TARNASSIACE^E. (PARNASSIA FAMILY.) 37 



1. D. filiformis, Raf. Rhizoma thick, creeping; leaves erect, filiform, 

 elongated, smooth at the base ; scape smooth, many-flowered ; flowers large, 

 bright purple ; calyx hairy ; seeds oblong, dotted. Low pine barrens, Florida 

 and northward. April. 1J. - - Scapes 1 - 1 high. Flowers 1 ' or more wide. 



2. D. longifolia, L. Rhizoma long and slender ; leaves linear-spatulatc, 

 gradually narrowed into the long and smooth petiole, the upper ones erect ; 

 scape smooth, declined at the base, 8 - 12-flowered ; calyx obovate ; seeds 

 oblong. (D. foliosa, Ell.) Sandy swamps, oftencr in water, Florida and 

 northward. May and June, ty Scapes 4' -6' high. Flowers small, white. 



3. D. capillaris, Poir. Rhizoma short or none; leaves spatulate, nar- 

 rowed into the long and smoothish petiole ; scape slender, smooth, erect, 9 - 20- 

 flowered ; calyx obovate ; seeds oval, finely furrowed and granular. (D. brevi- 

 folia, var. major, Hook.) Boggy ponds, Apalachicola, Florida, to South Car- 

 olina (Bosc.). April and May. or )J. Scape 6' -15' high. Leaves 2' -3' 

 long. Flowers pale rose-color. 



4. D. rotundifolia, L. Rhizoma none ; leaves orbicular, abruptly con- 

 tracted into the hairy petiole ; scape erect, smooth, 6 - 10-flowered ; calyx ovoid; 

 seeds covered with a loose membranaceous coat. Mossy swamps, Florida and 

 northward. May and June. Scapes 6' -9' high. Leaves 2' long. 

 Flowers Avhite. 



5. D. brevifolia, Pursh. Glandular-pubescent throughout ; rhizoma 

 none ; leaves short, wedge-shaped ; scape erect, 3 - 6-flowered ; calyx oval ; 

 seeds ovoid, minutely glandular. Low sandy pine barrens, Florida to North 

 Carolina. April, (l) Scapes 3' - 6' high. Leaves ' long. Flowers %' wide, 

 white. 



2. DIO1OEA, Ellis. FLY-TRAP. 



Stamens 10-15. Styles united. Stigmas 5, fimbriate. Capsule 1-celled, 

 opening irregularly. Placenta at the base of the cell, many-seeded. A smooth 

 perennial herb, with the habit of Drosera. Leaves spreading, on broadly-winged, 

 spatulate petioles, with the limb orbicular, notched at both ends, and fringed on 

 the margins with strong bristles ; sensitive ! Flowers in a terminal umbel-like 

 cyme, white, bractcd. 



1. ID. ULUSCipula, Ellis. Sandy bogs in the pine barrens of North Car- 

 olina and the adjacent parts of South Carolina. April and May. Scape 1 

 high, 8 -10-flowered. Flowers 1' wide. For an interesting account of this 

 remarkable plant, see Curtis's Plants of Wilmington, in the Boston Journal 

 of Natural History, Vol. I. 1834. 



ORDER 17. PARNASSIACE-&2. (PARNASSIA FAMILY.) 



Perennial smooth herbs, with ovate or reniform chiefly radical and 

 entire leaves, on long petioles, and large solitary flowers terminating the 

 scape-like, 1-leaved stem. Sepals 5, persistent. Petals 5, ovate or obo- 

 4 



