108 LIMNANTHACE. LIMNANTHES. 
Orper XVIII. LIMNANTHACEZ Lindl. Nat. Syst. ed. 2, 142. 
Glabrous annual herbs with pungent juice, pinnately dis- 
sected alternate leaves without stipules and pale flowers. Sep- 
als 3-5, valvate in the bud, united at base, persistent. Petals 
3-5, withering-persistent. Stamens twice as many as petals 
and inserted with them upon a somewhat perigynous disk, all 
antheriferous, filaments distinct, those opposite the sepals hay- 
ing a small gland at the base on the outside: those opposite the _ 
petals usually shorter: anthers roundish introrse. Ovary con- 
sisting of 2-5 distinct 1-ovuled carpels opposite the sepals, the 
styles rising from the centre of each carpel and united into one 
nearly to the top: stigmas simple. Carpels becoming semi- 
drupaceous tuberculate nutlets. Seeds erect, anatrepous, with- 
out. albumen. Embryo with very large cotyledons and very 
short radicle. 
1. Limnanthes. Sepals, petals and carpels normally 5: stamens 10. 
2. Flerkea. Sepals, petals and carpels normally 3: stamens 6. 
1 LIMNANTHES R. Br. Lond. & Edinb. Phil. Mag. 1833 ii, 70. 
Low annuals with estipulate pinnatifid leaves and showy white, 
yellowish or rose-color flowers, solitary on lateral and terminal 
peduncles: growing in water or wet places. Calyx deeply 5- 
parted. Petals 5, persistent. Glands 5, alternating with the pet- 
als. Stamens10. Style 5-cleft at the apex. Ovary with solitary 
ascending ovules. Carpels distinct, subglobose, at first fleshy, at 
length hard and indehiscent, separating from the axis. 
L. Douglasii R. Br. 1. c. Glabrous throughout, diffusely branched 
from the base: the succulent stems 6-8 inches long: leaves pinnate, the 
leaflets incisely lobed or parted into linear acute lobes: peduncles at 
length 2-4 inches long: sepals lanceolate acute, 3 or 4 lines long: petals 
obovate, emarginate, 6-8 lines long, white, with yellow base: style very 
slender 3-4 lines long: seeds densely covered with coarse obtusish tubercles. 
Umpqua valley, Oregon. | 
L. gracilis. Glabrous throughout, branching from the base, the slen- 
der stems 6-18 inches long: leaves pinnate, the ovate to ovate-lanceo- 
late or linear acute, leaflets entire or 3-parted: sepals lanceolate, acumi- 
nate, 3 lines long: petals oblanceolate, truncate or emarginate 6-7 lines 
long, white with yellowish base: fruit smooth or sparsely tuberculate. On 
wet rocks, Rogue River Valley and southward. 
L. rosea Hart. in Benth. Pl. Hartw. 301.  Glabrous, petals obovate 
and emarginate or obcordate, light rose-color or purplish below, villous 
within near the base: fruit strongly tuberculate. California, to be looked 
for on our southwest border. 
L. pumila. Glabrous, simple or sparingly branched near the base, 2-4 
inches high: leaves commonly bipinnate with trifoliolate pinne; pinules 
lanceolate to oblanceolate acute: sepals lanceolate acuminate 3-4 lines 
long: petals white, oblong entire, little if at all longer than the sepals: 
stamens about half the length of the petals: carpels ovoid, rugose below, 
crowned with short-conic processes. On top of Table Rock, Jackson 
County, Oregon. 
L. floccosa. Flocecose-villous, stems simple or sparingly branched 
