668 OXALIDACEAE 
accompanied by several drooping buds : pedicels strigillose : sepals oblong to linear-oblong, 
3-4 mm. long, ciliate nearly all around: petals 9-12 mm. long, pale yellow: longer fila- 
ments glabrous: capsules rather stout, 8-10 mm. long. [Oxalis Bushii Small. ] 
In dry soil or thickets, Massachusetts, Missouri, Georgia and Arkansas. Spring and summer. 
8. Xanthoxalis rüfa Small. Stems usually solitary, sometimes on elongated root- 
stocks, 1.5-4 dm. tall, loosely pubescent : leaves usually numerous : leaflets reddish or pur- 
plish, the blades 8-20 mm. wide, sparingly strigillose or glabrous, at least at maturity, 
except the ciliate margins : cymes dichotomous but the primary branches manifestly short- 
ened, maturing several flowers at a time: pedicels strigillose, conspicuously short : sepals 
oblong, linear-oblong or oblong-lanceolate, 3-4 mm. long, ciliate at the tip, otherwise 
nearly glabrous: petals 7-10 mm. long, rather bright yellow: longer filaments glabrous : 
capsules stout, 7-9 mm. long, on erect or spreading pedicels. [Oxalis rufa Small. ] 
In damp soil or woods, Massachusetts to Minnesota and Georgia. Spring to fall. 
9. Xanthoxalis colórea Small. Stems commonly tufted on slender woody rootstocks, 
erect or nearly so, villous: leaflets purple or purple on both sides of the green midrib, 4-11 
mm. broad, usually with a few scattered hairs on the surfaces, and more or less ciliate: 
cymes umbel-like, the peduncles scarcely overtopping the leaves: pedicels strigillose : 
sepals oblong to lanceolate or linear-lanceolate, 3-4 mm. long, ciliate mainly at the apex 
and sparingly so along the margins: petals 8-11 mm. long, light yellow: longer filaments 
ciliate above: capsules relatively slender, 9-12 mm. long, on more or less reflexed 
pedicels. 
In woods, North Carolina to Georgia and Mississippi. Spring and summer. 
10. Xanthoxalis recúrva (Ell.) Small. Stems mostly tufted on the rootstocks, 1-3.5 
dm. tall, villous: leaflets bright green, the blades 6-11 mm. wide, glabrous or nearly so, 
except the margins: cymes umbel-like, the peduncles usually much overtopping the leaves: 
pedicels strigillose : sepals oblong to linear-lanceolate, 4-5.5 mm. long, ciliate nearly all 
around: petals 11-15 mm. long, golden yellow : longer filaments ciliate at least above: 
short styles recurved during anthesis : capsules rather slender, 11-13 mm. long, on reflexed 
pedicels. [Ozalis recurva Ell. ] 
In dry or rocky soil, Missouri to North Carolina, Florida and Mississippi. Spring and summer. 
11. Xanthoxalis Brittóniae Small. Stems solitary or tufted on slender woody root- 
stocks, 1-4 dm. long, erect or spreading, loosely hairy: leaflets bright green, 6-14 mm. 
wide, commonly a little strigillose and ciliate: cymes dichotomous when well developed, 
often slightly raised above the leaves on the elongating peduncles: pedicels strigillose: 
sepals oblong to lanceolate, 3.5-5.5 mm. long, sparingly ciliate all around: petals 5-10 
mm. long, light yellow : longer filaments pubescent above : short styles not recurved at 
anthesis : capsules slender, 7-12 mm. long, on reflexed pedicels. [Oxalis Brittoniae Small. 
In woods and fields or on hillsides, New York to Missouri and Florida. Spring and summer. 
12. Xanthoxalis intérior Small. Stems usually solitary, 3-6 dm. tall, villous : 
leaflets bright green throughout, the blades 20-30 mm. wide, or some of them smaller, 
strigillose, somewhat ciliate: cymes normally dichotomous, with some of the branches 
more or less suppressed, commonly raised above the leaves by the elongating peduncles : 
pedicels strigillose : sepals oblong to oblong-lanceolate, about 4 mm. long, ciliate at the 
tip: petals 6-9 mm. long, light yellow : longer filaments sparingly ciliate above: capsules 
rather slender, 8-10 mm. long, on erect or ascending pedicels. 
In woods or on partly shaded hillsides, Missouri and Arkansas. Summer and fall. 
13. Xanthoxalis grandis Small. Stems commonly solitary on more or less elon- 
gated rootstocks, 3-12 dm. tall, sparingly or loosely pubescent with spreading hairs : l d 
lets bright green, and brown around the margins, the blades 25-40 mm. wide, ciliate, an 
often strigillose along the nerves beneath : cymes dichotomous, with some of the branches 
suppressed, usually not projecting much beyond the leaves : pedictls strigillose : sepa s 
oblong, narrowly oblong or ovate-oblong, 4.5-6 mm. long, ciliate at the tip and for su 
distance below it: petals deep yellow, 13-18 mm. long: longer filaments ciliate : capsules 
stout, 7-10 mm. long on erect or spreading pedicels. [Oxalis grandis Small.) 
On shaded banks, Pennsylvania to Indiana, Georgia and Alabama. Summer and fall. 
14. Xanthoxalis cymdsa Small. Stems solitary or few together, 2-11 dnr: = 
loosely pubescent: leaflets bright or deep green, the blades 10-27 mm. wide, near ed 
glabrous or sparingly strigillose about the nerves, especially beneath and cni S 
dichotomous, commonly raised above the leaves by the elongating peduncles : p nus 
villous : sepals oblong to oblong-lanceolate, 3-4 mm. long, ciliate at the apex: petals = 
yellow, 7-10 mm. long: longer filaments glabrous : capsules slender, 10-16 mm. long, 9 
erect or spreading pedicels.  ( Ozalis cymosa Small. ] 
In moist or shaded soil, Ontario to Michigan, Florida, Nebraska and Texas. Spring to fall. 
