna ; Erie ; Somerset. 



2. Juncoides campestris (L.) Kuntze. Common Wood-rush. (Man. 

 p. 254; I. F./l 96^.) In woodlands, throughout U. S. and Br. Am. Also 

 in Eu. and Asia. — Pennsylvania : Northampton ; Monroe ; Dela- 

 ware ; Lancaster ; Franklin ; Allegheny ; Venango ; Somer- 

 set ; Chester. 



Family 2. MELANTHACEAE R. Br. Bunch-flower Family. 



Anthers oblong or ovoid, 2-celled. i. Chamaelirium. 



Anthers cordate or reniform, sometimes becoming peltate, confluently i-celled. 

 Sepals and petals glandless. 

 Inflorescence racemose or spicate : flowers perfect. 2. Chrosperma. 

 Inflorescence paniculate : flowers polygamous. 

 Ovary wholly superior : hypanthium scarcely developed : sepals and 



petals obtuse. 3. Veratrum. 



Ovary inferior at the base : hypanthium manifestlj' developed : sepals 

 and petals acuminate. 4. Stenanthium. 



Sepals and petals with glands at or near the base. 5. Melanthium. 



1. CHAMAELIRIUM Willd. 

 1. Chamaelirium luteum (L. ) A. Gray. Blazing-STar. (Man. p. 

 257 ; I. F. f. 972.) In moist meadows and thickets, Mass. to Mich., Fla. 

 and kxV.— Pennsylvania : Northampton ; Lancaster ; Huntingdon ; 

 Delaware ; Allegheny. 



2. CHROSPERMA Raf. 

 1. Chrosperma muscaetoxicum (Walt.) Kuntze. Fly-poison. (Man. 

 p. 257; I. F. f. 973.) In dry sandy woods, L. I- and Pa. to Fla. and 



