1182 



OXALIS 



OXALIS 



A. Plants without bulbs or scaly 

 rootstocks : stem usually elon- 

 gated, leafy. 



B. Lfts. palmately placed, not 

 separated, notched. 



c. Color of fls. rosy 1. rosea 



cc. Color of fls. chiefly yellow. 

 D. Peduncles shorter than 



Ivs 2. corniculata 



DD. Peduncles longer than Ivs. 



E. Foliage clustered 3. Valdiviensis 



EE. Foliage scattered 4. Ortgiesi 



BB. Lfts. pinnately placed, some- 

 what separated, entire 5. delicata 



AA. Plants with underground stems 

 thickened and scaly at end, 

 forming a sort of tuber: stem 

 scarcely any: Ivs. of 3 Ifts. 

 B. Fls. white, with rosy veins. 



c. Lfts. obcordate 6. Acetosella 



cc. Lfts. broadly triangular, 



scarcely notched 7. Japonica 



BB. Fls. rosy, lilac, or white 8. rubra 



AAA. Plants from loose, scaly, ovoid 

 bulbs: stem scarcely any: fls. 

 iimbelled on elongated scapes. 

 American species. 

 B. Lfts. 3. 



c. Bulb composed of numerous 



small ones 9. Martiana 



cc. Bulb simple 10. violacea 



BB. Lfts. 4 or 3 11. tetraphylla 



BBB. Lfts. 5-10 12. lasiandra 



AAAA. Plants from hard, mostly fusiform 



bulbs: Ifts. 3. Cape species. 

 B. Fls. umbelled : stems scarcely 

 any. 



c. Color of fls. rose 13. Bowiei 



cc. Color of fls. yellow 14. cernua 



BB. Fls. solitary on the peduncles. 

 c. Stem scarcely any : Ifts. 



broad 15. variabilis 



cc. Stem distinct, leafy: Ifts. 

 narrow. 



D. Lvs. nearly sessile 16. birta 



DD. Lvs. mostly long-stalked. 17. versicolor 



1602. Oxalis Ortgiesi. 



1. rdsea, Feuil. Stem elongated, erect: Ivs. scattered, 

 rather short-petioled ; Ifts. obcordate : fls. in open, 

 irregularly forked cymes on elongated axillary pedun- 

 cles, rather large, rosy, with deeper veins. Chile. B.M. 

 2830. B.R. 13:1123 (as O. floribunda). O. Simsii, 



Sweet, scarcely differs, except in its darker red fls. 

 Chile. B.M. 2415 (as O. rosea). 



2. corniculata, Linn. Slender, prostrate, often root- 

 ing, loosely hairy: Ifts. obcordate: fls. usually 2 to 3 

 together, small, yellow. A tropical form of this poly- 

 morphous species is universal as a greenhouse weed, 

 especially in Agave and Cactus tubs. 



Var. atropurpurea, Planch. (O.tropceololdes, Schlach- 

 ter). Ascending, tufted, with deep purple-red stems 

 and foliage. Sometimes used for beds or borders, and 

 for carpeting large tubs, etc. Eu. F. 8.12:1205; 19:1968. 

 R.H. 1897, p. 499. 



3. Valdivi6nsis, Barn. (O. Valdividna, Hort.). Short- 

 stemmed: Ivs. clustered, long-petioled; Ifts. obcordate: 

 fls. closely umbelled on erect, elongated peduncles, yel- 

 low, with reddish veins. Chile. 



4. Ortgiesi, Regel. Fig. 1602. Stem elongated, erect, 

 rather fleshy and usually reddish: Ivs. scattered, often 

 on long, colored petioles; Ifts. red below, cuneate, with 

 broad V-shaped notch at end: fls. very short-stalked, in 

 forked cymes on elongated peduncles, small, yellow, 

 with deeper veins. Peru. Gt, 1875:817. 



5. delicata, Pohl. Stem erect, elongated, slender, 

 branching : Ifts. ovate or lance-ovate, acute : fls. in 

 forked cymes on elongated peduncles, small, pale rose. 

 Brazil. 



6. Acetosella, Linn. WOOD SORREL. Rhizome slender, 

 the ends scarcely thickened, densely scaly: Ifts. obcor- 

 date, not orange-dotted: fls. solitary on the scapes, 

 white, with rosy veins. Eu., N. Amer. Gn. 47, p. 129. 

 While a charming plant for the wood-garden, this, which 

 is sometimes held to be the original Irish Shamrock, 

 scarcely enters into ordinary gardening. G.C. II. 

 25:685. 



7. Japonica, Franch. & Sav. Lfts. broadly triangular, 

 scarcely notched, truncate. Otherwise similar to the 

 last. Japan. 



8. rubra, St. Hil. Rhizome thickened at ends into 

 loosely toothed tubers, sometimes nearly an inch thick, 

 and often clustered: Ifts. obcordate, more or less hairy, 

 orange-dotted beneath : inflorescence mostly compound : 

 fls. numerous, umbelled, rosy, with deeper veins. Bra- 

 zil. Gn, 50, p. 511 (as O. floribunda). Usually cult, as 

 O. floribunda, which name properly belongs to the 

 next, and sometimes, but also erroneously, as O. arbo- 

 rea. A lilac-flowered form passes erroneously for O. 

 lilaclna, and a white form for O. arborea, var. alba or 

 O. alba ; and O. violacea and O. violacea var. alba of 

 the trade seem to be this species and its variety. 



9. Martiana, Zucc. (O. urbica, St. Hil. O. Upunc- 

 tata, Grah. O. floribunda, Lehm.). Bulbs composed of 

 numerous small ones: Ifts. obcordate, somewhat hairy, 



with a marginal row and some scattered dots of 

 orange color beneath : umbels usually compound: 

 fls. rose-purple. Trop. Amer. B.M. 2781; 3938. 

 By a misprint this is sometimes advertised as 

 O. maritima. 



10. violacea, Linn. Bulb simple: Ivs. rather 

 fleshy, glabrous: fls. in simple umbels, rose-vio- 

 let. Eastern U. S. B. M. 2215. Mn. 5:121.- 

 Scarcely useful, except for hardy borders, rock- 

 eries, etc., and transient. 



11. tetraphylla, Cav. (O. D6ppei, Lodd.). Lfts. 3 or 

 4, deltoid, truncately notched, each crossed by a pur- 

 plish band: fls. rather few, lilac to deep rosy. Mexico. 

 L.B.C. 8:790; 15:1500. G.M. 39, p. 403. Gn. 8, p. 43.- 

 Sometimes called O. esculenta, because of the large 

 fusiform roots beneath the bulbs. See Fig. 1601. 



]_. lasiandra, Zucc. Lfts. 5 to 10, oblong-spatulate, 

 not notched, several inches long, radiately pendent 

 about a reddish disk at end of petiole: fls. crowded, 

 rosy crimson. Mexico. B.M. 3896. 



13. Bdwiei, Herbert. Plant low: Ivs. large; Ifts. 

 rather fleshy, broadly obcordate, deep green: fls. large, 

 loosely clustered, bright rose-red. Cape. B.R. 19:1585. 

 B. 1:25. R.H. 1858, p. 120. Gn. 10, p. 159. 



14. cernua, Thunb. Fig. 1603. Lfts. broadly obcor- 

 date, deeply notched, often purplish: fls. large, com- 

 pactly clustered, bright yellow. Cape. L.B.C. 12:1154. 



