MEADOW FOAM FAMILY 411 



Var. Candida Jepson var. n. Petals pure white, filmy, not aging pink; nutlets irregularly 

 warty but apparently without the characteristic surface markings of the species. — (Petala 

 Candida, praetenua, non in aetate rubicundula; nuculae irregulariter verrucosae sed non quam 

 in specie summae notatae.) — Eolling plains, northeast of Madera, 350 to 400 feet, I. T. Walker 

 (type) ; Modesto, Bessie B. Silverthorn. Mar. 



Field note. — This was collected ten miles northeast of Madera, growing only in adobe vernal 

 pools which undoubtedly hold water for short periods after heavy rains. In such places (only 

 three or four were found) the individuals are growing as thickly as they can stand to the 

 exclusion of practically all other plants, making the little depressions appear at a distance as 

 if filled with purest snow. Unlike other Limnanthi there is no pungent or "cruciferous" taste. — 

 I. T. Walker, Mar. 10, 1925 (Jepson Corr. vol. 35). 



Eefs. — LiMNANTHES ROSEA Hartw. ; Benth. PI. Hartw. 302 (1848), type loc. "upper Sacra- 

 mento Valley," Hartweg 214 (more specifically near junction of the Yuba and Feather rivers, 

 cf. Erythea 5 :54) ; Jepson, Man. 592, fig. 588 (1925). FloerJcea rosea Greene, Fl. Fr. 100 (1891). 

 Var. CANDIDA Jepson. 



3. L. alba Hartw. Balsa Foam. Stem branching at or above the base, com- 

 monly erect, 5 to 8 inches high; young parts and buds more or less pilose, the calyx 

 white-woolly with long hairs; sepals rather broad; petals obovate, truncatish or a 

 little retuse, white, aging rose-pink, at least at apex, 5 to 6 lines long ; nutlets red- 

 dish-brown, prominently tuberculate, the tubercles composed of plates or strands 

 and thus more or less hollow or lattice-like. 



Rolling gravelly or clay plains or hills, open ground, 100 to 3300 feet : western 

 Colusa Co.; east side of the Great Valley from Shasta Co. to Tuolumne Co., and 

 bordering Sierra Nevada foothills. Apr.-May. 



Field note. — The plants are usually gregarious in low moist spots in the hills or in grain- 

 fields. The corolla tends to become globose in age when the colored withering tips of the petals 

 turn in slightly. The branches are often fleshy-thickened and fragile at the joints. 



Locs. — Indian Valley, w. Colusa Co., Jepson 16,265; Fall Eiver Valley, M. S. BaTcer 111; 

 Redding, BlanTcinsMp; Oroville (sw. of). Button; Lincoln, Bamaley 11,108; Slough House, n. 

 Sacramento Co., Jepson 15,263 ; Pacific House, Eldorado Co., K. Brandegee; Avery sta., Calaveras 

 Co., Tracy 5710; Clements, ne. San Joaquin Co., Jepson 15,198, 15,201; Phoenix Lake, Sonora, 

 A. L. Grant 46a; Confidence, Tuolumne Co., A. L. Grant 764. 



Var. detonsa Jepson var, n. Calyx glabrous on the outside or nearly so. — (Calyx extua 

 glaber vel subglaber.) — Open valleys or flats, 700 to 4700 feet: Sierra Nevada foothills from 

 Amador Co. to Tuolumne Co. Apr.-June. Very long hairs clothe the inside of the calyx-lobes 

 just as in the species. This is an interesting character, though it sometimes fails in single plants 

 of a collection which otherwise exhibits it (as in A. L. Grant 978). 



Locs. — "Willow Sprs. sta., n. Amador Co. foothills, Jepson 15,246 ; Avery sta., Calaveras Co., 

 A. L. Grant (type) ; Columbia, Tuolumne Co., A. L. Grant; Hog Eanch, near Hetch-Hetchy, 

 A. L. Grant 978. 



Eefs. — LiMNANTHES AI3A Hartw. ; Benth. PI. Hartw. 301 (1848), type loc. Sacramento 

 Valley, Hartweg 315 (more specifically Butte Co., cf. Ervthea 5:54) ; Jepson, Man. 593 (1925), 

 L. douglasii var, alba Eattan, Pop, Cal. Fl. 34 (1879). FloerTcea alba Greene, Fl. Fr. 100 (1891). 

 Var, DETONSA Jepson, 



4. L. striata Jepson sp. n. Foothill Foam. Stems several from the base, 

 ascending, 4 to 10 inches high; herbage glabrous; leaves similar to those of L. doug- 

 lasii; sepals linear-lanceolate, over half as long as the petals; corolla campanulate 

 in outline, white with green-yellow center, the petals obovate-oblanceolate, 4 to 5^ 

 lines long, longitudinally marked with 7 brown-purple lines which extend from the 

 base nearly to the apex, not aging rose or pink; petal-claws with 2 rows of vertical 

 hairs which subtend the filament of the opposite stamen; nutlets red-brown, 

 smoothish except at the summit which is sparsely set with whitish short-ovate or 

 triangular acute scales. — (Caules ex basi plures, ascendentes, unc. 4r-10 alti; her- 

 bae glabrae; sepala lineari-lanceolata, petalis breviora; corolla campanulata, alba, 

 centro flavo-viridis ; petala obovato-oblanceolata, 7-striata, lin. 4^5^ longa; striae 

 brunneo-purpureae non in aetate roseae vel puniceae; carpella fusca, laeviuscula, 

 ad apicem laminis albidis breviter ovatis vel deltoideis acutis rarus operta.) 



Open moist ground in the foothills, 650 to 1000 feet : Amador Co. to Tuolumne 

 Co. Apr. 



