204 



DROSERACEAE. 



Vol. II. 



3. Drosera longifolia L. Oblong-leaved Sun- 

 dew. I'ig. 2127. 



Drosera longifolia L. Sp. PI. 282. 1753. 



Drosera aiiglica Ihuls. V\. Angl. Ed. 2, 135. 1778. 



Similar lo the preceding species, but the leaf-blade is 

 erect, longer (8"-i5" long, ll"-2" wide), clongated- 

 spatulate and narrowed into a glabrous or sparingly 

 hairy petiole 1-4' long; pedicels J"-3" long; flowers 

 usually several, racemose, white, 2"-2Y' broad, rarely 

 only one ; seeds oblong, obtuse at both ends, the testa 

 loose. 



Tn bogs. Newfoundland and arctic .A.merica to Manitoba 

 and British Columbia, Ontario, Michigan, Idaho and Cali- 

 fornia. Also in northern Europe and Asia. Summer. 



4. Drosera linearis Goldie. Slender-leaved Sundew. 

 Fig. 2128. 



Drosera linearis Goldie, Edinb. Phil. Journ. 6: 325. 1S22. 



Scape low but sometirnes exceeding the leaves, glabrous. 

 Petioles erect, glabrous, 2'-^' long; blade linear, I'-i' long, 

 about l" wide, densely clothed with glandular hairs, obtuse 

 at the apex; flowers few, or solitary, white; petals somewhat 

 exceeding the sepals; seeds oblong, black, the testa close, 

 smooth and somewhat shining. 



In bogs, Quebec to Ontario, Alberta, Maine, Wisconsin and 

 Minnesota. Blooms a little later than D. rolundifolia when the 

 two grow together. 



5. Drosera filiformis Raf. Thread-leaved Sundew. Fig. 2129. 



Drosera filiformis Raf. Med. Rep. (II.) 5: 360. 1808. 



Drosera lenuifolia Willd. Enum. 340. i8og. 



Scape erect, glabrous, 8'-2o' high. Leaves narrowdy lin- 

 ear or filiform, glandtilar-pubescent throughout, 6'-i5' long, 

 about 1" wide, usually acutish at the apex, with no distinc- 

 tion between blade and petiole, woolly with brown hairs at 

 the very base; racemes i-sided, io-30-flowered ; pedicels 

 2"-4" long; flowers purple, 4"-i2" broad; petals obovate, 

 .f much exceeding the sepals; seeds fusiform, acute at each 

 end, the testa minutely pimctate. 



In wet sand near the coast, eastern Massachusetts to Flor- 

 ida and Mississippi. Tulv-Sept. Eariest leaves short, lanceo- 

 late, acute, the apex glandular. A hybrid with D. wtcrmcdia 

 is described. 



Drosera brevifolia Pursh, a species of the southeastern 

 United States, with cuneate-obovate leaves and glandular- 

 pubescent scapes, enters our territory in extreme southeastern 

 Virginia. 



