ROSALES. 47 * 



as many, or fimbriate. Capsule 3-valved (rarely 5-valved), many-seeded, generally 



stipkate in the calyx. [Name from the Greek, dew.] About no species, most 



abundant in Australia. Besides the following, 2 others occur in the southeastern 

 States. 



Blade of the leaf orbicular, or wider than long; petals white. 1. D. rotundijolia. 



Blade of the leaf linear, or longer than wide. 



Leaves linear or spatulate with a distinct petiole ; petals white. 

 Blade of the leaf spatulate. 



Blade 2-3 times as long as wide. 2. D, intermedia. 



Blade 6-8 times as long as wide. 3. D. longi/olia. 



Blade linear, 10-15 times as long as wide. 4- D* linearis. 



Leaves filiform, much elongated, with no distinct petiole; petals purple. 



5. D. filiformis. 



i. Drosera rotundifolia L. Round-leaved Sundew or Dew-plant. 

 (I. F. f. 1803.) Scape glabrous, 1-2.5 dm. high- Leaves orbicular or broader, 

 spreading, the blade 6-12 mm. long, abruptly narrowed into a flat pubescent 

 petiole ; raceme 1 -sided; pedicels 2-4 mm. long ; flowers white, about 4 mm. 

 broad; petals oblong; seeds fusiform, pointed at both ends, the testa loose. In 

 bogs or wet sand, Lab. to Alaska, Fla. and Ala., and in the Sierra Nevada to Cal. 

 July-Aug. 



2. Drosera intermedia Hayne. Spatulate-leaved Sundew. (I. F. f. 1804.) 

 Ro (tstock elongated; scape glabrous, 0.7-2 dm. high. Blades of the leaves 

 ascending, spatulate, obtuse, 6-14 mm. long, 3-4 mm. wide, gradually narrowed 

 into a glabrous petiole; raceme 1 -sided; pedicels about 3 mm. long; petals white; 

 seeds oblong, the testa close, roughened. In bogs, N. B. to Sask., Fla. and La. 

 Also in the W. I. and Europe. July-Aug. 



3. Drosera longifdlia L. Oblong-leaved Sundew (I. F. f. 1805.) Simi- 

 lar to the preceding, but the leaf-blade erect, longer (1.5-3 cm. long, 3-4 mm. 

 wide), elongated-spatulate ; pedicels 1-6 mm. long; flowers white, 4-5 mm. broad; 

 seeds oblong, obtuse at both ends, the testa loose. In bogs, Newf. and arctic 

 America to Br. Col., Ont. and Cal. Also in northern Europe and Asia. Summer. 



4. Drosera linearis Goldie. Slender-leaved Sundew. (I. F. f. 1806.) 

 Scape low but sometimes exceeding the leaves, glabrous. Petioles erect, glabrous, 

 5-10 cm. long ; blade linear, 2-8 cm. long, about 2 mm. wide, obtuse ; flowers 

 few, or solitary, white; seeds oblong, the testa close, smooth and somewhat shin- 

 ing. In bogs, shores of Lake Superior and Lake Huron, west to the Canadian 

 Rocky Mrs. 



5. Drosera filiformis Raf. Thread-leaved Sundew. (I. F. f. 1807.) Scape 

 glabrous, 2-5 dm. high. Early leaves lanceolate, the apex glandular; later leaves 

 filiform, glandular-pubescent, 1.5-4 dm. long, about 2 mm. wide, woolly with 

 brown hairs at the base; racemes i-sided, 10-30-flowered; pedicels 4-8 mm. long; 

 flowers purple. 8-25 mm. broad; petals obovate; seeds fusiform, the testa minutely 

 punctate. In wet sand, E. Mass. to Fla. July-Sept. 



Order 18. ROSALES. 



Herbs, shrubs or trees, the flowers usually petaliferous and the petals 

 distinct. Stamens mostly perigynous or epi^ynous. Sepals mainly 

 united or confluent with the concave receptacle. Carpels one or more, 

 distinct or sometimes united into a compound ovary. 



* Small aquatic fleshy herbs, with a spathe-like involucre, and a 2-3-celled capsule ; 

 perianth none. Fam. 1. Podostemaceae. 



* * Land or rarely swamp plants without an involucre. 

 + Endosterm present, usually copious and /lesliv ; leaves tnostly without stipules. 

 Herbs. 



Carpels as many as the calyx-segments; stamens as many or twice as many. 



"Hants succulent ; carpels distinct or united at the base, in ours dehiscenl length- 

 wise. Fam. 2. Crassulaceae. 

 p lants not succulent; carpels united to the middle, circumscissile. 



Fam. 3. J'cnthoraceae. 



