434 



OXALIDACEAE. 



Vol. II. 



7. Xanthoxalis interior Small. Mid- 

 land Wood-sorrel. Fig. 2671. 



X. interior Small, FI. SE. U. S. 668. 1903. 



Stems usually solitary, i°-2° tall, hirsute; 

 leaflets bright green throughout, io"-i5" wide, 

 or some of them smaller, copiously strigillose, 

 somewhat ciliate ; cymes normally dichoto- 

 mous, with some of the branches more or 

 less suppressed, commonly raised above the 

 leaves by the elongating peduncles ; pedicels 

 strigillose; sepals oblong to oblong-lanceolate, 

 about 2" long, ciliate at the tip ; petals 3"-4i" 

 long, light yellow ; longer filaments sparingly 

 ciliate above ; capsules rather slender, 4"-$" 

 long, on erect or ascending pedicels. 



In woods and on partly shaded hillsides, Mis- 

 souri and Arkansas. Juiy-Oct. 



6. Xanthoxalis Brittoniae Small. 

 Britton's Wood-sorrel. Fig. 2670. 



Oxalis Brittoniae Small, in Britton, Man. 577. 



1 90 1. 

 X. Brittoniae Small, Fl. SE. U. S. 668. 1903- 



Plants often stoutish, loosely pubescent, 

 bright green. Stem sparingly leafy, 4'-;i6^ 

 tall, often branched ; leaves mostly i'-l' 

 broad; petioles filiform, sparingly villous; 

 leaflets broader than long, nearly glabrous ; 

 peduncles about twice as long as their sub- 

 tending petioles; cymes dichotomous or 

 the primary branches suppressed, thus 

 more umbel-like ; sepals elliptic to nar- 

 rowly oblong, ii"-2" long; corolla light 

 yellow, 5"-7i" wide; filaments glabrous; 

 styles glabrous ; capsules columnar, abruptly 

 acuminate, 7"-io" long. 



In woods and fields, Massachusetts to Mis- 

 souri and Florida. May-July. 



8. Xanthoxalis Priceae Small. Price's 

 Wood-sorrel. Fig. 2672. 



O. Priceae Small, Bull. Torr. Club 25 : 612. 1898. 

 X. Priceae Small, FI. SE. U. S. 669. 1903. 



Plants mostly villous, deep green. Stems early 

 decumbent, 4-12' long; leaves often numerous; 

 leaflets pale or glaucescent beneath, ciliate ; pe- 

 duncles sometimes slightly longer than the peti- 

 oles; sepals linear or nearly so, 3"-4" long, pubes- 

 cent at the base and tip ; corolla deep chrome- 

 yellow, 7"-io" broad ; petals pubescent without ; 

 styles copiously villous ; capsules stout, columnar, 

 S"-7¥' long. 



On rocky hillsides and in open woods, Kentucky 

 to Alabama. June-Nov. 



Xanthoxalis recurva (Ell.) Small, admitted into 

 our first edition, is not definitely known to occur in 

 our range. 



