DROSERACEAE. [Vol.. II. 



3. Drosera longifolia L/. Oblong-leaved 

 Sundew. (Fig. 1805.) 



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



Drosera Anglica Huds. Fl. Angl. Ed. 2, 135. 1778. 



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

 erect, longer (8 // -i5 // long, i^ // -2 // wide), elongated- 

 spatulate and narrowed into a glabrous petiole \'-\ f 

 long; pedicels W-$ f/ long; flowers several, racemose, 

 white, 2 // -2j4 // broad; seeds oblong, obtuse at both 

 ends, the testa loose. 



In bogs, Newfoundland and arctic America to Manitoba 

 and British Columbia, south to Ontario and California. Also- 

 in northern Kurope and Asia. Summer. 



4. Drosera linearis Goldie. Slender-leaved 

 Sundew. (Fig. 1806.) 



Drosera linearis Goldie, Kdinb. Phil. Journ. 6: 325. 1822. 



Scape low but sometimes exceeding the leaves, glabrous. 

 Petioles erect, glabrous, 2 / -4 / long; blade linear, i'-3' long, 

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

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

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

 and somewhat shining. 



In bogs, shores of Lake Superior and Lake Huron, west to 

 the Canadian Rocky Mountains. Blooms a little later than /'. 

 rotund if olia when the two grow together. 



5. Drosera filiformis Raf. Thread-leaved 

 Sundew. (Fig. 1807.) 



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

 Drosera tenuifolia Willd. Knum. 340. 1809. 



Scape erect, glabrous, 8'- 20' high. Leaves narrowly lin- 

 ear or filiform, glandular-pubescent throughout, 6 / -i5 / long, 

 about i" 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-3o-flowered; pedicels 2 // - 

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

 much exceeding the sepals; seeds fusiform, acute at each 

 end, the testa minutely punctate. 



In wet sand, near the coast, eastern Massachusetts to Florida. 

 July-Sept. 



