220 POLYANDRIA — POLYGYNIA. [Caltha- 



petiolated leaflets which are iJ-lobed or 3-partite and cut, root 

 bulbous. E. Bot. t. 515. 



Meadows and pastures, frequent. Fl. May. 11. — 1ft. high, hair\-. 

 Lobes of the lower leaves subovate ; upper leaves cut into linear seg- 

 ments. 



^f-f Leaves divided. Pericarps tuberculated or miiricated. Amiuul. 



13. R. hirsutus, Curt, (^pale hairy Crotcfoot) ; calyx reflexed, 

 stem erect many-flowered hairy, leaves 3-lobed or 3-partite, 

 lobes obtuse cut, root fibrous, pericarps margined and tubercu- 

 lated. E. Bot.t. 1501. — R, Philonotis, Ehrh. 



Meadows and waste ground. Fl. June — Oct. 0. — Varying extreme- 

 ly in size. When very small it is R. parvulus. 



14. R. arvensis, L. (^Corn Crowfoot) ; calyx spreading, stem 

 erect many-flowered, leaves 3-cleft their lobes generally again 

 S-cleft into linear entire or bi-tridentate segments, pericarps 

 muricated. E. Bot. t. 135. 



Corn-fields, jp/. June. ©. — Pencarps very large and prickly. Flow- 

 ers small, pale yellow. — Said to be extremely injurious to cattle. 



15. 'R. parvijlorus, L. {snmll-Jioioered Croiofooi) ; stem spread- 

 ing, leaves hairy 3-lobed and cut, peduncles opposite the leaves, 

 calyx as long as the petals, pericarps muricated. E. Bot. t. 120. 



Corn fields about London, Norwich, and in the S. and S. W. of 

 England. Chelmsford. Hackfall. Ormeshead. Cork. Sand-hills be- 

 tween Beldoyle and Howth, Dublin. Fl. May — June. 0. — Well dis- 

 tinguished by its spreading stems, lateral Jloicer-stalks, and small narrow 

 petals, one or two of which are often wanting. 



21. Trollius. Litin. Globe-flower. 



1. T. Eiiropaus, Li. (3Iowitai7i Globe- foicer) ; calyx of about 

 15 concave erect leaves, petals nearly as long as the stamens. 

 E. Bot. t. 28. 



Moist mountain-pastures in the north of England and of Ireland, 

 Wales and Scotland. Fl. June, July. 1/ . — Leaves in 5, deep segment?, 

 •which are again cut and serrated. Flowers large, handsome. Petals 

 often partly concealed by the spreading of the stamens. 



22. Caltha. Linn. Marsh-marigold. 



1. C. paJiistris, L. (coimnon Marsh-marigold) ; leaves orbicu- 

 lari- cordate orreniform crenate, calyx-leaves 5 — 6 oval. E. Bot. 

 t. 50G. — /3. stem creeping, leaves cordato-triangular sharply 

 crenate. C. radicans, Forst. — E. Bot. t. 2175. 



Marshy places, common. — /3. Scotland, especially in mountainous re- 

 gions ; but I have rarely seen it wild with leaves so decidedly triangular 

 as a plant long cultivated as such in the Edin. Bot. Card. Fl. March — 

 June. 1[. 



