252 Ohdsb 19.— DBOSBRACE^. 



6 D. filiformis Eaf. Lvs. filiform, very long, erect ; soapo 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 Fla., much larger thau the preceding species. The Ivs. 

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

 r except near tho base. Scape about a foot high, with largo purple flpwers. Aug., 

 Sept. 



5 D. linearis Goldie. Zvs. linear, obtuse ; petioles elotigated, naked, erect ; seapee 

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

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

 the Rocky Mts. ([looker, Torr. & Gr.) Scape 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. DIONi^A, L. Venus' Fly-tbap. (One of the names of Venns.) 

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

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

 ing irregularly in opening, l-coI!ed ; seeds many in the bottom of the 

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

 Bivcly when touched. Scape umbelcd. 



D. musoipula EU. 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. roaulate, lamina roundish, spiuulose on the mar- 

 gins and upper surface, instantly closing hpon ioseets and other objects which 

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

 May. f 



SnBORDEE, PARKASSIE^, 

 Consists of tho single genus Pamassia, wliich diSers from the Sundews in having 



6 sets of abortive stamens and tho 4 stigmas placed over tho parietal placentae (aa 

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

 stigmas. 



3. PARNASSIA, Toum, Grass ov Parnassus. (Named from 

 Mount Parnassus, the abode of the Muses, Graces, &c.) Sepals 6, 

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

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

 sterile, tho 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 in each group, distinct to near the base, sur- 

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



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

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

 dows and borders of streams, U. S. to Can. Rt. fibrous. • Lvs. 7-veined, broad- 

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

 sessile, clasping, a 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 ; caulino leaf small or none ; rhizome 

 thick and large. — Fla. (Chapman.) 



2 P. pallistris L. Sterile fil. pellucid, setaceous, 9 fo 1 5 in each set ; cauline If, 

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

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

 near the base. Fls. white. Sepals oblong-lanceolate. Petals marked with 3 — 6 

 green or purple veins. 



3 P. asarifoiia Vent Sterile fil., 3 in each set; petals abruptly clawed ; fcs, 

 •reniform. — Mtp., Va. and Car. LvB. large (1 — 2' broad), the cauMne one seasil^ 

 orbicular. Fls. IJ' diam. 



