Ordek 19.— the sundews. 



171 



i D. longifolia. Long-lemed, S. Lvs. spatulate, on 

 long, smooth stalks. 4-7'. White. (Fig. 20, 21.) 



5 D. linearis. Lmear-Uavai S. Lvs. linear, obtuse ; 



stalks smooth. 8-6'. White. 



6 D. fUiformis. Thread-leaeed S. Lvs. filiform, long. 



Scape If. Purple. 



2. DION^'A. Venus' Ply-trap. 



Sepals 5, spreading. Petals 5, obovate, with 

 pellucid veins. Stamens 10-15. Style 1. Stig- 

 mas 5, many-cleft. Capsule breaking irregularly 

 in opening, 1-celled, many-seeded. — li Glabrous 

 herbs. Leaves all radical, sensitive, closing con- 

 vulsively when touched. Scape umbeUed. 



D. Musoip'ula. A very remarkable plant, in sandy bogs, 

 at the South, sometimes cultivated. Leaves spread- 

 ing, the petiole broadly winged, ending in a roundish 

 blade which is fringed with spines, instantly closing 

 upon insects which alight upon it. Scape G-12' 

 high, bearing an umbel of 8-10 white, handsome 

 flowerB. Apr., May. + 



Fig. 40S. Tenus' Fly-trap. 

 Fig. 405. Section of ovary. 



Fig. 404. Ovary and style. 



8. PAENAS'SIA. Grass-of-Parnassus. 



Sepals 5. Petals 5, inserted on the calyx (pe- 

 rigynous). Stamens also perigynous, in 2 rows, 

 the outer row of numerous sterile filaments, united 



in 5 sets, the inner row of 5 perfect stamens. Stigmas 4, sessile. Cap- 

 sule 4-celled. Seeds very numerous. — y Elegant herbs, with radical 

 leaves and l-flowered scapes. • 



1 F. Oarolinia'na. Meadow G. Sterile filaments, 3 in each set. Leaves about 



7-veined, broadly oval or ovate, radical ones on long- stalks, caulinc few, near 

 the ground, sessile, clasping. Scape about If. high, bearmg one flower at top, 

 which is aboutr 1' across. Petals marked with green veins. July, Aug. 



2 P. asarifolia. Broad-leaved &. Sterile filaments, 3 in each set. Lvs. reniform. S. 

 8 F. palus'tris. Swamp G. Sterile filaments, 9-15 in each set. Lvs. cordate. N. W, 



