CalUtriche.] haloragace.e. — ceratophyllace.e. 177 



In ditches, pools, slow streams and rivevs ; abundantly. Fl. April — Septem- 

 ber. Q. 



The bracts are convoluted in opposite directions around the single anther, which 

 is at the first nearly sessile and closely embraced by them, the filament elongating 

 greatly afterwards. 



2. G.platycarpa,Kuiz. Wide-fruited Water Starwort. "Fruit 

 nearly sessile, lobes parallel in pairs slightly winged at the back, 

 styles erect in the flower reflexed closely over the fruit, bracts 

 falcate."— 5a&. Man. p. 118. E. B. S. t. 2864. C. verna /S., Br. 

 Fl. p. 370. 



Frequent on the wet margins of pools, &c. " FL May— Sept. 0. or If." — 

 Bah. 



Its distinctive characters seem to me very questionable, and just such as diffe- 

 rence of locality might be supposed capable of creating. 



8. G.pedunculata,'DG. Pedunculated Water Stanvort. "Fruit 

 stalked or nearly sessile, lobes parallel in pairs obtusely keeled at 

 the back, styles divaricate in the flower reflexed over the fruit, 

 bracts 0." — Bab. Man. -p. 118. E. B. S. t. 2&0(i. Br. Fl. -p. S7Q. 



In deep still waters; not very commonly. FL "June — Sept. 0. or If ." — 

 Bab. 



A plant which I have supposed to be this, but which I have not yel minutely 

 examined, grows in several places, chiefly in deep still waters of ditches and 

 drains, but not very commonly.* 



Order XXVII. CERATOPHYLLACE^, Gray. 



" Flowers imperfect, monoecious. Perianth (involucre ?) sim- 

 ple, free, 10 — 12 cleft. Barren fl. : — Anthers 12 — 20 sessile, 

 2-celled, 2 — 3 cuspidate. Fertile Jl.: — Ovary superior, soHtary, 

 bicuspidate above the base, 1 -celled with 1 pendulous ovule. Style 

 oblique, filiform, at length hardened persistent. Stigma simple. 

 Fruit an achene, 1-seeded. Albumen 0. Embryo straight ; with 

 2 cotyledons and a many-leaved plumule ; radicle inferior. — An 

 aquatic order comprising one genus of doubtful affinity. Leaves 

 whorled, rigid, dichotomous, with narrow serrated segments." — Br. 

 Fl. 



* [A detailed list of localities occurs in the author's MSS., but as it is prefaced 

 with marks of doubt respecting the specific identity, we have thought it more 

 prudent to throw it into a foot-note. It is as follows. — Edrs.] 



C. aulumnalis P aut pedunculata ? — In a little pond at Rew Street. Ditch at 

 the foot of Bleak Down, near the branching off of the road to Chale, Godshil], 

 &c., but not flowering. Little pool in Northwood park. Miss Kilderbee ! By 

 Lower Knighton mill. Abundantly in the mill-pool between Newport and Caris- 

 brooke, and which Mr. Borrer, who was with me, thought might be C. peduncu- 

 lata, but we could not find fruit or flower on it. In the mill-stream at Bridge 

 Court, but not observed to fructify. On these stations the leaves were coustanlly 

 linear and all submerged. 



2 A 



