OKDEU 18 ELATINACE^E. 51 



1. DROSERA, L. SUNDKW. (JpoGo?, dew; from the dew -like se- 

 cretion.) Sep. 5, united at base, persistent. Pet. 5. Stam. 5. Sty. 3 5. 

 each 2-parted, the halves entire or many-cleft. Caps. 3-5-valved, 1-cclled, 

 many-seeded. (f) or U Small marsh herbs. Lvs. covered with reddish, 

 glandular hairs, secreting a viscid fluid. Flowers in a raceme on & slender 

 scape which is at first coiled, uncoiling as the flowers open. 



* Scapes 46 times as long as the spreading leaves .......................... Nos. 1-3 



* Scapes 12 times as long as the ascending leaves ......................... Nos. 4-C 



1 D. rotuiidifolia L. Lvs. orbicular, abruptly contracted into the hairy petiole ; (Is 



white. (D A cnrions little plant, in bogs and muddy shores. Scapes 6 S', (Mi-flow- 

 ered. Leaves 12'. glistening as with dew-drops. June Aug. 



2 D. caplllari* Poir. Lvs. obovate, cuneiform at base, the petioles naked ; flower* 



purple ; scape erect. () Marshes, S. Car. to Fla. Scapes 312', 6-12-flowered. May. 



3 D. brevifolla Ph. Lvs. cuneiform-spatulate, forming a small, dense tuft (!' diam.) ; 



petiole* very short, hairy: flowers few, rose-colored. N. Car. to Pla. 25'. 



4 D. loiijrifolla L. Lvs. spatnlate-oblong or obovate, ascending, alternate, taperinp 



at base into a long, smooth petiole ; scape declined at base : pet. wh. if 4-7'. Lvs.2-3'. 



5 O. linourlN Goldie. Lvs. linear, obtuse; petioles elongated, naked, erect ; scape? 



few-flowered, about the length of the leaves (30 : calyx glabrous, much shorter than 

 the oval capsule : seeds oval, smooth. 11 Borders of lakes. North. White. 



6 JO. till form is Raf. Lvs. filiform, very long, erect ; scape nearly simple, longer thai. 



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

 dnlar calyx ; style 2-parted to the base, it Wet sand. If. Purple. 



2, DIONJEA, L. VENUS' FLY-TRAP. (One of the names of Venus.) 

 Stam. 10 15. Sty. united into 1, the stigmas many-cleft. Caps, breaking 

 irregularly in opening, 1-celled. Seeds many, in the bottom of the cell. 

 U Glabrous herbs. Lvs. all radical, sensitive, closing convulsively whep 

 touched. Scape umbelled. 



D. muscipula Ell. A very curious plant. Sandy bogs in Car. Lvs. rosulate, lamina 

 roundish, spinulose on the margins and upper surface, instantly closing upon insectt 

 and other objects which light upon it. Scape 612', with an umbel of 810 whitr 

 flowers. April, May. t 



ORDER XVIII. ELATINACE^E. WATER PEPPERS. 



Herbs small, annual, with opposite leaves and membranous stipules 

 Flowers minute, axillary. Sepals 2 5, distinct or slightly coherent at base 

 persistent. Petals hypogynous, as many as the sepals. Stamens twice af 

 many as the petals, anthers introrse. Ovai-ies 2-6-celled. Stigmas 2 6, capi- 

 tate ; placenta in the axis. Fruit capsular. Seeds numerous, exalbuminous. 



ELATINE, L. MUD PURSLANE. Fls. 2-, 3-, or 4-parted, symmetrical, 

 all the parts distinct except the united ovaries. Stig. sessile. ? Very smnl 1 

 plants growing in mud, with minute, axillary, sessile flowers. 



1 K. Americana Am. Stems creeping, diffuse, in patches ; branches ascending 1 -2' ; 



leaves wedge-obovate, 2", obtuse ; flowers 2-parted, rarely 3-parted ; seeds 6 8. 



2 E. Cltiitoniaiia (Peck). Stems erect, 4", in very dense tufts, from matted roots ; 



IVH snatulate. i" ; fls. 2-parted ; seeds slightly curved. Sand Lake, N. Y. (C. II. PcckV 



