OXALIDACEAE 747 
3. IONOXALIS Small. Erect herbs with coated bulbs, often producing 
clusters of bulblets. Leaf-blades palmately 3—10-foliolate: leaflets with tuber- 
cles in the apical sinus. Flowers usually borne in umbel-like cymes. Sepals 
erie at the apex. Petals violet, blue, red, or white.—About 120 species, 
natives of North America and South America. 
Inflorescence simple. 
Tubercles of the sepals confluent : blades of the leaflets obreniform 
1. I. violacea. 
TOR ai of the sepals distinct: blades of the leaflets obdel- 
oid. 2. I. intermedia. 
E ccn compound. 3. I. Martiana 
1. I. violacea (L.) Sm Plant 5-35 em. tall: leaflets 3; blades 1-2.5 em. 
wide: seape glabrous: "pale elliptic to pos -elliptie: petals rose-purple or 
rarely white: p ule 4— . long.— 
LET WOOD-SORREL.) Woods, E banks, 
A slopes, and ere various provinees, 
Fla. to Tex., Colo., and Me.—Spr.—fall. 
2. I. intermedia ^ Rich.) Small Plant 
dm. : ; bla : j 
wide: scape pubescent: sepals ovate to 
broadly elliptic: petals violet: capsule col- 
umnar, 6-7 mm. ns EE S pen. 
Fla.— es W. I.)—A1l yea 
3. I. Martiana (Zuce.) Sm Pla 
stout, 8—30 s n DE of p js 
lar rger than violacea: scape 
a a prets to 250917 ellip- 
: petals r dendi du often pale: c ue id narrowly ellipsoid, mostly 9-11 m 
long —Waste-places and cult. grounds, near dw ~ Coastal Plain, Fla. p 
C EO Nat. of trop. Am. and ¢ dais 
4. XANTHOXALIS Small. Herbs. Leaf-blades palmately 3-foliolate: 
leaflets not tubercled at the apical sinus. Flowers in umbel-like or dichotomous 
cymes. Sepals 5, the inner narrower than the outer ones. Filaments glabrous 
or the longer ones pubescent. Capsules elongate, erect.—About 50 species, of 
wide distribution —SoURGRASSES. YELLOW WOOD-SORRELS.—Oxalic-acid is quite 
evident to the taste in the tissues of these plants. 
Pedicels appressed- Bus 
Lon ger ap pee glabrou 
appressed- ai e A usually copiously so: capsule mbesen 
1. X. stricta. 
Stem loosely pubescent: often nearly glabrous : capsule 
a except in X. corni iculata. l 
Plants erect. 
ne o en in fruit: leaves oe -green. 2. X. Bushii. 
Cymes Cluster like in fruit: aves reddish or 
A. rufa. 
. X. corniculata. 
He oo 
nts spreading ir creeping. 
Longer filaments Bucs 
Petals glabrous 
Plant creep 5. X. Langloisii. 
Plant i p sometimes with decumbent branches. 
Stem pd but neither villous nar hirsute. 
al a pale- or light-yellow ; sepa A 
Gomes typically 1-flow ered: leaves Bn : 
ous leaflets small, mainly 4—8 
vide. X. filipes. 
P 
