OXALIDACEAE. 



197 



1. lonoxalis Martiana (Zucc.) 

 J. K. Small. MARTIUS' PURPLE 

 WOOD-SORREL. (Fig. 217.) Scapes 

 villous, 1 high or less, as long as the 

 leaves or longer; bulb-scales 3-ribbed. 

 Leaflets 3, broadly obovate-obcordate, 

 l'-2i' broad, broadly cuneate at the 

 sessile base, somewhat pubescent, their 

 lobes rounded, the petioles loosely 

 villous; cymes several-many-flowered, 

 compound; pedicels i'-li'long; sepals 

 3" long or less; petals violet to rose- 

 purple, 6"-8" long; longer filaments 

 pubescent, the shorter mostly gla- 

 brous. 



A pernicious weed in cultivated 

 grounds, difficult to eradicate. Natural- 

 ized. Native of Brazil. Naturalized in 

 the southern United States and in the 

 West Indies. Flowers from autumn to 

 spring. [Oxalis riolacca of Lefroy and 

 of Reade ; Oxalis Martiana Zucc.] known 

 locally as Sour-sop, as is the following 

 species. 



2. lonoxalis intermedia (A. 

 Rich.) J. K. Small. CUBAN PURPLE 

 WOOD-SORREL. (Fig. 218.) Scapes 

 1 high or less, glabrous or pubescent, 

 as long as the leaves or longer ; bulb- 

 scales several-ribbed. Leaflets 3, 

 much broader than long, sessile, their 

 lobes ovate, obtuse, glabrous above, 

 more or less pubescent beneath, the 

 petioles sparingly pubescent; cymes 

 simple, 5-12-flowered; pedicels gla- 

 brous, 5"-10" long, very slender; 

 sepals ovate, 2 "-3" long; petals 

 violet, 5'' 7" long; longer filaments 

 very pubescent, the shorter ones 

 ; lightly so. [Oxalis intermedia A. 

 Richard.] 



Superabundal as a weed in fields 

 between Castle Harbor and Harrington 

 Sound, 1012. Native of Cuba. Natural- 

 ized in the Bahamas, St. Croix, Guade- 

 lupe and Martinique. Flowers from 

 autumn to spring. 



3. XANTHOXALIS J. K. Small. 



Annual or perennial caulescent herbs, with rootstocks. Leaves alternate; 

 stipules obsolete; blades palmately 3-foliolate; leaflets broadly obcordate, nearly 

 sessile. Flowers perfect, heterogonous or homogenous. Sepals 5, narrow, imbri- 

 cated. Corolla yellow, sometimes with a darker eye. Petals 5, surpassing the 

 sepals, rounded or notched at the apex. Stamens 10 ; filaments glabrous or the 

 longer ciliate. Capsule more or less elongated, columnar or narrowed upward, 

 angled, 5- celled. Seeds several in each cavity, transversely ridged or tuberculate 



