Ranunculacese. 



19 



134 Stem erect, . . . . 



134 Stem decumbent, 



135 Calyx reflexed, 

 135 Calyx spreading, . 



136 Calyx spreading 137 



136 Calyx reflexed 138 



137 Peduncles furrowed, 

 137 Peduncles not furrowed, 



138 Flowers small, . 



138 Flowers large, . 

 139 Acrid, . 

 139 Not acrid, . 



13s 



39 



R. parviflorus. 

 R. hireutus. 

 R. arvensis. 



. R. repens. 



R. sceleratus. 



R. bulbosus. 



R. acris. 



R. auricomus. 



RANUN'CULUS AQUAT'ILIS (69). Water Crowfoot. 5—8. Float- 

 (12-20) ing leaves reniform lobed, submerged leaves finely divided. Ponds. 



RANUN'CULUS HEDERA'CEUS (loi). Ivy-leaved Crowfoot. 



(22) 5 — 8. Leaves all alike reniform crenate, crenatures broadest at 



the base, petals 3-veined scarcely longer than the sepals. Ponds. 



Ranun'culus Lenormandi (48). Leaves all alike reniform crenate, crenatures 

 (21) narrowest at the base, petals5-veined twice as long as the sepals. [W.CI. 



RANUN'CULUS FICA'RIA (105). Lesser Celandine. 



-5. Leaves 



(36) stalked cordate crenate, root of many tubers. Among grass under trees. 



RANUN'CULUS ARVEN'SIS (66). 5—7. Stem erect, leaves pale 

 (34) green glabrous deeply cut into narrow segments, peduncles not 



fiirrowed, flowers small pale yellow, sepals spreading, achenes covered 



with hooked spines. Cornfields. 



RANUN'CULUS PARVIFLO'RUS (57). 5—8. Stem slender 

 (33) decumbent, radical leaves hairy orbicular or reniform, cauline leaves 



3- or 5-lobed, flowers very small, peduncles turrowed, carpels 



tubercled. Dry banks. 



RANUN'CULUS HIRSU'TUS (74). Pale hairy Crowfoot. 6—10. 



(32) Calyx reflexed hairy, stem upright many- flowered hairy, leaves 



tripartite, achenes tubercled towards the margin. Waste places. 



RANUN'CULUS FLAM'MULA (112). Lesser Spearwort. 6—8. 

 (25) Leaves linear entire, stem 4 — 12 in. decumbent at the base often 

 rooting many-flowered. Ditches. 



RANUN'CULUS LIN'GUA (78). Great Spearwort. 7—9- 

 (27) erect stout 2 — 3 ft., leaves lanceolate serrate sessile. 



Stem 



