44 LAWSON: EE VISION OF THE 



Sub-section 3. Terrestrial, with fibrovis roots, undivided leaves and yellow petals. 



13. E. Cymbal aria. 



14. R. Cymbalaria, var. alpiniis. 



10. R. reptans. 



11. E. reptans, var. ft. intermedins. 



12. R. ambigens. 

 Snb-section 4. Terrestrial, with fibrous roots, the leaves more or less divided or deft, 



at least the upper ones, petals yellow. 



28. R. Pallasii. 



29. R. Hookeri. 



30. R. acris. 



31. R. repens. 



32. R. repens, var. hispidus. 



33. R. oecidentalis. 



34. R. Pennsylvauicus. 



35. R. recnrvatiis. 



36. R. Nelsoui. 



37. R. Nelsoui, var. tenellus. 



38. R. fasioularis. 



39. R. biilbosus. 



15. R. abortivus. 



16. R. affinis. 

 1*7. R. affinis, var. cardiophyllus. 



18. R. affinis, var. leiocarpus. 



19. R. ovalis. 



20. R. glaberrimus. 



21. R. sceleratus. 



22. R. Lappouicus. 



23. R. hyperboreus. 



24. R. hyperboreus, var. pygmteus. 



25. R. nivalis. 



26. R. nivalis, var. sulphiirciTs. 

 2Y. R. nivalis, var. Eschscholtzii. 



Sub-section 5. Terrestrial, root a fascicle of tubers, petals yellow (more than 5.) 

 40. R. digitatus. 



1. — R.^^NUNCULUS HEDERACEUS, vur. LOBBII. 



Receptacles glabrous, totems elongated, floating, G to 12 inches long ; submersed leaves 

 none, or rudimentary, resembling adventitious shoots. Floating leaves 3 to 8 lines wide, 

 deeply 3-lobed, truncate-cordate \ to f in. wide, lobes ec[ual, oval or oblong, the lateral 

 ones usually with a broad notch at the apex. Peduncles opposite the leaves, thicker than 

 the petioles, \ to f in. long. Flower buds globose. Petals 2 or 3 times as long as the 

 persistent sepals. Stamefls about 6 ; achenes few, (about 4), tiirgid, glabrous. Receptacle 

 rounded or flat, glabrous. 



Ranunculus hydrorharis Lobbii. Hieru, Batrachian Ranunculi, Jour. Bot., IX, p. 65, t. 114. 



R. hederaceus, var. Torrey in Report Exped. Whipple, (185*7). Brewer & "Watson, 

 Bot. Calif, ed. 2, p. 5. 



R. aqiiatilis, var. Lobbii. Watson, Bibl. Index, ]). 1*7. 



R. Lobbii. Gray, Am. Jour. Sc, ser. 3, I, p. 4*76. 



R. hederaceus. Macoun, Cat. No. 2*7. 



lu a pool by the roadside uearEscjuimault Harbour, Vancouver Island, 18*75. — Macoun. 

 Oregon.— IT. Lobb, 1852, No. 249; and California, near 35th degree of lat., in 1853-4.— 

 Bigelow, in Herb. Kew., fide Hiern, 1. c. Russian River. — Bola/uler, in Bot. Calif. 



2. — Ranunculus hedeijiaceu.*!, var. hedek-î:folius. 



Differs from the preceding in growing on mud (not floating), the petals not, or scarcely, 

 exceeding the calyx ; leaves with 3 or 5 entire or sub-entire somewhat deltoid lobes, the 

 middle one projecting. Leaves sometimes opposite. 



