Part 1, 1907] OXALIDACEAE 53 



or bright-green, the blades 7-14 mm. wide, glabrous or with scattered hairs on both sides 

 and often ciliate ; peduncles mostly much longer than the petioles ; pedicels strigillose, 

 refracted at maturity; sepals 5-6 mm. long; petals golden-yellow, 10-20 mm. long; 

 longer filaments pubescent ; capsules columnar, stoutish, 10-14 mm. long, tomentulose, 

 gradually narrowed into a long beak. 



Type locality : Arkansas. 



Distribution : Georgia to Arkansas, Florida, and Mississippi. 



10. Xanthoxalis interior Small, Fl. SE. U. S. 668. 1903. 



Stems erect, 3-6 dm. tall, villous, usually densely so; leaflets green, the blades 20-30 

 mm. broad, or some of them smaller, copiously strigillose and ciliate ; peduncles longer 

 than the petioles, sometimes conspicuously elongate ; pedicels strigillose, not refracted ; 

 sepals 3.5-4 mm. long; petals light-yellow, 6-9 mm. long; longer filaments pubescent; 

 capsules columnar, slender, 8-12 mm. long, finely pubescent, gradually narrowed into the 

 short beak. 



Type locality - : Benton County, Arkansas. 

 Distribution : Missouri and Arkansas. 



11. Xanthoxalis colorea Small, Fl. SE. U. S. 668. 1903. 



Stems erect or nearly so, 1-3.5 dm. tall, arising from slender rootstocks, finely villous ; 

 leaflets purple or red, but sometimes with a green midrib or center, the blades 4-13 mm. 

 broad, usually with scattered hairs on both surfaces and more or less ciliate ; peduncles 

 much longer than the petioles ; pedicels strigillose, refracted at maturity ; sepals 4-5 mm. 

 long at maturity ; petals light-yellow, 8-11 mm. long ; longer filaments pubescent ; capsules 

 columnar, rather slender, 11-16 mm. long, or rarely shorter, minutely pubescent or nearly 

 glabrous at maturity, gradually narrowed at the apex. 



Type locality : Stone Mountain, Georgia. 

 Distribution : North Carolina to Florida and Mississippi. 



12. Xanthoxalis recurva (Ell.) Small, Fl. SE. U. S. 668. 1903. 



Oxalis recnrva Ell. Bot. S. C. & Ga. 1 : 526. 1821. 



Stems erect, 1-2 dm. tall, or rarely taller, villous, arising, often thickly so, from hori- 

 zontal often much-branched rootstocks ; leaflets green, the blades 6-13 mm. broad, glabrous 

 or nearly so, at least in age, except the ciliate margins ; peduncles much longer than the 

 petioles, usually elevating the cyme high above the rest of the plant ; pedicels strigillose, 

 refracted in fruit; sepals 4-5.5 mm. long at maturity; petals golden-yellow, 12-15 mm. 

 long ; longer filaments pubescent ; capsules columnar, rather slender, 11-13 mm. long, spar- 

 ingly pubescent, gradually narrowed at the apex. 



Type locality' : Near Charleston, South Carolina. 



Distribution : North Carolina to Florida and Mississippi, and perhaps northward in the 

 Mississippi Valley. 



Illustration : Britt. & Brown, 111. Fl./. 2255. 



13. Xanthoxalis Suksdorfii (Trel.) Small. 



O.ralis pumila Nutt.; T. & G. Fl. N. Am. 1 : 212. 1838. Not O.pumila Urv. 1829. 

 Oxalis Suksdorjii Trel. Mem. Bost. Soc. Nat. Hist. 4 : 89. 1888. 



Stems decumbent or reclining, 1-3 dm. tall, more or less villous, often sparingly so, 

 arising from slender, sparingly branched rootstocks ; leaflets bright-green, the blades 13-26 

 mm. broad, with scattered hairs on both surfaces and ciliate ; peduncles about as long as 

 the petioles or longer; pedicels strigillose, refracted in fruit; sepals 4.5-6 mm. long at 

 maturity; petals bright-yellow, 12-1S mm. long; longer filaments pubescent; capsules 

 oblong, very stout, minutely but closely pubescent, abruptly narrowed at the apex. 



Type locality : Oregon. 

 Distribution : Oregon and California. 



