156 POLEMONIACEAE 



16. N. divaricata Greene. Plants I14 to 3% inches high, usually mueli broader 

 than high; main stem terminated by a head of flowers, then proliferously and 

 diffusely branched ; leaves filiform or acicular, 4 to 9 lines long, entire or with 2 

 pairs of short-aeicular teeth near the base ; herbage villous or glabrate ; body of 

 heads 3 to 5 lines broad ; bracts white-pubescent at base, palmately cleft into 3 to 

 5 acerose divisions, equaling or exceeding the flowers; calyx 2 to 2% lines long, 

 exceeding or at least equaling the coi-olla, rarely a little shorter, its lobes very un- 

 equal, acerose, entire, cobwebby, the longer ones 2 to 3 times as long as the calyx- 

 tube; corolla minute (1^,4 to 2 lines long), pinkish or purplish, sometimes whitish; 

 stamens included in corolla-throat ; capsule-cells 2 to 4-seeded. 



Sandy flats and borders of meadows or dry openly forested slopes and ridges, 

 abundant but inconspicuous, often forming dense colonies : Sierra Nevada, 3500 to 

 8200 feet, from Tulare Co. to Modoc Co. and eastern Siskiyou Co. ; North Coast 

 Ranges, 1000 to 5500 feet, from Trinity and Humboldt Cos. to western Siskiyou Co. 

 North to southern Oregon. July. 



Locs. — Sierra Nevada: near Cahoon Mdw., Tulare Co., Jepson 722 ; Huntington Lake, Jepson 

 12,980; Lake Merced, above Yosemite, Jepson 4422; Hazel Green, Mariposa Co., Jepson 15,047; 

 Dorrington, Calaveras Co., Jepson 21,105; Silver Valley, Alpine Co., Jepson 10,092; Bear Valley, 

 Nevada Co., Jepson 15,046; Bucks Valley, Plumas Co., Jepson 10,644; betw. Deadwood Ravine 

 and Eich Gulch, Plumas Co., Follett 93;" Cliico Mdws., Butte Co., Heller 11,499; Davis Creek, 

 Warner Mts., E. M. Atistin 308; Fowlers Camp, McCloud River, se. Siskiyou Co., Jepson 20,068. 

 North Coast Ranges : Soldier Ridge, Yollo Bolly Mts., Jepson 15,044 ; South Fork Mt., e. Humboldt 

 Co., Tracy 9065; Horse Mt., Humboldt Co., Tracy 9119; Corral Prairie, Trinity Summit, Tracy 

 10,395; Woolly Creek (head of), w. Siskiyou Co., Butler 104. 



Habit note. — In its most well-developed and characteristic form Navarretia divaricata is 

 markedly proliferous. The main stem is usually short (% to % inch high, rarely 2 inches) and 

 terminated by a head of flowers with several divaricate or ascending branches proliferating from 

 beneath this primary head. The branches are each in turn terminated by a head with 1 to 4 

 branches proliferous from beneath the secondary heads, these latter branches again ending in 

 a head or cluster of heads. The branches are markedly slender. A coarser form is as follows : 



Var. vividior Jepson & Bailey var. n. Plants a little coarser and larger, 2 to 7 inches high ; 

 bracts and calyces glandular-puberulent ; body of heads denser, 5 to 7 lines broad ; corolla or its 

 lobes blue; capsule-cells 3 to 6-seeded. — (Plantae erassiores majoresque, 2-7 unc. altae; brac- 

 teae et calyces glanduloso-puberulentes; capitula densiora; corolla azurca; capsulae loculi 3—6- 

 spermi.) — Sandy flats and brushy mountain slopes, 1000 to 3500 (or 6000) feet: North Coast 

 Ranges from western Shasta Co. to Lake Co. ; Sierra Nevada from Modoc Co. to Butte Co. 



Locs. — Castella, Shasta Co., Condit ; Hyampum, Trinity Co., Chesnut 4' Drexo; Van Duzen 

 River Valley, opp. Buck Mt., Tracy 2721; Chamise Mt. (n. of Bell Sprs.), Mendocino Co., Tracy 

 13,320 ; Bartlett Sprs., n. Lake Co., Jepson 18,938 ; Mt. Hanna, sw. Lake Co., Jepson 15,045 (type). 

 Sierra Nevada: Little Hot Springs Vallev, sw. Modoc Co., M. S. Balcer; Fall River Sprs., ne. Shasta 

 Co., Hall 4- Baicocl: 4214; Sutton House, Butte Co., R. M. Auslin 827. 



Var. peninsularis (Greene) Jepson comb. n. Rachis of leaves about ^/i line wide, its terminal 

 segment entire or with a pair of short teeth ; corolla 3 lines long. — Cismontane Southern Califor- 

 nia: Mt. Pinos, n. Ventura Co., Hall 6615; Cuyamaca Mts., T. Brandegee. 



Eefs. — Navakretia divaricata Greene, Pitt. 1:136 (1887) ; Jepson, Man. 790 (1925). Gilia 

 divaricata Torr. ; Gray, Proc. Am. Acad. 8:270 (1870), type loc. "foothills of the Sierra Nevada," 

 Shelton (the first named collector). Gilia atrata Jones, Contrib. W. Bot. 12:55 (1908), (type loc. 

 Salmon Mdws., Ida., Jones), belongs here as to the plant cited from Soda Sprs. sta., Nevada Co., 

 Cal., Jones 2465. Var. vrviDiOR Jepson & Bailey, type loc. Mt. Hanna, sw. Lake Co., Jepson 15,045 

 (typ. in Herbario Jepsoniano). Var. peninsularis Jepson. N. peninsularis Greene, Pitt. 1:136 

 (1887), type loc. Hanson ranch, n. L. Cal., Orcutt 1113 (isotyp. ridi). 



17. N. breweri Greene. Stem branched into very short branches ending in 

 capitate clusters, thus forming a usually dense or congested plant 1 to 3i/4 (or 6) 

 inches high and commonly as broad; herbage puberulent; leaves pinnately divided, 

 4 to 7 lines long, the 5 or 7 divisions acicular, subulate or lanceolate, sometimes the 

 divisions replaced by unequal bipartite or tripartite divisions; bracts with tripar- 

 tite divisions ; calj^-teeth subulate, entire, twice as long as the tube, exceeding the 

 corolla; corolla yellow, sometimes white, snbsalverform, 21/2 to 3i/o lines long; 

 stamens exserted, the filaments inserted at base of corolla-throat; style 3-cleft; 

 capsule-cells 1 or 2-seeded. 



