PHACELIA FAMILY 269 



Gravelly slopes of mountains in or bordering the deserts, often under pines, 

 4000 to 8000 feet : mountains on the west side of the Colorado Desert ; Mohave Desert 

 and the mountains bordering its westerly sides ; Tehachapi Mts. ; southern Sierra 

 Nevada in Kern Co. ; Inj'o Co. North to Nevada, east to Utah. May- June. 



Locs. — Mts. on west side of the Colorado Desert: Laguna Mts., T. Brandegee ; Volean Mts., 

 T. Brandegee ; Palomar Mt. (east side, Oak Grove trail). Mum 10,399; Vandeventer Flat, Santa 

 Eosa Mts., Jepson 1421. Mountains bordering the westerly sides of the Mohave Desert: Mill 

 Creek, San Bernardino Mts., Jepson 5577 ; Bear Valley, San Bernardino Mts., Parish 3770 ; Cajon 

 Pass, Peirson 2431; Lytle Creek Canon, San Gabriel Mts., Hall; Bear Canon, Mt. San Antonio, 

 T. Craig 404; Mt. Wilson, San Gabriel Mts., Geo. B. Grant; Prazier Mt., n. Ventura Co., Dudley 

 4- Lamb 4571. Mohave Desert: Antelope Valley, A. Davidson; Ord Mt., Jepson 5S8G. Tehachapi 

 Mts. : Caliente, K. Brandegee. Southern Sierra Nevada in Kern Co. : Erskine Creek, Purpus 5049 ; 

 Greenhorn Pass, Greenhorn Mts., Purpus 5698. Inyo Co. : Lone Pine Creek, Mall £[■ Chandler 

 7200 ; Independence Creek, Hall 4" Chandler 7301 ; Andrews Camp, K. Brandegee. 



The typical form with smaU corollas passes by intergrades into a larger flowered form (var. 

 davidsonii Brand) which is not otherwise different: Piute Mts., Kern Co., C. N. Smith 163; 

 Mt. Wilson, San Gabriel Mts., Peirson 968; Swartout Canon, San Gabriel Mts., Hall; Oak Glen, 

 San Bernardino Mts., if. J. Smith 7 ; Laguna Lakes, Laguna Mts. Plants vrith small corollas and 

 plants with large corollas may often be found in the same locality. In a colony a few yards square 

 on Bear Mt., Tehachapi Mts. (Jepson 7175), depauperate plants bear small corollas, robust plants 

 larger corollas. The var. insularis (Munz) Jepson comb. n. occurs on Santa Eosa and San Miguel 

 islands; its corolla scales are half -free and the filaments glandular puberulent (ex char.). 



Eefs. — Phacelia cuevipes Torr. ; Wats., Bot. King 252 (1871), "foothUls near Carson and 

 Washoe cities and on the Trinity Mts., w. Nev.," the type Watson 877; Jepson, Man. 827 (1925). 

 P. davidsonii Gray, Proc. Am. Acad. 10:324 (1875), type loc. Kern Co., Geo. Davidson; Jepson, 

 I.e. (1925). P. curvipes var. davidsonii Brand; Engler, Pflzr. 4-^1:115 (1913). P. davidsonii 

 var. macrantha Parish, Erythea 6:90 (1898), type loc. Waterman Canon, San Bernardino Mts., 

 Parish; Jepson, I.e. P. curvipes f. macrantha Brand, I.e. 116. P. aldersonii Greene, Pitt. 5:22 

 (1902), type loo. Witch Creek, San Diego Co., Alderson. P. nemophiloides Greene, I.e. 5:23, 

 type loc. San Bernardino Mts., Parish. P. pratensis Hel., Muhl. 2:236 (1906), type loc. McGee 

 Mdws., Birch Creek, foothills w. of Bishop, Inyo Co., Heller 8273. P. curvipes var. pratensis 

 Brand, Univ. Cal. Publ. Bot. 4:222 (1912). Var. insulams Jepson. P. insularis Munz in Hoff- 

 man, Bull. S. Cal. Acad. 31:113 (1932), type loc. Santa Eosa Isl., Munz 11,756. 



36. P. rotundifolia Torr. Stem commonly much-branched from base, 3 to 8 

 inches high; herbage hispidulous, dark glandular, usually reddish-browu ; leaf- 

 blades cordate-orbicular or cordate-ovate, coarsely crenate, 3 to 8 lines long, on 

 petioles 1 to 2% times as long ; racemes short, lax, rather few-flowered ; pedicels in 

 fruit % to 3 lines long; calyx-lobes spatulate to linear-spatulate, exceeding the 

 mature capsule; corolla white, tubular, 11/2 to 2^,4 lines long, I14 to II/2 times as 

 long as the cal3rx, its lobes transversely quadratish or suborbicular ; scales reduced 

 to very narrow wings or linear thickenings or obsolete; stamens included; style 

 slightly bifid at the apex ; ovules 20 to 30 to each placenta ; seeds globular. 



Shaded rock pockets or crevices of cliffs in desert caiions or in sandy-gravelly 

 washes, 2000 to 4.500 feet : Inyo Co. ; eastern Mohave Desert. East to Utah and 

 Arizona. Apr.-May. Infrequent. 



Locs. — Inyo Co.: Inyo, T. Brandegee; Titus Canon, Grapevine Mts., Jepson 19,850; Johnson 

 Canon, Panamint Eange, Jepson 19,599. Mohave Desert: Kane Spr., Ord Mts., Hall 4' Chandler 

 6811; Mitchells Caverns, Providence Mts., Jepson 18,176; Piute Creek, near Piute Eange, A*. C. 

 Wilson. 



Eefs. — Phacelia rotundifolia Torr.; Wats., Bot. King 253 (1871), type loc. s. Utah, 

 Palmer; Brand in Engler, Pflzr. 42=1:121, fig. 21 (1913) ; Jepson, Man. 827 (1925). 



37. P. mustelina Cov. Stem somewhat stout, freely and widely branched, 3 to 

 9 inches high ; herbage densely glandular-villous, as also the racemes and calyces ; 

 leaf-blades suborbicular to broadly ovate, truncatish to subcordate at base, den- 

 tately few-toothed, the petioles I/4 to % as long; racemes moderately dense, the 

 pedicels short (i/4 to 1 line long) ; calyx-lobes spatulate; corolla purple or pink with 

 whitish throat, tubular-campanulate, 4 to 6 lines long, its scales linear or slightly 

 widened upward, wholly adnate, at apex truncate, at base joined to base of fila- 

 ments ; stamens inserted at summit of proper tube, a little shorter than corolla. 



