THE FLOKA OF WARWICKSHIRE. 255 



I. Sutton Park ; Coleshill Pool ; pool iu Berkswell Park ; pool in 



Maxtoke Park. 

 II. Black Pool between Sperual and Studley Church. In a pool at 

 Sambourne, I'urt, ii., 459 ; Naptou Hills, Kirk, Herb. I'er. ; 

 Chesterton Pool, i'. (iiul B. ; Comptou Veruey ; Canal, War- 

 wick, H. B. ; Sow Waste Canal ; Canal near Stratford-on- 

 Avon ; small pool near Bii'dingbury Whax'f . 

 M. alterniflorum, DC. Alternate Water Milfoil. 



Native : In rivers, streams, pools, and canals. Local. July. 

 I. Sutton Park ; River Blythe, near Stonebridge ; Coleshill Pool ; 



pool near Berkswell Hall. 

 II. Allesley, if.£., Herb, i er. ; Compton Verney, Herb. Per.; Shrewley 

 Pool ; Chesterton Mill Pool, //. B. ; pool near Farnborough. 

 HIPPURIS. 

 H. vulgaris, Linn. Common Mare's 'Tail. 

 Native : In pools. Very rare. June. 

 I. Tamworth, Herb. Per. 

 II. Compton Verney, //. B., Herb. Per. ; Chesterton Mill Pool, 1872. 



CALLITRICHE. 

 C. vema, Linn. Vernal Water Stanrort. 



Native : In pools and streams. Very rare. May to July. 

 n. Woodloes, near Warwick ? //. B. By the bridge at Honington, Neiob.; 

 pool in Banners Lane, Tile Hill. 

 This species has been recorded for many Warwickshire stations, 

 but I think incorrectly. During the present year I have 

 visited every locality where it was supposed to occur, but 

 have invariably found the plants to be either C. obtu--i(inf)ul(i, 

 or that form of C. platycarpa which most nearly resembles 

 C. vema. 

 C. obtusangula, Le Gal. Obtuse-fruited Water Starwort. 



Native : In pools and streams. Rather rare. May to July. 

 I. Sutton Park, very abundant in several of the streams ; stream 

 near Hampton-in-Arden ; stream near Brown's Wood, Solihull. 

 II. Chesterton Pool ! //. B. Pool near Farnborough ; pool near 

 Chadshunt ; pool at Bii'diugbury. 

 Hitherto overlooked or labelled C. vema by local botanists. 

 C. stagnalis, Scoji. Larrje-fmited Water Starwort. 



Native : In pools, streams, canals, damp sandy or clayey drives 

 in woods, and on mud. Common. May to Juh'. Area general. 

 Two forms are common in the countj' — (1) a small form growing 

 in sandy and clayey damp places in woods, and on mud, and 

 always fruiting abundantly ; (2) a larger, more robust form, 

 growing in streams and pools ; I can see no constant character 

 by which these two forms may be distinguished. 

 C. hamulata, Kutz. Hooked Water Starwort. 



Nati\ e : In pools and streams. Rare. June. 

 I. Sutton Park ; lane from Water Orton to Minwortli 



(Var. pedunculata. Near Whitacre. 1872.) Near Arley Wood ; 

 Shrawberry Wood, Shustoke ; Butler's Wood, Maxtoke. 

 II. Var. sessilis. Bab. Stagnant waters iu Arbury Deer Pai-k, Kirk., 

 Phijt. ii., 970 ; Herb. Per. Yarningale Common ! Haseler, H.B.: 

 pool iu Banners Lane, Tile Hill. 

 The var. sessilis appears to bo the most frequent form. 

 CUCURBITAGE..^. 

 BRYONIA. 

 B. dioica, L. B'd-berried Bri/oni/. 



Native: In hedges and bushy places. Common. June, July. 

 Area fieneral. 



