52 NORTH AMERICAN FLORA [Volumb 25 



5. Xanthoxalis corniculata (L.) Small, Fl. SE. U. S. 667. 1903. 



•s corniculaia L,. Sp. PI. 435. 1753. 

 'Oxalis repens Tliunb. Oxal. 16. 1781. 

 Ova/is Pilli in: Jacq. Oxalis Monogr. 28. 1794. 

 ( ) i alis jamaicensis Macfad. Fl. Jam. 1 : 182. 1837. 

 ? Oxalis herpestica Hchleclit. LJnnaea27: 525. 1856. 

 Oxalis corniculata pubescens Griseb. Fl. Brit. W. Ind. 133. 1859. 



Sterns branched at the base, the branches creeping, 0.5-4 dm. long, or more, loosely 

 pubescent, the hairs often few and scattered; leaflets deep-green, the blades 5-12 mm. 

 broad or sometimes larger, ciliate and commonly with scattered hairs on both surfaces ; 

 peduncles as long as the petioles or longer ; pedicels strigillose, variable in length, but 

 often relatively short ; sepals mostly 3-4 mm. long ; petals light- or pale-yellow, 7-10 mm. 

 long ; filaments glabrous ; capsules columnar, 8-18 mm. long, finely pubescent, rather 

 abruptly narrowed at the apex. 



Type locality : Italy. 



Distribution : Ontario to California, Bermuda, Florida, and tropical America ; also in the 

 tropics generally and Europe. 



Illustrations: Jacq. Oxalis Monogr. pi. 5; Fl. Dan. pi. 1753 ; Engl. Bot. pi. 1726; Sibth. 

 Fl. Graeca/W. 451; Britt. & Brown, 111. Fl. /'. 2252. 



6. Xanthoxalis Langloisii Small, Fl. SE. U. S. 667. 1903. 



Oxalis corniculata microphylla Oriseb. Fl. Brit. W. Ind. 133. 1859. Not O. microphylla Poir. 1816. 



Plants similar to those of A', corniculata in habit, but usually smaller in all of their 

 parts ; leaflets pale- or light-green, the blades 3-10 mm. broad, somewhat ciliate and more or 

 less pubescent on both surfaces ; peduncles about as long as the petioles or longer ; pedicels 

 strigillose; sepals 2.5-4 mm. long; petals light-yellow, 5-8 mm. long; longer filaments 

 pubescent; capsules columnar, 9-14 mm. long, minutely pubescent, rather gradually nar- 

 rowed at the apex. 



Type locality' : St. Martinsville, Louisiana. 



Distribution : Tennessee to Florida and Texas, and in Cuba. 



7. Xanthoxalis filipes Small, Fl. SE. U. S. 667. 1903. 



Oxalis fil, pes Small ; Britt. & Brown, 111. Fl. 2 : 349. 1897. 



Steins erect, or decumbent at the base, 1-3 dm. tall, usually very slender and wiry, 

 finely pubescent, often sparingly so, and with the hairs more appressed on the upper parts 

 than on the lower; leaflets bright-green, the blades 4-8 mm. broad or sometimes slightly 

 wider, minutely strigillose, or glabrous in age ; peduncles as long as the petioles or longer ; 

 pedicels strigillose, refracted at maturity ; sepals 3-4 mm. long ; petals light- or pale-yellow, 

 5-9 mm. long; longer filaments pubescent ; capsules slender, 8-13 mm. long, minutely but 

 closely pubescent, more abruptly narrowed at the apex than those of X. Brittoniae . 



T\'pe locality : Falls of the Yadkin River, Stanley County, North Carolina. 



Distribution : District of Columbia to Missouri and Georgia. 



Illustration : Britt. .X Brown, 111. Fl./. 2253. 



8. Xanthoxalis Brittoniae Small, Fl. SE. U. S. 668. 1903. 



Oxalis Brittoniae Small, in Britton, Man. 577. 1901. 



Stems erect or spreading, 1-4 dm. tall, mostly rather fleshy, loosely pubescent, often 

 finely hirsute below, but commonly sparsely pubescent in age, the hairs more appressed 

 above ; leaflets bright-green, the blades mostly 10-16 mm. broad, commonly slightly strigil- 

 lose and ciliate ; peduncles longer than the petioles ; pedicels strigillose, not refracted at 

 maturity; sepals 3-4 mm. long; petals light-yellow, 5-10 mm. long; longer filaments 

 pubescent; capsules rather slender, 8-12 mm. long, minutely and sparingly pubescent, 

 gradually tapering at the apex. 



Type locality : Staten Island, New York. 



Distribution : Massachusetts to Missouri and Florida. 



9. Xanthoxalis macrantha (Trel.) Small, Fl. SE. U. S. 667. 1903. 



Oralis corniculaia (?) macrantha Trel. Mem. Bost. Soc. Nat. Hist. 4: 88. 1888. 

 Oxalis macrantha Small, Bull. Torrey Club 23: 268. 1896. 



Stems erect or ultimately decumbent, 1-4 dm. tall, often rather conspicuously elongate, 

 strigillose, commonly densely so on the lower part, especially when young ; leaflets deep- 



