6 RANUNCULACE& [R 



J-adnate, auricles large rounded, petals much larger than the calyx some- 

 times 2-seriate, veins many, stamens many short, receptacle conical at length 

 glabrous, style cylindric. Common, a very large and distinct form. VAB. 

 Bach'ii, Wirtg. (sp.); leaves shorter almost sessile narrower. Rare. 

 8ub-sp. TRIPARTI'TUS, DC. (sp.); floating leaves or all 8-lobed nearly' to 

 the base or 3-partite, segments cuneate, submerged or with collapsing 

 segments, peduncles slender shorter than the leaves, stipules free, receptacle 

 pubescent, style slender deciduous. Surrey, Pembroke, Cornwall, Ireland. 



2. R. Iienonnan'di, Schultz ; leaves uniform floating or subiiicr^vil 

 alternate long-petioled orbicular-reniform, lobes or crenatures broad shallow 

 narrowest at the base, stipules large broad 4-adnate, petals 5-veiiied twice 

 as long as the calyx, receptacle glabrous, style usually termiual. R. 

 casno'sus, Greu. and Godr., not of Gussone. 



Shallow ponds and ditches from Mid- Scotland south ; south half of Ireland ; 

 ascends to 1,600 ft. in Yorkshire ; fl. June- Aug. Stem branched. Leaven 

 very variable in size, rounded and more crenate than in R. kederaceus. 

 Flower J in. diam.-DiSTRiB. W. Europe. 



3. R. hedera'ceus, L. ; leaves uniform usually opposite broadly reni- 

 form 5-angled or -lobed, lobes usually entire broadest at the base, stipules 

 adnate longer than broad, petals narrow 3-veined scarcely longer than the 

 calyx, stamens few, receptacle glabrous, style lateral. R. ccenosiis, 

 Gussone, not of Hook, and Am. Ivy-leaved Ranunculus. 



Shallow ponds and ditches; ascends to 2,200 ft. in Wales; fl. May- Aug. 

 Habit of R. Lenormandi. Leaves more or less angled as in the ivy, often 

 with a semi-lunar black patch, lobes rarely notched. Flows very small. 

 DISTRIB. Temp, and sub- Arctic Europe, S. Africa, Greenland. 



SECTION 2. Hecato'nia. Perennial, rarely annual. Leaves mostly 

 radical, stipules inconspicuous or 0. Stems 2- or more-flowered. Sepals 5. 

 Petals 5, yellow. Achenes not tubercled (except iu R. ophioglossifolitui). 

 * Leaves undivided ; gland of petals irith a small scale. 



4. R. Lin'prua, L. ; perennial, erect, leaves lanceolate sessile 4-am- 

 plexicaul entire or toothed, achenes pitted, style broad. Spear-wort. 

 Marshes and ditches, from Moray south, local in Ireland ; fl. July-Sept. 



Glabrous. Roots densely fibrous. Stem 2-3 ft., hollow ; lower nodes 

 rooting. Leaves 6-10 in. -1 in. broad, veins parallel and reticulated. 

 Flowers 2 in. diam., handsome, sub-panicled. DlSTlUB. Temp. Europe, N. 

 and W. Asia to the Himalaya. 



5. R. Flam'mula, L. ; perennial, procumbent or ascending, leave* 

 petioled linear- or ovate-lanceolate nearly entire, achenes minutely pitted, 

 style minute subulate. Lesser Spear-wort, 



Wet places ; ascends to 2,700 ft. in the Highlands ; fl. June-Aug. Very vari- 

 able, glabrous or slightly hairy, 4-12 in. Loivest leaves petiole^, ovate, upper 

 more lanceolate and sessile. Flower yellow, rarely jf-in. diam. Jlend of 

 achenes small. DISTRIB. Europe (Arctic), N. Asia, Africa, and America. 



Sub-sp. FLAM'MULA proper ; stem prostrate or erect, internodes straight, 

 style of achenes short obtuse. A small form of this passing into the 

 following is found (according to A. Gray) in the N. United States. 



Sub-sp. BKP'TANS, L. (sp.) ; stem creeping very slender, internodeb 



