Drosera. XVIir. DROSERACE^. 179 



1 — 2f higli, simple, and, with tlie leaves, somewhat hairy. Leaves 4 — 6' by 

 1 J — 2i', lanceolate, acuminate, subentire, tapering to short petioles. Peduncles 

 very short, 1 — 5-flowered, axillary. Flowers small, greenish white. Calyx 

 about as long as the corolla. Lower petal twice larger than the others. Cap- 

 sule nearly I' in length. Apr. May. 



Order XVIII. DEOSERACE^.— Sunbews. 



Plants herbaceous, delicate, often covered with glands. 



Lvs. alternate, with stipulary fringes, circinate in vernation. 



Fed. when young, circinate. Sep. 5. persistent, eiiual, imbricate in aostivation. 



Cor.— Petals 5, hypogynous, marescent. 



Sta. distinct, marescent usually equal in number to the petiils. 



Ova. single. Sty. 3—5, either wholly ili.«tiiict or slightly united, bifid or branched. 



Ft. a capsule, i— 3-celled, usually many-seeded. Sds. sometimes ariled. 



Genera 7, species 90, scattered over the whole globe, wherever marshes are found. Their leaves aro 

 usually furnished with glandular hairs, and are entire, alternate or crowded. Attached to this order is 

 the genus Pamassia, regarded by some as lorming a separate order. It is variously located by dift'erent 

 botanists. We follow Torrey and Gray, after I)e Candolle. in placing it here. Some peculiarity exists 

 in the arrangement and structure of the stamens in this genus, which will be mentioned farther on. 



No remarkable properties have been discovered belonging to plants of this order. 



Conspectus of the Genera. 



<.■) in number. Styles 3— 5 Drosera. I 



< hypogynous, all perfect and J 10 — 15 in number. Style 1 Dionaa. 2 



Stamens (perigynous, inner row 5 perfect ones, outer row 5 groups of imperfect ones. . Parnassia. 3 



1. DROSfiRA. 



Gr. Spoaos, dew ; from the dew-like secretion. 



Sepals 5, united at base, persistent ; petals 5 ; stamens 5, with ad- 

 nate anthers ; styles 3 — 5, each 2-parted ; capsule 3 — 5-valved, 1- 

 celled, many-seeded. — Small aquatic kerbs. 



1. D. ROTUNDiFOLiA. Round-lcared Sundew. 



L/ts. radical, nearly round, depressed ; petioles hairy ; scapes erect, bear- 

 ing a simple raceme. — 7^. This curious little plant is not uncommon in bogs 

 and muddy shores of ponds and rivers. It is at once distinguished by the red- 

 dish glandular hairs with which tlie leaves are beset, and which are usually 

 tipped with a small drop of a clammy fluid, appearing like dew glistening in 

 the sun. Leaves small, lying flat on the ground, narrowed into the elongated 

 petiole. Scape 5 — 8' high, at first coiled inward. Flowers arranged on one 

 side, very small, white. Aug. 



2. LONGiFOLiA. Long-lcavcd Sundew. 



lyvs. radical, spatulate and obovate, tapering at base into a long, smooth 

 petiole ; scape bearing a simple raceme. — % A more slender and delicate spe- 

 cies, in similar situations with the last. Leaves slender, ascending, cimeiform, 

 oblong, crcnatc, beset with numerous hairs tipped with dew-like drops, — length 

 including the petiole 1 — 3'. Scape ascending at base, bearing a cluster of 

 small, yellowish-white flowers, and arising 3--8'. Jn. — Aug. 



3. D. riLiFORMis. Thread-leaved Sundew. 



lyvs. filiform, ver}'' long ; .scape nearly simple, longer than the leaves, 

 many-flowered; pet. obovate, cro.sely denticulate, longer than the glandular 

 calyx ; stij. 2-parted to the base. — 7|. Grows in wet sandy places, much larger 

 than the preceding species. The leaves are destitute of a lamina, are suberect, 

 nearly as long as the scape, beset with glandular hairs except near the base. 

 Scape about a foot high, with large, purple flowers. Aug. Sept. 



4. D. LINEARIS. Goldie. Lincar-Uaved Sundew. 



Lvs. linear, obtuse; petioles elongated, naked, erect; scapes few-flowered, 

 about the length of the leaves; cat. glabrous, much shorter than the oval cap- 

 sule ; sds. oval, shining, smooth. — (T) Borders of lakes, Can., Mich, to the Rocky 

 Mts. Hooker. T. (^ G. Scape 3 — & high, with about 3 small flowers. Leaves 

 about 2" wide, clothed with glandular hairs, which are wanting on the petiole. 

 Jl. Aug. 



IG 



