234 
Peduncles stout, spreading, 2-5 mm. long. 
2. C. marginata. 
Peduncles deflexed, 2-5 mm. long, fruit rooting in the 
mud, 
Leaves spatulate, three-nerved. 3. C. Nuttalliz. 
Leaves linear, one-nerved. 4. C. sepulta. 
Enclosed in a perigonium. Peduncles very long. 
5. C. longipedunculata. 
Fruit sessile. 
With a perigonium. . 
Fruit oblong, narrowly winged on the apical margin, flat 
on the face, ‘styles shorter than the fruit and decid- 
uous. 6. C. verna. 
Fruit obovate, wings nearly wanting, plano-convex on 
the face. Styles longer than the fruit, persistent. 
7. C. heterophylla. 
Fruit with broad membranous wings which run around 
the entire margin. Styles elongated, deciduous. 
8. C. stenocarpa. 
Fruit orbicular, margins obtuse. Styles elongated, mostly 
deciduous. 9. C. Bolanderi. 
Without a perigonium. | 
Leaves all submerged and linear. 10. C. autumualis. 
Leaves all spatulate. Fruit curiously gibbous at the base. 
11. C. peploides. 
1. C. deflexa. Braun, var. Austini. Hegelm. Verhandl. Bot. 
Brand. p. 17 (1867). 
C. Austini. Englm. Gr. Man. Ed. 5, 428 (1867). 
_ Terrestrial, 2-4 cm. high, growing on damp soil in shady 
woods. Leaves spatulate or obovate, three-nerved, 3-4 mm. 
long and nearly or quite 2 mm. broad, tapering at base into a 
short margined petiole. Fruit about § mim. long by § mm. 
broad, deeply notched at both ends; lobes with a narrow mar- 
ginal wing or raised border and a deep groove between them ; 
usually with a minute peduncle nearly or quite their own length. 
_ Styles persistent, shorter than the fruit, spreading or reflexed. 
_ The dried plant exhales a pleasant odor like that of MJe/ilotus. 
