FLOERKIA. _ OXALIDACE. 109 
' OXALIS. 
near the base, 1-3 inches high, recurving; leaves pinnate with linear or 
lanceolate pinnee: flowers white on short s!ender penduncles fascicled at 
the end of the stem or branches: sepals broadly lanceolate, acuminate 
densely villous within: petals oblong, 3-4 lines long not exceeding the 
sepals: stamens not more than % the length of the petals: carpels obovoid 
the upper half beset with white acuminate processes. On gravelly plains, 
Jackson county, Oregon to northern California. 
2 FLOXRKEA Willd. Neue Schr. Ges. Nat, Fr, Berl. iii, 448, 
Low smooth annual herbs with alternate dissected leaves with- 
out stipules and small flowers on axillary peduncles, Calyx 
deeply 3-parted. persistent. Petals 35, alternate with as many 
glands, open in the bud, withering-persistent. Stamens 6, styles 
3, united to near the apex. Ovaries 3, opposite the sepals, 1- 
ovuled, distinct, fleshy, becoming indehiscent 1-seeded nutlets, 
separating from the axis. 
F. proserpinacoides Willd. Act. Berol. iii, 448. Glabrous: stems weak, 
4-10 inches high sparingly branched from thé base: leaves pinnate, the 
lowest trifoliolate with lanceolate leaflets: the upper with more numerous 
linear filiform leaflets; sepals ovate-acute, about a line long, a little longer 
than the white petals: carpels globose, densely tuberculate. Under Ash 
trees in moist places about the mouth of the Willamette river, ilk ae to 
California, Illinois, Canada and the New England States. 
OprerR XIX.. OXALIDACEA® Lindl. Nat. Syst. ed. 2, 140. 
Herbs, rarely shrubby,with acid juice, trifoliolate or pin- 
nate leaves and yariously disposed regular flowers. Sepals 5, 
equal distinct or nearly so, persistent, imbricate in the bud. 
Petals 5, hypogynous, equal, unguiculate deciduous, spirally 
twisted in the bud. Stamens 10, hypogynous, more or less mon- 
adelphous: filaments subulate, those opposite the petals longer 
than the others: anthers short, attached by the middle, in- 
trorse, often reflexed and appearing extrorse, Ovary of 5 
united car pels with distinct styles and capitate or penicillate 
or sometimes 2-lobed stigmas. Capsule usually membranace- 
ous, 5-lobed and 5-celled, the capsule at length mostly separa- 
ble te the axis, opening by the dorsal suture, 1-12-seeded. 
Seeds anatropous, with a loose fleshy testa which bursts elastic- 
ally when the seeds are ripe. Embryo. straight, as long as the 
firm fleshy albumen with a rather long radicle. Cotyledons 
broad and foliaceous. 
1 OXALIS L. Gen. n. 582. 
Herbs, rarely shrubby, with trifoliolate or pinnate leaves with- 
out stipules and perfect, regular flowers. Sepals 5, distinct or 
united at the very base, imbricate in the bud. Petals 5, convo- 
lute and twisted in the bud. Stamens 10, the filaments some- 
what dilated and united below in 2 sets of unequal length.-all 
antheriferous. Capsule columnar or ovoid, beaked with the 5 
_ styles, 5-celled, dehiscing loculicidally, the valves remaining at- 
tached by the ‘partitions to the axis. Seeds Y2-several in each 
cell, pendulous the outer fleshy aril-like coat at length split- 
