Oxalis 



OXALIDACEAE 



627 



50 



Map 1296 



Oxalis florida Sa It s b 



50 

 Map 1297 



Oxalis europaea Jordan 



Pubescence toward the base of the stem loosely crisp, tawny; capsules 

 strigose toward the apex, glabrous below, rarely strigose throughout, 



9-15 mm long, gradually pointed; sepals 4-4.5 mm long 5. 0. florida. 



Flowers cymose; fruiting pedicels not deflexed but sometimes widely spreading; 

 capsules with loose spreading viscid hairs or nearly glabrous. 

 Upper surface of leaflets glabrous. 



Pubescence of pedicels appressed 6. 0. europaea. 



Pubescence of pedicels spreading, usually viscid. 



Stem nearly or quite glabrous 6a. O. europaea f. cymosa. 



Stem villous 6b. O. europaea f. villicaulis. 



Upper surface of leaflets more or less pubescent. 



Pubescence of pedicels appressed, scarcely viscid; stems with ascending 



pubescence or glabrate 6c. 0. europaea var. Bushii f. subglabrata. 



Pubescence of pedicels spreading, usually viscid; stems villous 



6d. O. europaea var. Bushii f . vestita. 



1. Oxalis violacea L. Violet Wood Sorrel. Map 1292. In woods in 

 dry, sandy soils or sandy, clay soils with little competing vegetation and 

 usually in wind swept, open places with little humus in the soil. Often on 

 the border of woods, along roadsides, and less frequently in abandoned 

 fields. Rarely in rich soil or in moist situations. 



More or less local throughout the state although there are no records 

 from the northeastern counties. 



Eastern Mass. to Minn, and southw. 



la. Oxalis violacea var. trichophora Fassett. (Rhodora 39: 378. 1937.) 

 Map 1293. This is a southern form with the habitat of the species and 

 occurring with it. 



Vt., Pa., Ind., to Mo., southw. to Va. and Ark. 



2. Oxalis grandis Small. (Xanthoxalis grandis Small.) Great Yellow 

 Wood Sorrel. Map 1294. Infrequent in wooded ravines and rarely in 

 abandoned fields. 



Pa. to 111., southw. to Ga. and Ala. 



3. Oxalis repens Thunb. (Xanthoxalis corniculata (L.) Small.) A 

 weed introduced into greenhouses throughout the state. It has not often 



