4 SPARGANIACEAE 



Family 2. TAXACEAE Lindl. Yew Family. 

 1. TAXUS L. 

 1. Taxus Canadensis Marsh. American Yew. Ground Hemlock. 

 (Man. p. 37 ; I. V.f. /Jj)- In rocky woods, Newf. to Man., N. J., Va. 

 and la. — Pennsylvania : Monroe ; Wayne ; Susquehanna ; Bucks ; 

 Lycoming; Centre; Erie; Somerset; Chester, Black Rock; 

 Blair ; Huntingdon ; Tioga. 



Class 2. ANGIOSPERMAE. 



Cotyledon i : stem endogenous. Subclass i. Monocotyledones. 



Cotyledons normally 2 : stem exogenous, with rare exceptions. 



Subclass 2. Dicotyledones. 



Subclass 1. MONOCOTYLEDONES. 



Order 1. PANDANALES. 



Flowers in elongated spikes : perianth of bristles : gynoecium stalked. 



Fam. I. Typhaceae. 

 Flowers in globose spikes : perianth of scales : gynoecium sessile. 



Fam. 2. Sparc aniaceae. 



Family i. TYPHACEAE J. St. Hil. Cat-tail Family. 



1. TYPHA L. 

 Spikes with the pistillate and staminate portions contiguous ; pistillate with- 

 out bracklets : stigmas club-shaped or rhomboidal : pollen-grains in 4's. 



I. T. latifolia. 

 Spikes with the pistillate and staminate portions separated ; pistillate with 

 bractlets : stigmas linear : pollen-grains simple. 2. T. angustifolia. 



1. Typha latifolia L. Broad-leaved Cat-tail. (Man. p. 39 ; I. F. 

 f. 136.) In marshes, throughout N. A., except the extreme north. Also 

 in Eu. and Asia. — Pennsylvania : Monroe ; Northampton ; Bucks ; 

 Lehigh; Delaware; Chester ; Lancaster ; Dauphin ; Franklin ; 

 Allegheny. Common throughout. 



2. Typha angustifolia L. Narrow-leaved Cat-tail. (Man. p. 39; 

 L F.y". 137.) In marshes, mainly along the coast, N. S. to Fla. Also in 

 Eu. and Asia. — Pemisylvania : Northampton ; Bucks ; Chester ; 

 Philadelphia ; Lehigh ; Delaware. 



Family 2. SPARGANIACEAE Agardh. Bur-reed Family. 

 1. SPARGANIUM L. 



Fruit sessile, obovoid or cuneate. i. S. eurycarpum. 



Fruit stipitate, fusiform or oblong. 



Inflorescence branching and compound. 2. 5. androcladum. 



Inflorescence simple, or the lower spikes merely peduncled. 



A. Pistillate spikes or some of the lower ones peduncled : upper leaves 

 with sac-like bases and scarious margins. 3. 5'. Ameri'canum. 



