2906 



RANUNCULUS 



RANUNCULUS 



F. Lf. -blades S-lobed or 3-parted: 



beak ofachene recurved 5. monspeliacus 



FF. Lf. -blade pinnately compound, 

 Ifts. or segms. 67: beak of 



achene straight 6. orthorhyn- 



DD. Sepals spreading. [chus 



E. Lvs. temalely or bitemately cut: 

 head of achenes cylindrical; 



achenes glabrous 7. asiaticus 



EE. Lvs. subcordately reniform, 

 incised, lobes cut and dentate: 

 head of achenes short-ovoid; 



achenes hairy on the sides 8. cortusaef olius 



cc. Roots fibrous, not fascicled or tuber- 

 ous thickened (bulbous in No. 11.) 

 D. Fls. white, rose or rarely purple 

 (yellow in a double-fld. variety of 

 No. 11). 



E. The Ivs. dissected. 

 F. Sepals pubescent. 



G. Petals 5 9. glacialis 



GO. Petals 12-20 10. Matthewsii 



FF. Sepals glabrous. 



G. Sts. several-fid 11. aconitifolius 



GG. Sts. 1-3-ftd. 



H. Blades palmately S-lobed: 



petals 5 12. alpestris 



HH. Blades pinnately cut, lobes 



S-lobed: petals 8-10 13. rutaefolius 



EE. The Ivs. not dissected. 



F. Blades sessile and amplexicaul. 14. amplezicaulis 

 FF. Blades petioled. 



G. Sepals glabrous: Ivs. linear or 



lanceolate 15. pyrenaeus 



GG. Sepals pubescent: Ivs. rather 



cordate or ovate-grounded... .16. parnassif olius 

 DD. Fls. yellow (see also a double va- 

 riety of No. 11; fts. scarlet in a 

 form of No. 28). 



E. Lvs. not divided (although some- 

 times lobed). 

 F. Lf. -blades rounded-cordate or 



reniform 17. insignis 



FF. Lf. -blades linear or lanceolate. 

 G. Plants alpine, 612 in. high: 

 Ivs. linear or narrow-lanceo- 

 late: sepals glabrous 18. gramineus 



GG. Plants aquatic, 2-3 ft. high: 

 Ivs. lanceolate, sessile and 

 somewhat clasping: sepals 



vilhus 19. lingua 



BE. Lvs. divided. 



F. Stolons present 20. repens 



FF. Stolons lacking. 



G. Base of st. bulbous 21. bulbosus 



GG. Base of st. not bulbous. 

 H. Rootstocks present, 

 i. Sts. glabrous: Ivs. all radi- 

 cal 22. Enysii 



n. Sts. pubescent: Ivs. both 



radical and cauline 23. montanus 



HH. Rootstocks absent (though a 

 short, erect, thickened cau- 

 dex is often present). 



i. Axis of infl. hirsute 24. polyanthemos 



II. Axis of infl. glabrous. 

 j. Sepals spreading. 

 K. Sts. lax or weak: 

 petals 6-15: upper 

 cauline Ivs. wanting. 25. calif ornicus 

 KK. Sts. strictly erect: 

 petals usually 5: 

 upper cauline Ivs. 

 present. 

 L. Peduncles terete, 



not striate 26. acris 



ix. Peduncles striate . . . 27. lanuginosus 

 jj. Sepals reftexed. 



K. Fls. many onast. . . . 28. constantino- 



[politanus 

 KK. Fls. 1 or 2 on a st.. . 29. anemone- 



[folius 



1. Ficaria, Linn. (Fic&ria Ficdria, Karst.). Peren- 

 nial: roots fleshy, thickened: sts. short, decumbent, 

 branched at base, often with bulblets in the lf.- 



axils: Ivs. 1-2 in. long, ovate, cordate, crenate (some- 

 times entire), somewhat fleshy; petioles long, broad: 

 fls. solitary, golden yellow, about 1 in. across; sepals 3, 

 spreading, oval, concave; petals 8-9, scale at base of 

 petal emarginate: achenes 15-20, in a globose head, 

 very convex, truncate, short-puberulent; receptacle 

 glabrous. April, May. Eu., adventive in N. Amer., 

 Mass, to D.C. B.B. (ed. 2), 2:117. Var. fldre-pleno, 

 Hort., is a double-fld. form. Var. grandifldrus, Hort., 

 is merely a large-fld. form. J.H. III. 53:371. Var. 

 ochroleftcus, Hort., is a form with whitish yellow fls., 

 offered in the trade. 



2. fluitans, Lam. Perennial, aquatic: sts. submersed, 

 usually very long: Ivs. submersed, petioled, the lower 

 Ivs. often long-petioled, about twice 3-parted, divisions 

 very long-linear, 2-3-cleft, segms. nearly parallel: 

 peduncle tapering, bearing a spreading raceme: fls. 

 large, white; petals often more than 5, broadly cbovate, 

 many-veined, contiguous, persistent: achenes obovate, 

 inflated, much rounded at the end laterally, apiculate; 

 receptacle conical, naked. June. Rivers, Eu. 



3. hederaceus, Linn. (Batrachium hederaceum, S. F. 

 Gray). Perennial, semi-aquatic: sts. creeping, rooting 

 at the nodes: Ivs. subreniform or rounded-cordate, 

 3-5 shallow rounded lobes widening to then- base and 

 usually entire or notched at the apex, usually opposite 

 and with a black half -moon; stipules various: peduncles 

 usually shorter than the Ivs.: fls. 3^~M m - across, white; 

 petals very narrow, 3-nerved, distant, sometimes hardly 

 exceeding the calyx; stamens 5-12; style prolonging the 

 nearly straight inner edge of the ovary: achenes few, 

 glabrous, obovate, laterally compressed at the base, 

 inflated or rounded at the top, muticous; receptacle 

 globose, naked. June. Shallow ponds or mud. W. Eu. 

 and naturalized in N. Amer., Newfoundland to S. Va. 

 B.B. (ed. 2)2:116. 



4. psilostachys, Griseb. (R. nyssanus, Petrov.). 

 Perennial, about 18 in. high, appressed silky pubes- 

 cent: sts. branched: radical Ivs. broadly orbicular, 

 subcordate, deeply 3-parted, divisions cuneate, incise- 

 lobed: fls. numerous, large, shining citron-yellow, 2 in. 

 across; sepals reflexed: achenes in a cylindrical spike, 

 ovate, slightly verrucose, beak straight, as long as the 

 body. Servia, Macedonia, and Greece. G.C. III. 

 46:163. 



5. monspeliacus, Linn. Perennial, 1J^ ft. high, 

 white-woolly or sericeus: sts. erect, few-fld.: Ivs. 

 woolly, ovate-rotund, cordate, the radical 3-lobed, lobes 

 cuneate, trifid or 3-toothed; the upper 3-parted, lobes 

 entire, linear: fls. yellow; sepals hirsute, reflexed; 

 petals obovate: achenes numerous, pubescent, com- 

 pressed, beak recurved and equaling the carpel; 

 receptacle glabrous; head of achenes ovate. April, 

 May. Medit. region. 



6. orthorhynchus, Hook. Perennial, 10-18 in. high, 

 hirsute to nearly glabrous: sts. ereot from a fascicled 

 root of thick fibers: Ivs. mostly oblong, pinnately com- 

 pound; Ifts. or segms. 5-7, lower commonly short- 

 petioluled, usually cleft or incised: fls. yellow, some- 

 times purple outside; sepals reflexed, soon deciduous; 

 petals 7-16, i/-Kin. long, obovate, much surpassing the 

 sepals: achenes in an ovoid head, not numerous, ovate, 

 nearly 2 lines long, strongly margined, beak slender, 

 subulate, rigid, straight, nearly as long as the body. 

 May-July. Wet places, Brit. Col. to Ore. and Mont. 

 Var. platyphyllus, Gray (R. mdximus, Greene), is more 

 robust, growing 1-5 ft. high, the Ifts. often 3 in. long, 

 laciniately cleft and incised and the petals often larger 

 than the type. N. Utah, Idaho, Wash, to Calif, and 

 reported from Brit. Col. 



7. asiaticus, Linn. (R. orientalis, Hort., not 

 Linn.). Fig. 3341. Perennial, 6-12 in. high: sts. erect, 

 simple or branched, somewhat appressed hirsute: low- 

 est radical Ivs. cuneate-ovate, dentate at the obtuse 



