30. HAXORAGACELfi. 
147 
denticulate opaqve, petioles suhterete, hracteoles 0, pet. deeply 
emarginate, lobes broadly obovate, cal. hairy, ovary 2-celled, fr. 
broadly obovate.—^. B. 1056. St. 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. alpiTia (L.) ; I. cordate acuminate repand-dentate shi- 
ning, petioles flat with membranous wings, hracteoles setaceous, 
pet. bifid, lobes oblong, cal. glabrous, ovary 1. -celled. — E. B. 
10.57. St. 23. 2. — Usually glabrous. Pet. shorter than the 
membranous sepals, narrow below. Fr. soon falling. Bracteoles 
deciduous. — fi. C. intermedia (Ehrh.) ; fi. larger, sep. less mem- 
branous equalling the petals. Whole plant much larger. — 
Woods and thickets in hilly districts. P. VII. VIII. E. S. I. 
Order XXX. HALORAGACE^. 
Cal. adnate to the ovary, limlj 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. Myeiophyllum. Monoecious. Cal. 4-parted. Pet. 4, 
soon falling, exceeding the calyx in the male, small and 
rellexed or 0 in the female. Stam. 8. Styles 4, villose. 
Fr. tetragonal, separable into 4 hard nuts. 
2. HippuEis. Calyx-limb very minute, obsoletely 2-lobed. 
Pet. 0. Stam. 1. Style filiform. Stigma simple, acute. 
Fruit a 1-celled nut. 
1. Myeiophyi'lum Linn. Water-Milfoil. 
1. M. verticilldtum (L.) ; fl. all axillar]/ luhorled, bracts pin- 
natifid. — E. B. 218. — L. whorled, pinnatifidly divided into 
setaceous segments. Bracts more or less longer than the 
flowers, pinnatifid or {M. pectinatum DC.) pectinate. — Ponds 
and ditches, rare. P. VII. VIII. E. I. 
2. M. spicdtum (L.) ; 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. 
3. J/, alternifldrum CDC.) ; sterile fl. alternate about 6 form- 
ing a leafless spike, spike nodding when in bud afterwards erect, 
fertile fl. about 3 together in axillary luhorls at the base of the 
