LENTIBULARIACEAE 285 



22. MELAMPYRUM L. 



1. MelampyrumllneareLam, Narrow-lEaved Cow-wheaT. (Man. 

 p. 845 ; I. F. /. 3340.) In dry woods and thickets, N. S. to B. C, N. C, 

 Ky. and Minn. — Pennsylvania : Pike ; Monroe ; Luzerne ; Schuyi<- 

 KiLiy ; Northampton ; Bucks ; Dei,aware ; Chester ; Lancaster ; 



Huntingdon. 



23. PEDICULARIS L. 



Leaf-blades shallowly pinnatifid or toothed : capsules ovoid, little longer than 

 the calyx. i. P. lanceolata. 



Leaf-blades pinnately ;^rted : capsule linear-lanceolate, thrice as long as the 

 calyx. 2. P. Canadensis. 



1. Pedicularis lanceolata Michx. Swamp Lousewort. (Man. p. 

 843 ; I. F. /. 3334-) In swamps, Ont. to Conn., Va., Man., Minn., Ohio, 

 Mich, and Neb. — Pennsylvania : Monroe ; Bucks ; Delaware ; Ches- 

 ter ; Luzerne; Lancaster; Huntingdon. 



2. Pedicularis Canadensis L. Wood Betony. LouseworT. (Man. 

 p. 844 ; I. F. /. 333S.) In dry woods and thickets, N. S. to Man., Fla., 

 Miss., Colo, and northern Hex. — Pennsylvania : Pike ; Monroe ; 

 Northampton ; Bucks ; Delaware ; Chester ; Lancaster ; Frank- 

 lin ; Huntingdon ; Montgomery ; Somerset ; Crawford ; Erie ; 

 Allegheny. 



Family ii. LENTIBULARIACEAE Lindl. Bladderwort Family. 



1. UTRICULARIA L. 



Scapes erect from rooting bases : leaves simple, entire : bladders few or none. 

 Corolla yellow, over 15 mm. broad. i. (/. cornuta. 



Corolla purple, less than 12 mm. broad. 2. U. resnpinata. 



Scapes emersed, from wholly or partly free-swimming leafy stems : leaf-blades 

 finely divided, bladder-bearing. 

 Flowering stems bearing a whorl of leaves with inflated petioles and dis- 

 sected blades. 3. U. inflala. 

 Flowering stems leafless or merely scaly. 



Stem-leaves whorled. 4. U. purpurea. 



Stem-leaves merely crowded, or remote. 



Leaf-blades 2-3-pinnately divided : leaves crowded. 5. U. vulgaris. 

 Leaf-blades dichotomously divided : leaves scattered. 

 Plants bearing cleistogamous flowers among the leaves. 



6. U. clandeslina. 

 Plants destitute of cleistogamous flowers. 



Bladders borne mainly or wholly on leafless branches. 



7. U. intermedia. 

 Bladders borne among the leaves. 8. U. gibba. 



1. Utricularia cornuta Michx. Horned Bladderwort. (Man. p. 

 846; I. F. /. 3342.) On borders of ponds, or in bogs, Newf. to Ont., 

 Minn., Fla. and Tex. — Pennsylvania : Pike ; Monroe ; Lackawanna ; 

 Erie ; Susquehanna. 



