DROSERACE^. 41 



Order XVI. DROSERACE^.— Sundews. 



Sepals 5, persistent, equal, with an imbricate aestivation. 

 CoroUa of 5 nearly equal petals. Stamens distinct, either equal 

 in number to the petals and alternate with them, or 2 or 3 or 

 4 times as many. Styles 3 — 5, either wholly distinct or slightly 

 connected at the base, bifid or branched. Capsule of 3 or 5 

 valves. Seeds either naked or furnished with an arillus ; em- 

 bryo minute, in the base of fleshy albumen. — Delicate herbs, 

 often covered with glandular hairs. 'Leaves alternate, with 

 stipulary cilise and a circinate vernation. 



1. DROSERA. Z/wm.— Sundew. 



(From the Greek Spogo^, dew ; the glands exuding a fluid which makes the plant 

 appear as if covered with dew.) 



Calyx deeply 5-cleft. Petals 5. Stamens 5. Styles 3 — 5, 

 bipartite. Capsule superior, globose or ovoid, 1 — 3-celled, 

 3— 5-valved, many-seeded. 



1. D. rotundifolia Linri. : leaves all radical, orbicular, spreading, fringed 

 vsnith purple ciliae, pilose above, abruptly tapering into the long hairy petiole ; 

 scape erect, bearing a terminal and mostly simple raceme ; seeds arillate. 



Sphagnous swamps. From Arct. Amer. to Flor. July, Aug. %. — Scape 

 4 — 8 inches high. Flowers small, 5 — 10, whitish. Round-leaved Sundew. 



2. D. longifolia Ldnn. ; leaves spatulate-oblong, erect-spreading, tapering 

 below into the long and slender naked petiole ; scape declined at base ; seeds 

 not arillate. D. Americana MuM. D. foliosa Ell. 



Swamps. Can. to Alabama. July, Aug. '2J.. — Scape 3 — 6 inches long, usu 

 ally curved to one side at the base. Flowers 5 — 9 in a raceme, twice as large as 

 in the preceding. - Long-leaved Sundew. 



3. D.filiformisRaf.: leaves filiform, very long, nearly erect, glandular 

 the whole length ; scape longer than the leaves, many-flowered, simple or 

 bifid, D. tenui folia Willd. 



Sandy swamps. Mass. to Flor. ; rare. Aug., Sept. %. — Scape 8 — 12 inches 

 high. Leaves 6 — 10 inches long. Flowers purple, few, in a one-sided raceme. 



Thread-leaved Sundew. 



2. PARNASSIA. Linn. — Parnassus Grass. 

 (From Mount Parnassus ; on account of the beauty of this plant.; 

 Calyx deeply 5-cleft. Petals 5. Scales (or abortive sta- 

 mens?) opposite to the claws of the petals, terminating in 

 glandular bristles at the apex. Stamens 5. Stigmas 4, sessile. 

 Capsule 4-valved, 1 -celled. Seeds arillate, numerous. 



1. P. Caroliniana Mich. : radical leaves cordate, drbicular-ovate, on long 

 petioles ; cauUne one sessile ; flowers solitary, terminal ; scales 3-bristled. 

 P. Americana and P. ovata Muhl. 



