MEADOW-FOAM FAMILY 49 



7. Limnanthes alba Hartvv. White Meadow-foam. Fig. 3076. 



Limnanthes alba Hartw. ex Benth. PI. Hartw. 301. 1848. 



Floerkea alba Greene, Fl. Fran. 100. 1891. 



Limnanthes alba var. detonsa Jepson, Fl. Calif. 2: 411. 1936. 



Stems much branched at the base, erect or ascending, 10-30 cm. long. Leaves 1-2-pinnatifid, 

 3-10 cm. long, sparsely long-villous or glabrous, the segments oblong or lanceolate; pedicels 2-10 

 cm. long ; sepals ovate-lanceolate, acuminate, 6-8 mm. long, usually villous with long white hairs ; 

 petals 10-15 mm. long, broadly obovate-cuneate, truncate or broadly emarginate, white; nutlets 

 4 mm. long, reddish brown, with low ridged tubercles. 



Wet places, Upper Sonoran Zone; Sierra Nevada foothills and Sacramento Valley and adjacent foothills 

 in the Coast Ranges, from Shasta County to Tuolumne County, California. Type locality: Sacramento Valley. 

 April-May. 



8. Limnanthes gracilis Howell. Slender Meadow-foam. Fig. 3077. 



Limnanthes gracilis Howell, Fl. N.W. Amer. 108. 1897. 



Plant glabrous throughout, the stems slender, simple or branched from the base, 8-40 cm. long. 



Leaves pinnate, 3-5 cm. long, the divisions ovate to linear-lanceolate, entire or the lower 3-parted ; 



sepals lanceolate, acuminate, 6 mm. long; petals white with yellowish base, oblanceolate, 12-14 



mm. long, truncate or broadly emarginate at apex; nutlets smooth or crowned with a few low 



tubercles. 



Wet ground, especially on serpentine outcrops. Upper Sonoran and Transition Zones; Rogue River region 

 near Grants Pass and Waldo, Oregon. Type locality: "wet rocks. Rogue River Valley and southward." March- 

 May. 



9. Limnanthes rosea Hartw. Rose-flowered Meadow-foam. Fig. 3078. 



Limnanthes rosea Hartw. ex Benth. PI. Hartw. 302. 1848. 



Floerkea rosea Greene, Fl. Fran. 100. 1891. 



Limnanthes rosea var. Candida Jepson, Fl. Calif. 2: 411. 1936. 



Stems much branched at the base, decumbent or ascending, 10-30 cm. long, glabrous. Leaves 

 5-10 cm. long, glabrous, once or twice pinnately dissected into narrow linear divisions; sepals 

 lanceolate, 7-8 mm. long ; petals 12-18 mm. long, white, veined with rose, and often tinged with 

 rose in age, broadly emarginate, villous toward the base; nutlets with high prominent tubercles 

 laterally ridged. 



Wet places. Upper Sonoran Zone; Sacramento Valley and the upper San Joaquin Valley, California. Type 

 locality: upper Sacramento Valley. April-May. 



10. Limnanthes pumila Howell. Dwarf Meadow-foam. Fig. 3079. 



Limnanthes pumila Howell, Fl. N.W. Amer. 108. 1897. 



Limnanthes Bellingeriana M. E. Peck, Proc. Biol. Soc. Wash. 50:93. 1937. 



Plant glabrous throughout, the stems simple to sparingly branched near the base, 5-10 cm. 



high. Lower leaves 3-4 cm. long, pinnately divided into 5-9 linear-lanceolate divisions, these 



entire or the lower sometimes 3-lobed; sepals lanceolate to ovate-lanceolate, 6-8 mm. long; petals 



white, about equaling the sepals, oblong, obtuse, not emarginate at apex ; nutlets ovoid, rugose 



below, crowned with short conic processes at apex. 



Moist ground. Transition Zone; Pinehurst and Table Rock, Jackson County, Oregon. Type locality: top of 

 Table Rock. March-May. 



11. Limnanthes floccosa Howell. Woolly Meadow-foam. Fig. 3080. 



Limnanthes floccosa Howell, Fl. N.W. Amer. 108. 1897. 



Stems sparingly branched, 3-7 cm. long, decumbent, sparsely pilose. Leaves 2-5 cm. long, pin- 



natifid, sparsely pilose ; sepals ovate, acuminate, 7-8 mm. long, densely long-villous, especially on 



the inner surface ; petals not exceeding the sepals, white, truncate ; nutlets obovoid, the upper 



half beset with acute white processes. 



Wet places, Upper Sonoran Zone; southern Oregon, in Jackson and Josephine Counties. Type locality: 

 on grravelly plains, Jackson County, Oregon. April-May. 



Limnanthes Macounii Trelease, Mem. Bost. Soc. Nat. Hist. 4: 8.S. 1887. Plants glabrous; flowers 4- 

 merous; petals 3-4 mm. long, white or cream-colored, erose-retuse; nutlets with prominent conical tubercles. 

 This unique species is known only from the type locality on Vancouver Island, British Columbia. It is possible 

 that it may be found in adjacent Washington. 



2. FLOERKEA Willd. Neue Schrift. Ges. Nat. 3: 448. 1801. 



Low slender glabrous annuals, the stems simple or branched at the base. Leaves pin- 

 nately dissected. Flowers solitary on axillary, arcuate, recurved pedicels. Sepals 3, 

 slightly imbricated in the bud, spreading in fruit. Petals 3. much shorter than the sepals, 

 open in aestivation. Stamens 6. Carpels 2 or 3 ; style 2-3-cleft at the apex. [Name in 

 honor of H. G. Floerke, 1790-1835, a German botanist.] 



A monotypic North American genus. 



