DROSERACE.E. 41 



ORDER XVI. DROSERACE^E. SUNDEWS. 



Sepals 5, persistent, equal, with an imbricate aestivation 

 Corolla 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. Linn. Sundew. 



(From the Greek fyo?u? , 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 Linn. : leaves all radical, orbicular, spreading, fringed 

 with 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. 1\.. Scape 

 4 3 inches high. Flowers small, 5 10, whitish. Round-leaved Sundew. 



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

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

 not arillate. D. Americana Muhl. D.foliosa Ell. 



Swamps. Can. to Alabama. July, Aug. 1\.. Scape 3 6 inches long, usu 

 ally curved to one side at the base. Flowers 59 in a raceme, twice as large as 

 in the preceding. Long-leaved Sundew. 



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

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

 bifid. D. tenuifolia Willd. 



Sandy swamp. Mass, to Flor. ; rare. Aug., Sept. 1J-. 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, orbicular-ovate, on long 

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

 P. Americana and P. ovata MvM. 



