OXALIDACE.E. (wOOD-SORREL FAMILY.) 65 



5. L. rigidum, Pursh. Stem simple or sparingly branched (6'- 12' 

 high); leaves narrow-linear; flowers few, racemose, yellow; sepals acute, 

 glandular on the margins; styles united to the top; capsule globose. — 

 Miami, South Florida (Gurber). 



Order 28. OXALIDACE^E. (Wood-Sorrel Family.) 



Chiefly hei'bs, with soiu' juice, alternate compound leaves, and reg- 

 ular hypogynous decandrous flowers. — Sepals 5, imbricated in the 

 bud, persistent. Petals 5, convolute in the bud, deciduous. Stamens 

 more or less united. Styles 5, distinct. Ovary 5-celled. Capsule 5- 

 celled, the cells fe^Y-seeded. Seeds anatropous, pendulous. Embryo 

 straight in the axis of fleshy albumen. Cotyledons flat. 



1. OXALIS, L. WoOD-SoRREL. 



Capsule 5-lobed ; tlie cells loculicidally dehiscent on the back, 1 - few- 

 seeded. Seed-coat loose and separating — Leaves 3-foliolate- Leaflets 

 obcordate. 



1. O. violacea, L. (Purple Wood-Sorrel.) Stemless ; root tuber- 

 ous ; scapes umbellately 4 - 6-flowered ; flowers purple, nodding. — Rich 

 woods, West Florida to North Carolina, and westward. May -June. — 

 Scapes and petioles 5' - 9' high. 



2. O. AcetOSella, L. (White Wood-Sorrel.) Stemless ; root creep- 

 ing ; scape l-flowered ; flower white, veined with red. — Mountains of North 

 Carolina, and northward. June. — Scape and petioles hairy, 2' - 5' high. 



3. O. grandis, Small. Annual; stem simple, smooth or villous, I°- 2" 

 high; leaves exstipulate, the large {\'-2' wide) leaflets margined with 

 brownish purple; flowers yellow, umbellate or cymose, 5"- 7" long, tri- 

 morphous. — Alabama (Mohr), and northward. May. 



4. O. COrnieulata, L. (Yellow Woon-SoRREL.) Perennial, appressed- 

 hairy ; stems creeping; leaves small, minutely stipulate; peduncles 1 -2- 

 flowered ; flowers yellow, 2" -4" long; .styles as long as the longer stamens; 

 capsule many-seeded. — Cultivated ground. Introduced. 



Var. macrantha, Trelease. Perennial, villous; peduncles 3-7-flowered, 

 longer than the leaves; flowers 3"- 6" long, trimorphous. — Dry sandy soil 

 near the coast, Georgia, and westward. April -IMay. 



Var. strleta, Sav. Annual, smoothish, stem erect, 6'- 12' high, at 

 length much branched ; peduncles 3-9-flowered, twice as long as the leaves; 

 stipules none; flowers 2" -3" long; st^ies as long as the stamens; capsule 

 short, few-seeded — Waste and cultivated ground. April -May. 



5. O. recurva, Ell. Pubescent, mostly simple, 4'- 8' high; leaves 

 small, shorter than the 2 -6-flowered peduncles, petals obovate, 2-3 times as 

 long as the calyx ; styles shorter than the stamens, recurved. — Cultivated 

 aud waste ground, North and South Carolina. April - May. 



6 



