626 



OXALIDACEAE 



Erodium 



o ' 5o 

 Map 1292 



xa lis violacea L. 



o~~ io 

 Map 1293 

 Oxa lis violacea 

 var. tnchophora Fassett 



established in a lawn about one and a half miles northwest of Bluffton, 

 Wells County. Specimens from La Porte and St. Joseph Counties have 

 been collected by Nieuwland. 



Nat. of Eu. ; Mass., Ont. to B. C, southw. to N. J., N. C, Nebr., and Utah. 



3927. ERODIUM L'Her. Storksbill 

 See excluded species no. 412, p. 1069. 



130. OXALIDACEAE Lindl. Wood Sorrel Family 



3936. OXALIS L. Wood Sorrel 



[Wiegand. Oxalis corniculata and its relatives in North America. 

 Rhodora 27: 113-130; 133-139. 1925.] 



Plants with a bulblike rootstock; acaulescent; flowers violet. 



Petioles of leaves glabrous l.O. violacea. 



Petioles of leaves glandular-pubescent la. 0. violacea var. tricfwphora. 



Plants without a bulblike rootstock; caulescent; flowers yellow, rarely greenish yellow 

 or green. 



Flowers 12-18 mm long; margin of leaflets usually purplish brown 2. O. grandis. 



Flowers 5-11 mm long; margin of leaflets not purplish brown. 



Stems creeping on the surface of the ground; stipules usually broad and brownish 



purple, subscarious 3. 0. repens. 



Stems erect or decumbent, often with creeping rootstocks; stipules oblong, nar- 

 rowly oblong, or obsolete. 

 Flowers in umbels, rarely subcymose or solitary; fruiting pedicels horizontal or 

 deflexed but the capsules erect; capsules finely and densely pubescent, some- 

 times with additional villous, viscid hairs, or strigose above and glabrous 

 below, or more rarely strigose throughout (0. florida). 

 Pubescence appressed or subappressed, whitish; capsules abruptly pointed, 15- 

 25 mm long; sepals (3.5) 4-7 mm long. 



Pubescence of capsule appressed with some longer, loose, viscid hairs 



4. 0. stricta. 



Pubescence of capsule appressed, not viscid. . .4b. 0. stricta var. piletocarpa. 



