Oeder 19.— DBOSEBAOB^ 261 



1 B. Virgfnlca Nutt. St. erect, somewhat compressed, branching; Ivs. oblong 

 amplexicaul ; sla. united below the middle, with 3 in each set.--Swamp3 and 

 ditches. U. 9. and Can. Whole plant usually of a purplish hue, 9 — 20' high. 

 Lvs. IJ — 2J' long, J as wide, upper ones lanceolate, lower oblong-ovate, all very 

 obtuse, glaucous beneath. Fls. 6" diam., terminal and axillary. Pet. about twioa 

 longer than the calyx. Glands ovoid, orange-colored. Caps, ovoid-oblong, 

 acutiah. Jl. — Bept 



2 B. petiol4ta Ph. Lvs. oblong, narrowed at base into a petiole ; fls. mostly in 

 33, axillary, nearly sessile ; filaments united above the middle ; caps, oblong, much 

 longer than the sepals. — Swamps S. States, N. to N". J. St. about 2f high. Lvs. 

 1 — 3' long, rounded-obtuse, with a short but distinct petiole. Fls. smaller than 

 in the last. Aug., Sept. 



Order XIX. DROSERACEiE. Sundews. 



Serbs growing in bogs, often covered with glandular hairs, with lvs. alternate or 



nil radical, mostly circinate (rolled from top to base) in vernation ; fls. regular, 



nypogynous, 5-merous, the sepals, petals and stamens persistent (withering) ; ova. 



compound, one-celled, with the styles and stigmas variously parted, cleft or united 



seeds CO in the capsule, albuminous ; embryo minute. 



Grniera, 6, apeoiefl 90. Curious and interesting plants, scattered over the whole globe 

 >»ffherever maralics are found. The halved stigmas ai'u their uiost singular characteristic. In 

 ♦Uc sundew, &c., each half stigma is distinct, henco apparently doubling their number, but in 

 the suborder, Parna9sia>, the adjacent halves of different stigmas are united, and thus stand op- 

 posite to the placentn. 



1. DRdSERA, L. Sundew. (Gr. Spooog, dew ; from the dew-like 

 secretion.) Sepals 5, united at base, persistent ; petals 5; stamens 

 5 ; styles 3 — 5 each 2-parted, the halves entire or many-cleft ; cap- 

 sule 3 — 5-valved, 1-celled, many-seeded. — U Small aquatic herbs. Lvs; 

 covered with reddish, glandular hairs, secreting a viscid fluid. Verna- 

 tion circinate. 



Scapes 4 — 5 times as long as the leaves Nos. I — .5 



Scapes 1 — 3 times as long as the leaves Nos. 4 — 6 



1 D. rotundlfdlia L. Lvs. orbicular, dbt aptly contracted into the hairy petiole; 

 fls. white. — A curious little plant, not uncommon in bogs and muddy shores. 

 Whole plant of a reddish color, like the other Sundews, and beset with glandular 

 hairs which are usually tipped with a small drop of a clammy fluid, glistening 

 like dew in the sun. Lva about 5" broad and with the petioles 1 — 2' long. 

 Scape slender, 5 — 8' high, the racemes uncoiling as the small white flowers 

 open. Caps, oblong. Ju. — Aug. 



2 D. minor. Ijve. obovate, cuneiform at base, the petioles naked ; fls. purple ; scape 

 erect. — More delicate than the preceding, in marshes, Fla. to Texas. Lvs. form- 

 ing a rosulate tuft, 8 — 12" long, the smooth petiole three times longer than the 

 lamina, which is 2 — 3" wide. Scapes filiform, 3 — 6' high, the raceme simple 

 or forked, 5 or G-flowered. Petals light purple. Caps, globular. Seeds ot>- 

 long, tubercled. May. (D. brevifolia p. major Torr. & Gr. D. intermedia 

 Chapman.) 



3 D. brevifdlia Ph. I/vs. cuneiform-spatulate, forming a small, dense tuft (1' 

 diam.) ; petioles very short, hairy ; fls. few, rose colored. — In wet, springy places. 

 Car. to Fla. and La Not half as large as the last. Lvs. 5 or 6" long, 1—2" 

 broad, flat on the ground, forming a round, compact rosette. Scape 2 or 3' 

 high, bearing ono to three conspicuous flowers. Capsule roundish. Apr. 



4 D. longifolia L. Lvs. spaiulate-oblong or obovate, ascending, alternate, tapering at 

 base into a long, smooth petiole; scape declined at base; petals white. — Slender and 

 delicate, in similar situations with the last. Lvs. slender, ascendiug, crenate, 

 beset with numerous hairs tipped with dew-like drops, — length, including the 

 petioles 2—3'. Candex lengthened, declinate. Scape bearing a simple raeem 

 of small, white flowers, arising 4 — T. Jn. — Aug. 



