54 POLYANDRIA—POLYGYNIA. Ranunculus. 



R. hirsutusannuus, floreminimo. Rail Syn. 248. t. 12./. 1. Pluk. 

 Almag. 31 1. Phyt. t.[>b.f. 1. 



R. arvensis annuus hirsutus, flore omnium minimo luteo. Moris. 

 V. 2. 440. sect. 4. t. 28./. 21. 



Ray's Hairy Crowfoot. Pet. H. Brit. t. 38./ 9. 



In gravelly fields_, and under hedges. 



In several places about London, Ray. On Malvern hill, Worces- 

 tershire ; Mr. Ballard ; and in the south-west part of England. 

 With. Near Norwich. Mr. Pitchford. On hedge banks out of 

 St. Stephen's and St. Giles's gates, Norwich. [At Sandgate, 

 Kent.] 



Annual. May, June. 



Root fibrous. Herb pale green, more or less hairy. Ste7ns pros- 

 trate, round, hollow, branched, leafy, about a span long. Leaves 

 stalked, roundish-heart-shaped, acutely notched j the upper 

 ones three-lobed ; uppermost of all in deep lanceolate entire 

 segments. Fl. opposite to the leaves, solitary, stalked, small, 

 yellow, with narrow obovate petals, one or more of which are 

 often wanting, or imperfect. Seeds lenticular, with a broad, 

 compressed, curved point ; their sides densely covered with 

 small, hooked, prominent prickles. 



14. ^. /lederaceus. Ivy Crowfoot. 



Seeds wrinkled. Leaves roundish-kidney-shaped, with 

 three or five lobes, entire, smooth. Stem creeping. 



R. hederaceus. Linn. Sp. PI. 781. Willd.v. 2. 1331. Fl. Br. 595. 



Engl. Bot. V. 28. t. 2003. Curt. Lond.fasc. 4. t. 39. Hook. Scot. 



173. DeCand. Syst. v. 1. 233. Fl. Dan. t.32]. Dalech. Hist. 



103]./ Bank. Hist. v. 3. 774./ 

 R. aquatilis hederaceus albus. Raii Syn. 249. 

 Ivy Crowfoot. Pet. H. Brit. t. 38./ 12. 



In shallow rivulets, ditches, and pools. 



Perennial. May — August. 



A little, smooth, branching, creeping or floating herb, sending down 

 radicles from each joint of its hollow leafy stem. Leaves stalked, 

 opposite or alternate, with 3 or 5 shallow lobes ; their colour 

 dark green, often with a black spot on the disk. Fl. small, with 

 narrow white petals, and from 5 to 10 or 12 stamens. Seeds 

 tumid, with minute transverse wrinkles. 



15. R. aquatilis. White Floating Crowfoot. 



Seeds wrinkled. Leaves in capillary segments underwater; 

 above somewhat peltate, lobed, bluntly notched. 



R. aquatilis. Linn. Sp. PI. 781. Willd. v. 2. 1332. Fl. Br. 596. 

 Engl. Bot. v.2.t.]0l. Hook. Scot. 173. Ger. Em. 829./ Raii 

 Syn. 249. DeCand. Syst. v. 1. 234, Dad. Pempt. 587./ 



