PHLOX FAMILY 419 



or dull yellow tube included in calyx, a hairy ring within at summit ; stamens inserted on throat 

 just beneath sinuses of corolla-lobes, about half as long as petals, filaments glabrous ; stigma 

 long-exserted ; capsule-locules many-seeded. 



Mountain valleys and mesas. Arid Transition and Upper Sonoran Zones; San Bernardino Valley south 

 through western Riverside and eastern San Diego Counties, California, to Lower California. Type locality. S.E. 

 California, in San Bernardino Co." April-July. 



7. Linanthus aureus (Nutt.) Greene. Desert Gold. Fig. 3932. 



Cilia aurea Nutt. Journ. Acad. Phila. II. 1: 155. 1848. 



Leptosiphon aureus Benth. ex. Vilm-Andr. Fl. PI. Terre ed. 2. 470. 1866. 



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



Linanthus aureus Greene, Pittonia 2: 257. 1892. 



Dactylophyllum aureum Heller, Muhlenbergia 2: 231. 1906. 



Erect or spreading annual, 5-10 cm. high, often spreading to 20 cm., lower internodes short, 

 upper wiry elongate, glabrous to hispid or stipitate-glandular, branchmg cymose. Leaves 3-clett 

 into linear mucronate segments, 3-6 mm. long; flowers on slender pedicels m an open cyme; 

 calyx deeply cleft, sinuses about two-thirds filled with a hyaline membrane, glabrate to hispid 

 or stipitate-glandular, lobes short-villous above toward tips; corolla campanulate to short- 

 funnelform, 6-12 mm. long, golden to pale yellow, often with purple spots in the throat, tube 

 included in calyx, shorter than throat, with a hairy ring within at its juncture with throat ; 

 stamens inserted on upper half of throat, barely exserted from orifice; stigma exserted, about 

 one-third as long as style ; capsule several-seeded. 



Desert washes and sandy slopes, 500 to 6,000 feet, Sonoran Zones; Ventura and Inyo Counties, California, 

 south to Lower California, east to Nevada and New Mexico. Type locality: "Santa Barbara. April-June. 



Linanthus aureus subsp. decorus (A. Gray) H. L. Mason. (Cilia aurea var. decora A. Gray, Proc. Amer. 

 Acad 8: 264. 1874.) A larger flowered variant with cream-white flowers and usually with a dark throat. Growing 

 in scattered localities throughout the Mojave Desert, California. Type locality: "California. Collected Dy 

 Fremont. 



8. Linanthus Bakeri H. L. Mason. Baker's Linanthus. Fig. 3933. 



Cilia Bolanderi Brand, Pflanzenreich 4250; 134. 1907. As to specimens cited, not A. Gray. 

 Linanthus Bakeri H. L. Mason, Madrono 9: 249. 1948. 



Erect slender annual, 6-25 cm. high, internodes wiry, Z-7 times the leaves, glandular- 

 puberulent below the nodes and on pedicels, branching cymose, not profuse. Leaves 3-7-parted 

 into linear lobes : flowers on long slender pedicels in an irregular cymose panicle ; calyx deeply 

 cleft into linear lobes, these puberulent above toward the tips, sinuses about half-filled with a 

 narrow hyaline membrane which becomes distended by the growing capsule; corolla slender- 

 funnelform, 6-10 mm. long, white, pink, lilac or violet, sometimes with a definite zoning, tube 

 usually exserted, rarelv included, 1-4 times the throat, with a narrow hairy band within, rarely 

 glabrous, tube and throat usuallv puberulent exteriorly, throat narrow, lobes 2-3 mm. long; 

 stamens inserted in the sinuses of corolla-lobes or just below, one-half as long as corolla-lobes, 

 filaments glabrous, 1-2 times the anthers; stigma exserted from orifice of throat, lobes about 

 1 mm. long ; capsule oblong cylindric, locules several-seeded. 



Fresno County and Mount Diablo, north in the Coast Ranges and Sierra Nevada, California, to Klickitat 

 County, Washington. Type locality: Pilot Hill, Eldorado County, California. April-July. 



9. Linanthus ambiguus (Rattan) Greene. Serpentine Linanthus. Fig. 3934. 



GtVio a>n&i£;i(a Rattan, Bot. Gaz. 11: 339. 1886. 



Linanthus ambiguus Greene, Pittonia 2: 256. 1892. 



Cilia Bolanderi var. ambigiia Brand, Pflanzenreich 4^": 13S. 1907. 



Dactylophyllum ambiguum Heller, Muhlenbergia 2: 309. 1907. 



Linanthus Rattanii var. ambiguus Jepson, Fl. Calif. 3: 210. 1943. 



Erect annual, 6-15 cm. high, stems simple or branched from the base, glabrous or hairy, 

 sometimes with gland-tipped hairs below nodes. Leaves 3-7-cleft into linear minutely hispid 

 lobes ; flowers solitary on slender pedicels in an open cymose panicle ; calyx cylindrical, 3-6 rnm. 

 long, deeply cleft into linear lobes, sinuses nearly filled with a narrow hyaline membrane forming 

 an evident pseudotube, the proper tube not over 1 mm. long, lobes pilose-hispid, often villous 

 above toward tips; corolla funnelform, 9-12 mm. long, color distinctly zoned, tube yellow or 

 white, throat purple, lobes pink to blue with a yellow band at base, tube with a broad hairy 

 band within on upper half; stamens inserted just below sinuses of corolla-lobes, one-half to 

 three-fourths as long as lobes; pistil about equaling corolla, stigma exserted, lobes 2-3 mm. 

 long ; capsule cylindric, locules several-seeded. 



Largely on serpentine soil, Upper Sonoran Zone; south central California in Mount Hamilton and San 

 Benito Ranges and the eastern foothills of the Santa Cruz Mountains. Type locality: "Oak Hill, four miles south 

 of San Jose." April-June. 



10. Linanthus Rattanii (A. Gray) Greene. Rattan's Linanthus. Fig. 3935. 



Cilia Rattanii A. Gray, Syn. Fl. N. Amer. ed. 2. 2»: 407, 1886. 

 Navarretia Rattanii Kuntze. Rev. Gen. PI. 2: 433. 1891. 

 Linanthus Rattanii Greene, Pittonia 2: 257. 1892. 



Erect annual, 6-20 cm. high ; stems simple or branched, pilose to glabrate. Leaves 3-7-cleft 

 into linear segments 4-6 mm. long; flowers solitary on slender wiry pedicels arranged in a 

 cymose panicle; calyx cylindrical, deeply cleft into linear 3-nerved lobes, pilose-hispid to glab- 

 rous, sinuses nearly filled with a narrow hyaline membrane; corolla slender-funnelform to 



