2418 



OXALIS 



DD. Fls. yellow. 

 E. Sts. erect. 



3. Ortgiesii, Regel. Fig. 2687. Red-tinged: st. tall, 

 rather succulent: petioles long; Ifts. deeply notched, 

 with acute tips: fls. in close forked cymes on long 

 axillary peduncles, small, yellow with deeper veins. 

 Peru. Gt. 1875:817. 



2688. Ozalis comiculata. 



4. valdiviensis, Barn. (0. valdiviana, Hort.). St. 

 short: Ivs. clustered; petioles long: fls. in close umbels 

 on long axillary peduncles, small, yellow with reddish 

 veins. Chile. 



EE. Sts. low or creeping. 



5. corniculata, Linn. (0. stricta. Linn.). Fig. 2688. 

 Slender, prostrate, often rooting, loosely hairy: Ifts. 

 obcordate. Var. atropurpftrea, Planch. (0. tropseololdes, 

 Schlecht.). Spreading, red-purple: fls. few, in umbels on 

 rather short axillary peduncles, small, yellow. Eu. 

 F.S. 12:1205; 19:1968 (a form with variegated Ivs.). 

 R.H. 1897, p. 499. A closely related smaller plant com- 

 mon everywhere as a greenhouse weed, especially in 

 agave and cactus tubs, is the tropical 0. repens, Thunb. 



cc. Lfts. entire, separated. 



6. delicata, Pohl. St. slender, erect, branching: Ifts. 

 ovate or lance-ovate: fls. in forked cymes on long axil- 

 lary peduncles, small, pale rosy. Brazil. 



7. dispar, N. E. Br. St. rather stout, tall, erect, 

 branching: Ifts. lanceolate, subacuminate, heavy- 

 veined: fls. nearly sessile, in compact cymes on long 

 axillary peduncles, rather small, golden. Guiana. B.M. 

 7794. 



BB. Lvs. and scapes from scaly ends of the rootstocks. 



8. oregana, Nutt. Low: Ifts. broadly obcordate, 1-2 

 in. wide: fls. white or rosy, yellowish at base, deeper 

 veined. N. W. coast. 



9. Acetosella, Linn. Scarcely half as large in its 

 various dimensions, otherwise very similar. E. U. S 

 and Eu. Fl. Dan. 980. Often taken for the shamrock. 

 Like the preceding, used sparingly in rockeries. 



AA. Producing tubers: not leafy-stemmed. 



10. rftbra, St. Hil. Lvs. spreading, long-petioled, 

 thin, somewhat hairy, obcordate: fls. in usually com- 

 pound umbels, rosy with deeper veins. Brazil. Gn. 

 50, p. 511 (as O. floribunda). Forms occur also with 

 lilac or white fls. 



11. enneaphylla, Cav. Fig. 2689. Lvs. crowded; 

 Ifts. 9-20, glaucous, >in. long, obcordate-cuneate, 

 nearly sessile: fls. large, solitary, white, with lavender 

 veins. Falkland Isls. Gn. 52:202; 73. p. 339. G.C 

 III. 49:414. G.M. 50:565. G. 34:717; 36:719. A 

 rosy-fld. form is var. rosea, Hort. 



12. aden6phylla, Gillies. (O. Bustilldsii, Phil.). Lvs. 

 crowded; Ifts. 12-22, glaucous, J^in. long, obcordate- 



cuneate with short gland-like base: fls. large, solitary 

 or in few-fld. umbels, rosy-tinged with deeper veins 

 and base. Chile. B.M. 8054. G.C. III. 46:164; 55. 

 400. Gn. 75, p. 358. G. 35:237. 



AAA. Producing bulbs. 



B. Bulbs loosely scaly: not leafy-stemmed. 



c. The bulbs compound, of numerous small ones: Ifts. 8. 



13. Martiana, Zucc. (0. urbica, St. Hil. O. bipunc- 

 tata, Graham. 0. floribunda, Lehm. lonoxalis Mar- 

 tiana, Small). Somewhat long-hairy: Ivs. long- 

 petioled, thin, obcordate, orange-warty beneath, at 

 least around the margin: fls. in loose usually compound 

 umbels, rosy. Trop. Amer. B.M. 2781, 3938. 



cc. The bulbs simple. 



14. tetraphylla, Cav. (lonoxalis tetraphylla, Rose). 

 Lfts. mostly 4, 1 in. long, inversely deltoid, retuse, 

 each crossed by a purple band : fls. rather few in simple 

 umbels, lilac or rosy. Mex. Cav. Icon. 237. G.M. 39, 

 p. 403 (as O. Deppei). L.B.C. 8: 790. 



15. Deppei, Lodd. (lonoxalis Deppei, Small). Differs 

 chiefly in the Ifts. being truncate instead of notched at 

 apex. Mex. L.B.C. 15:1500. 



16. lasiandra, Zucc. (lonoxalis lasidndra, Rose). 

 Lfts. 5-10, several inches long, oblong, spatulate, entire 

 at end, glabrous: fls. in crowded umbels, rosy crimson. 

 Mex. B.M. 3896. Under the variously used name 

 "floribunda" said to occur in the color varieties alba, 

 cserulescens and lildcina. 



BB. Bulbs firm, usually fusiform: Ifts. 8. 

 c. Fls. umbelled, large: acaulescent. 



17. B6wiei, Herb. (0. Bowieana, Hort. O. purpurea, 

 Hort.). Fig. 2690. Lvs. spreading and large, fleshy, 

 deep green; Ifts. obovate, more or less notched: fls. 

 bright rose-red. Cape. B.R. 1585. B. 1:25. R.H. 

 1858, p. 120. Gn. 10, p. 159; 37:508. 



18. cernua, Thunb. (Bolbdxalis cernua, Small). 

 BERMUDA BUTTERCUP. Fig. 2691. Lvs. ascending, not 

 very large or fleshy, often purplish or mottled; Ifts. 

 obcordate: fls. bright yellow. Cape. L.B.C. 12:1154. 

 B.M. 237. A form with double fls. is var. plena, F.S. 

 19:1964. 



cc. Fls. solitary on bractless or 2-bracted peduncles. 

 D. Lfts. broad, notched: nearly acaulescent. 



19. variabilis, Jacq. (0. grandiflbra, Jacq. 0. Idxula, 

 Jacq. 0. purpurea Idxula, Hort. O. rigidula, Jacq. 0. 

 suggilata, Jacq. 0. variabilis albiflora, Lindl.). Hairy: 

 Ivs. petioled, rather fleshy, often purplish: fls. large, 



2689. Oxalis enneaphylla. ( X Yz) 



white or shaded with rose, yellow at base. Cape. B.M. 

 1683. B.R. 1505. A form with deep rosy fls. is var. 

 rubra, Jacq. (0. purpurea, Jacq. O. speciosa, Jacq. 

 O. venusta, Lowe). B.M. 1712. A white form, var. 

 alba, Hort., is grown. 



DD. Lfts. narrow or small: leafy-stemmed. 

 20. versicolor, Linn. (O. elongata, Jacq.). Glandular: 

 Ivs. petioled, clustered at top of the st.: Ifts. linear- 



