FLCEHKIA. OXALIDACE.E. 109 



OXALI8. 



near the base, 1-3 inches high, recurving; leaves pinnate with linear or 

 lanceolate pinnae : flowers white on short slender 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 FIAERKEA 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 8-parted. persistent. Petals 3, alternate with as many 

 glands, open in the hud, withering-persistent. Stamens G, 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 the 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, Oregon to 

 California, Illinois, Canada and the New England States. 



ODRER XIX. OXALIDACE-E Lindl. Nat. Syst. eel. 2, 140. 



Herbs, rarely shrubby, with acid juice, trifoliolate or pin- 

 nate leaves and variously 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, iu- 

 trorse, often reflexed and appearing extrorse, Ovary of 5 

 united carpels with distinct styles and capitate or penicillate 

 or sometimes 2-lobed stigmas. Capsule usually membranace- 

 ous, o-lobed and 5-celled, the capsule at length mostly separa- 

 ble to 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 

 bread 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 7 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 2 several in each 

 cell, pendulous the outer fleshy aril-like coat at length split- 



