132 29. ONAeEACEa:. — 30. haioragace^. 



4. Cibcjs'a Linn. 



1. C. hitetidna (L.) ; I. ovate or slightly cordate below repand- 

 dentioulate opaque, petioles subterete, bracteoles 0, pet. , deeply 

 emarginate, lobes broadly obovate, cal. bairy, ovary 2-celled, fr. 

 broadly obovate.—^. 5.' 1056. iSt. 23. 1.— Pet. as long as the 

 herbaceous sepals, broad below. Fr. persistent. — Woods and 

 hedge-banks. P. VI. — VIII. Enchanter's Nightshade. E. S. I. 



2. C. alpma (L.)'; I. cordate acuminate repand-dentate shi- 

 ning, petioles fiat with membranous wings, bracteoles setaceons, 

 pet. bifld, lobes oblong, cal. glabrous, ovary 1-celled. — E. B. 

 1057. St. 23. 2.— Usually glabrous. Pet. shorter than the 

 membranous sepals, narrow below. Fr. soon falling. Bracteoles 

 deciduous. — ^. C. intermedia (Ehrh.) ; fl. larger, sep. less mem- 

 branous equalling the petals. Whole plant much larger. — 

 Woods and thickets in mountainous districts, P. VII. VIU. 



E. S. I. 



Order XXX. HALOEAGACE^. 



Cal. adnate to the ovary, limb minute. Pet. minute, from 

 the throat of the calyx. Stam. 1 — 8, inserted with the petals. 

 Ovary of 1 or more cells. Styles equal in number to the cells. 

 Fr. dry, not bursting, usually crowned with rim of calyx. Seeds 

 pendulous ; albumen fleshy. — ^Stip. 0. 



1. ilymopHYLLUM. Monoecious. Cal, 4-parted. Pet. 4, 

 soon falling, exceeding the calyx in the male, small and 

 reilexed or in the female. Stam. 8, Styles 4, villose. 

 Fr, tetragonal, separable into 4 hard nuts. 



2. HippuKis. Calyx-limb very minute, obsoletely 2-lobed. 

 Pet. 0. Stam. 1. Style filiform. Stigma simple, acute. 

 Fruit a 1-celled nut. 



1. MrEioPHTL'LTJM; Linn. Water-Milfoil. 



1. M. verticilldtum (L.); fl. all axiUary xohorled,^ bracts pin- 

 natifid. — iJ. B. 218. — ^L. whorled, pinnatifldly divided into se- 

 raceous segments. Bracts more or less longer than the flowers, 

 pinnatifld or (Jful. pectinatu/m DC.) pectinate. — Ponds and ditches, 

 tare. P. VII. VIII. E. I. 



2. M. spicdtum (L.) ; fi. whorled forming a leafless spike, 

 bracts small entire, spike erect when in bud. — E. B. 83. — L. 4 

 in a whorl, submersed. Lower bracts often pectinate. — Ponds 

 and ditches. P. VI. VII. E. S. I. 



