Mr. C. C. Babington on the Batrachian Ranunculi. 403 



J. Lange has sent it to me from Denmark. It has sometimes 

 been mistaken for the R. marinus (Fries), with which it has 

 very httle in common. 



Subsection C. No submersed leaves. Receptacle not hispid. 



11. R. ccenosus (Guss.) ; leaves all roundish cordate with 3-5 

 rather deeply divided lobes which widen from their base, petals 

 exceeding the calyx, style terminal upon the ovate-conical ovary, 

 carpels unequally obovate with a terminal point. 



R. ccenosus, Guss. "Prod. Siqipl. 187," and Syn. ii. 39 ; Godr. in 



Fl. de France, i. 19 ; Bah. Man. ed. 3. 7. 

 R. Lenormandi, F. Schultz in Flora oder Bot. Zeit. 1837, p. 727 ! ; 



Walp. Repert. i. 34 ; Bab. Man. ed. 2. 6 ; Eng. Bot. Suppl. 



t. 2930. 

 R. hederaceus /3. grandiflorus, Bab. Man. ed. 1. 5. 



Stem floating or creeping upon mud, branched, nearly round 

 but with slight angles. Leaves not spotted ; lobes very blunt 

 and broad at the top, entire or with 1-3 notches. Petioles long, 

 terete-compressed. Stipules i-adnate, bluntly pointed, the 

 floral ones very broad. Peduncles not narrowed, nearly equal- 

 ling the leaves. Buds oblong. Flowers large. Sepals obovate, 

 concave, greenish, tinged with purple towards the tip, with a 

 diaphanous margin. Petals about twice as long as the calyx, 

 narrow, obovate, 5-nerved, white with a slight tinge of pink, 

 slightly clawed and yellowish below. Nectary round, bordered 

 below. Stamens 8-10, about equalling or a little exceeding 

 the pistils. Style nearly central upon the ovary (that is, the 

 upper edge of the ovary is nearly as prominent and rounded as 

 the lower edge) which narrows gradually into the style. Style 

 short, thick, and slightly curved outwards. Stigma oblong. 

 Receptacle spherical, naked. Carpels with their inner (upper) 

 edge much rounded towards the top, inflated, tipped with the 

 terminal although not always quite central style. 



Flowering from June to August. 



I possess this plant from near Coniston Lake in Westmore- 

 land, near Sheffield, Ncedwood Forest in Staff"ordsbire, Charn- 

 wood Forest in Leicestershire, near Aberystwith in Cardiganshire, 

 near Swansea in Glamorganshire, near Haverfordwest in Pem- 

 brokeshire, near Llanberis in Caernarvonshire, Esher Common in 

 Surrey, Tunbridge Wells in Kent, Lucott Hill in Somerset, and 

 near Plymouth in Devonshire. 



Messrs. Hooker and Arnott indirectly hint (Brit. Fl. ed. 7. 

 p. 8) that near Glasgow this plant may be an altered state of 

 R. hederaceus, for " it is principally met with in ditches where 

 the temperature is raised by warm condensed steam,'^ "and 

 where formerly R. hederaceus only occurred.^' This seems to 

 require more proof than a simple statement afibrds. We want 



27"^ 



