252 Ohdeh 19.— DROSBRAOBv®. 



6 D. filif6rmia Raf. Los. JUifarm, very long, erect ; scape nearly simple, longer 

 than the leaves, many-flowered; petals obovate, erosely denticulate, longer than 

 the glandular calyx; sty. 2-parted to the base. — Grows in wet, sandy places, 

 along the coast Mass. to Pla., much larger than the preoedingspecies. The lys. 

 are destitute of a lamina, nearly as long as the soape, beset with glandular hairs, 

 except near the base. Soape about a foot high, with largo purple flowers. Aug., 

 Sept. 



S D. linearis Goldie. Los. linear, oituse ; petioks elongated, naked, erect ; scapes 

 few-flowered, about the length of the leaves ; cal. glabrofts, much shorter than 

 the oval capsule ; seeds, oval, shining, smooth. — Borders of lakes, Can., Mich, to 

 the Rocky Mts. (Hooker, Torr. & Gr.) Soape 3—6' high, with about 3 small 

 flowers. Lvs. about 2" wide, clothed with glandular hairs, which are wanting on 

 the petiole. Jl., Aug. 



2. DION.£A, L. Venus' Fly-trap. (One of the names of Venns.) 

 Sepals spreading ; petals 5, obovate, with pellucid veins ; stamens 

 10 — 15; styles united into 1, the stigmas many-cleft; capsule break- 

 ing irregularly in opening, 1 -celled ; seeds many in the bottom of the 

 cell. — % Glabrous herbs. Lvs. all radical, sensitive, closing convul- 

 sively when touched. Scape umbeled. 



D. muscipula Ell. A very curious plant, native of sandy bogs in Car., along 

 rivers from the Neuse to the Santee. Sometimes cultivated in a pot of bog earth 

 placed in a pan of water. Lvs. rosulate, lamina roundish, spinulose on the mar- 

 gins and upper surface, instantly closing upon insects and other objects whidi 

 light upon it. Soape 6 — 12' high, with an umbel of 8 — 10 white flowers. Apr., 

 May. f 



StTBOEDEE, PARl!rASSIE.ai!, 

 Consists of the single genus Pamasaia, which differs from the Sundews in having 

 5 sets of abortive stamens and the 4 stigmas placed over the parietal placenta (as 

 if each stigma were compounded of the two adjacent halves of two divided 

 stigmas. 



3. PARNA.SSIA, Toum. Grass of Parn-assus. (Named from 

 Mount Parnassus, the abode of the Muses, Graces, &c.) Sepals 5, 

 united at base, persistent ; petals 5, persistent, nearly perigynous ; sta- 

 mens in two series, the outer indefinite in number, united in 5 groups, 

 sterile, the inner 5 perfect ; capsule 1-celled, 4-valved ; seeds very nume- 

 rous with a winged testa. — 4 Glabrous herbs, with radical lvs. and 1- 

 flowered scapes. 



1 P. Caroliniana L. Sterile fil., 3 vn, each grov/p, distinct to near the base, sur- 

 mounted with little spherical heads ; pet. much exceeding the cai., marked with 

 green veins; lvs. radical, or sessile on the scape, broad, oval, with no sinus at 

 the base. — An exceedingly elegant and interesting plant, growing in wet mea^ 

 dows and borders of streams, tJ. S. to Can. Rt. fibrous, lvs. 1-veined, broad- 

 oval or ovate, smooth, leathery, radical ones long-stalked, the cauline only one, 

 sessile, clasping, ^ few inches above the root. Scapes 10 — 15' high, with a 

 handsome, regular flower about 1' diam. Jn. — Aug. 



p. Filments nearly as long as the petals ; cauline leaf small or none ; rhizome 

 thick and large — Ma. (Chapman.) 



2 P. paMstris L. Sterile fil. pellucid, setaceous, 9 to 15 m each set; cauline If, 

 if any, sessile; radical lvs. aU cordate. — Bogs and lake shores, Mich, to Lab., and 

 W. to Rooky Mts. Scapes about 6' high, naked or with a single clasping leaf 

 near the base. Pis. white. Sepals oblong-Ianoeolate. Petals marked with 3 — 5 

 green of purple veins. 



3 P. aaarifolia Vent. Sterile fil, 3 in each set; petals abruptly clawed ; lvs., 

 reaifdrm. — Mts., Va. and Car. Lvs. large (1 — 2' broad), the cauline one sessile^ 

 orbicular. Hs. IJ' diam. 



