parnassiacp:^:. (parnassia family.) 37 



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

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

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

 and northward. April. U — Scapes 1°- H° high. Flowers 1' or more wide. 



2. D. longifolia, L. Rhizoma long and slender ; leaves lincar-spatulate, 

 graduall}' 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 s\tamps, oftener in water, Florida and 

 northward. May and June. IJ. — 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- 

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

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

 olina (Lose). April and May. Q or y. — Scape 6'- 1.5' liigh. Leaves 2' -3' 

 long. Flowers pale rose-color. 



4. D. rotundifolia, L. Rhizoma none ; leaves orbiculai*, abniptlj' con- 

 tracted into tlie 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. Q — Scapes 6' - 9' high. Leaves 2' long. 

 Flowers white. 



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

 none; leaves short, wedge-shaped; scape erect, 3-G-flowcred; calyx oval; 

 seeds ovoid, minutely glandular. — Low sandj- pine barrens, Florida to North 

 Carolina. April. — Scapes 3' -C high. Leaves j' long. Flowers ^' wide, 

 white. 



2. DIOWJEA, Ellis. FLv-TRAr. 



Stamens 10-1.5. 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 tJie 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. D. muscipula, I"ilis. — 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 Historv, Vol. I. 1834. 



Order 17. PARNASSIACE^. (Parnassia Family.) 



Perennial smooth herbs, with ovate or renlform 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 



