422 POLEMONIACEAE 



salverform, 10-15 mm. long, lilac, pink or white, tube 1.5-2 times calyx, a hairy band at base 

 within, throat short, ample ; stamens inserted at base of throat, 4 times throat, long-exserted, 

 filaments glabrous ; style long-exserted, stigma about 1 mm. long ; capsule cylindric, locules 

 several-seeded. 



Inner Coast Ranges, Lake County to Tehama County and eastern Mendocino County, California. Type lo- 

 cality: "On a mountain north of Clear Lake, California." May— June. 



11. Linanthus Bolanderi (A. Gray) Greene. Bolander's Linanthus. Fig. 3936. 



Gilia Bolanderi A. Gray, Proc. Amer. Acad. 8: 263. 1870. 

 Navarretia Bolanderi Kuntze, Rev. Gen. PI. 2: 433. 1891. 

 Linanthus Bolanderi Greene, Pittonia 2: 255. 1892. 



Erect slender annual, 5-15 cm. high, simple below or branched from the base, herbage glandu- 

 lar-pilose to glabrate. Leaves 3-7-cleft into linear lobes 3-8 mm. long, hispidulous ; flowers 

 solitary on slender pedicels in an open cyme ; calyx deeply cleft into linear segments, glabrate or 

 the lobes hirsutulous above toward tips, sinuses amply filled with a hyaline membrane forming 

 a pseudotube one-half to four-fifths the calyx ; corolla funnelform, 6-10 mm. long, white to pale 

 blue or lilac, rarely bicolored, then the throat yellow, tube included, rarely slightly exserted, a 

 hairy ring within, lobes obovate ; stamens inserted on the upper half of the throat, 1.5 times 

 the throat, filaments glabrous, 6-8 times the anther ; stigma exserted, about 1 mm. long ; capsule 

 ellipsoid, locules several-seeded. 



Upper Sonoran Zone to lower Arid Transition Zone; Inner North Coast Ranges, California. Type locality: 

 "Sonoma County, on dry hills; Russian River" (Ukiah, Mendocino County). April-May. 



12. Linanthus dichotomus Benth. Evening Snow. Fig. 3937. 



Linanthus dichotomus Benth. Bot. Reg. 19: under pi. 1622. 1833. 



Gilia Linanthus Steudel, Nom. ed. 2. 1 : 683. 1840. 



GtVto dic/io<omo Benth. in A. DC. Prod. 9: 314. 1845. 



Navarretia dichotoma Kuntze, Rev. Gen. PI. 2: 433. 1891. 



Cilia dichototna var. uniftora Brand, Pflanzenreich 4^250. 144 1907. 



Gilia dichotoma var. integra M. E. Jones, Contr. West. Bot. No. 12: 53. 1908. 



Erect, simple or branched annual, stems usually glabrous and somewhat glaucous, 5-20 cm. 

 high. Leaves palmately 3-5-parted, rarely simple and entire ; inflorescence a dichotomous cyme, 

 flowers vespertine, solitary in the forks on erect pedicels ; calyx with a broad membranous tissue 

 between the lobes, truncate above and forming a pseudotube ; corolla funnelform, the tube in- 

 cluded in the calyx, throat very short, lobes convolute in the bud, obovate, entire or erose, white 

 or with a brown or purple pigment on that portion of the back exposed when closed ; stamens 

 inserted on the lower part of the tube, included, filaments dilated into a hairy pad at base; style 

 short, stigma deeply 3-parted, included below anthers ; capsule several-seeded, seeds with a loose 

 membranous coat. 



Valleys and hills, mainly Upper Sonoran Zone; South Coast Ranges and southern Sierra Nevada, California; 

 mountains of southern California; western Colorado Desert, Mojave Desert north through Inyo County, California, 

 to south central Nevada, east to Arizona. Type locality: "California." Collected by Douglas. April-June. 



Linanthus dichotomus subsp. meridianus (Eastw.) H. L. Mason. (.Linanthus dichotomus var. meridianus 

 Eastw. Leaflets West. Bot. 4: 167. (1945.) Like the species except that it flowers during the day; is wholly white 

 and fragrant. Serpentine outcrops of northern California. Type locality: 8 miles south of Pope Valley Store, 

 Napa County, California. 



13. Linanthus Bigelovii (A. Gray) Greene. Bigelow's Linanthus. Fig. 3938. 



Gilia dichotoma var. parviflora Torr. Bot. Mex. Bound. 2: 147. 1859. 

 Gilia Bigelovii A. Gray, Proc. Amer. Acad. 8: 265. 1870. 

 Navarretia parviflora Kuntze, Rev. Gen. PI. 2: 433. 1891. 

 Linanthus Bigelovii Greene, Pittonia 2: 253. 1892. 



Erect annual, 1-3 dm. high, simple or dichotomously branched, glabrous. Leaves linear, 

 entire or 2-3-cleft into linear segments 1-3 cm. long; flowers vespertine, sessile or short-pedi- 

 celled in the forks of the dichotomous cyme ; calyx about 1 cm. long, cylindrical, deeply cleft 

 into linear segments, lower two-thirds of the sinuses amply filled with a hyaline membrane 

 which is truncate across the top; corolla narrowly funnelform, 1-1.5 cm. long, white with 

 brownish purple tint on the backs of the petals, rarely pale yellow, tube 5-8 mm. long, continu- 

 ous with the throat, lobes narrowly obovate, shorter than the tube ; stamens on the upper half of 

 the tube, 2-3 mm. long, included, glabrous ; stigma included, equal to the style ; capsule cylindric ; 

 seed ellipsoid, with a bladdery testa. 



Sonoran Zones; western Stanislaus County to Ventura County, east through the Mojave and Colorado 

 Deserts, California, to Texas. Type locality: "Cook's spring, and near Frontera, Texas." March-May. 



14. Linanthus Jonesii (A. Gray) Greene. Jones's Linanthus. Fig. 3939. 



Gilia Jonesii A. Gray, Syn. Fl. N. Amer. ed. 2. 2^: 407. 1886. 



Navarretia Jonesii Kuntze, Rev. Gen. PI. 2: 433. 1891. 



Linanthus Jonesii Greene, Pittonia 2: 254. 1892. 



Gilia Bigelovii var. Jonesii Brand, Pflanzenreich 4-™: 144. 1907. 



Linanthus Bigelovii var. Jonesii Jepson & Mason in Jepson, Man. FI. PI. Calif. 802. 1925. 



Erect annual 2-10 cm. high, stems slender filiform, dichotomously branched throughout, 



