2. Drosera IntermŔdia Hayne. Spatulate-Leaved Sundew

Fig. 2126

Drosera intermedia Hayne in Schrad. Journ. Bot. 1800: Part 1, 37.

Drosera longifolia Michx. Fl. Bor. Am. 1: 186. 1803. Not L. 1753.

Drosera americana Willd. Enum. 340. 1809.

Drosera intermedia var. Americana DC. Prodr. 1: 318. 1824.

Rootstock elongated (2'-4' long when growing in water). Scape erect, glabrous, 2'-8' high. Blades of the leaves ascending, spatulate, obtuse at the apex, 3"-7" long, 1 1/2"-2" wide, their upper surfaces clothed with glandular hairs, gradually narrowed into a glabrous petiole 1/2'-1 1/2' long; raceme 1-sided; flowers several; pedicels about 1 1/2" long; petals white, slightly exceeding the sepals; seeds oblong, the testa close, roughened.

In bogs, Newfoundland to Saskatchewan, south to Florida and Louisiana. Also in Cuba, and in northern Europe. June-Aug.

2 Drosera Interm Dia Hayne Spatulate Leaved Sundew 469

3. Drosera Longif˛lia L. Oblong-Leaved Sundew

Fig. 2127

Drosera longifolia L. Sp. Pl. 282. 1753.

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

Similar to the preceding species, but the leaf-blade is erect, longer (8"-15" long, 1 1/2"-2" wide), elongated-spatulate and narrowed into a glabrous or sparingly hairy petiole 1'-4' long; pedicels 1/2"-3" long; flowers usually several, racemose, white, 2"-2i" broad, rarely only one; seeds oblong, obtuse at both ends, the testa loose.

In bogs, Newfoundland and arctic America to Manitoba and British Columbia, Ontario, Michigan, Idaho and California. Also in northern Europe and Asia. Summer.

4. Drosera LineÓris Goldie. Slender-Leaved Sundew

Fig. 2128

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

Scape low but sometimes exceeding the leaves, glabrous. Petioles erect, glabrous, 2'-4' long; blade linear, ą-3' long, about 1" 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. rotundifolia when the two grow together.

4 Drosera Line Ris Goldie Slender Leaved Sundew 470

5. Drosera Filifˇrmis Raf. Thread-Leaved Sundew

Fig. 2129

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

Drosera tenuifolia Willd. Enum. 340. 1809.

Scape erect, glabrous, 8'-2o' high. Leaves narrowly linear or filiform, glandular-pubescent throughout, 6'-15' long, about 1" wide, usually acutish at the apex, with no distinction between blade and petiole, woolly with brown hairs at the very base; racemes 1-sided, 10-30-flowered; pedicels 2"-4" long; flowers purple, 4"-12" 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 and Mississippi. July-Sept. Eariest leaves short, lanceolate, acute, the apex glandular. A hybrid with D. intermedia is described.

Drosera brevif˛lia Pursh, a species of the southeastern United States, with cuneate-obovate leaves and glandular-pubescent scapes, enters our territory in extreme southeastern Virginia.

5 Drosera Filif Rmis Raf Thread Leaved Sundew 471