270 HYDROPHYLLACEAE 



glabrous or essentially so ; style cleft only at apex, hispid on lower half ; fruiting 

 calyces rather closely erect ; capsule 26 to 40-seeded, the seeds areolate with a pit 

 in center of the areolae. 



Rocky ledges in arid caiions, 4500 to 7000 feet : Grapevine and Black mountains 

 and Panamint Range bordering Death Valle.y, Inyo Co. June-Nov. 



Geog. note. — Phacelia mustelina, a narrow endemic, has been collected in tlie Grapevine Mts. 

 (near Klare Spr., Titus Caiiou, Jepson 19,848) and in Wildrose Caiion {Gilman 1983), and Wood 

 Canon (Jour. Wasli. Acad. Sci. 27:197) and on Tiu Mt., Oilman 3877, of tlie Panamint Range; 

 also In Dantes Canon, Black Mts., Gilman 3500. It is closely related to Phacelia pulchella Gray 

 (Proc. Am. Acad. 10:326, — 1875) of southern Utah and southern Nevada. Both species are in- 

 sufficiently kno\vn. Phacelia mustelina is here recognized by reason of its short pedicels (the 

 pedicels in P. pulchella are nearly as long as the calyx), its erect fruiting calyces (the calyces in 

 P. pulchella are spreading), its stamens inserted at summit of proper tube (in P. pulchella in- 

 serted at base of tube), and its corolla-scales (beginning at summit of proper tube) truncatish 

 at apex (tapering to apex in P. pulcheUa). The fruiting calyces are cylindric in Phacelia mus- 

 telina, in P. pulcheUa they tend to be turbinate. In addition, the herbage in Phacelia mustelina 

 is much more glandular than in P. pulchella. Such indicated differences may be modified when 

 these plants are better known geographically. 



Eef. — Phacelia mustelina Cov., Proc. Wash. Acad. Sci. 27:196 (1937), type loo. Titus 

 Canon, Grapevine Mts., Inyo Co., Gilman 1810. 



38. P. divaricata Gray. Stem branched from the base, diffuse or spreading, 

 2 to 12 inches high, the branches both hirsute and pubescent, 3 to 16 inches long ; 

 leaf-blades broadly oblong to ovate, strigose, entire, rarely with a pair of coarse 

 teeth towards base, or with a pair of supplementary lobes at summit of the petiole 

 (% or) 1 to 2 inches long ; petioles of basal leaves equaling or exceeding the blade, 

 those of the cauline very short (1 to 6 lines long) ; pedicels Yo to 1 line long; calyx- 

 lobes in fruit linear or oblaneeolate, 4 to 7 lines long, sparsely hispid-ciliate, with 

 somewhat thickened margins and prominent midnerve and cross-veins ; corolla 

 blue, broadly open-campanulate, sometimes with 5 brown spots at base of throat, 



5 to 9 lines broad ; scales rather broad, undulately narrowed upward to an acute 

 point, wholly adnate ; style 2-cleft at apex ; seeds 7 to 10, regularly pitted. 



Open hills, often on grassy slopes, 200 to 2000 feet : Coast Ranges from Colusa 

 and Marin Cos. to San Benito Co. Mar.-June. 



Locs. — Wilbur Spra. (3% mi. se., on Bear Creek), sw. Colusa Co., IF. I. Follett ; Calistoga 

 (e. of, on Pope Valley grade), Jepson 21,020; Mt. Tamalpais, A. L. Grant : Oakland Hills, A. L. 

 Grant; Las Trampas Eidge, Contra Costa Co., Jepson 21,019; Mt. Diablo, Bowerman 2897 ; Eed- 

 wood City, Jepson 5733 ; Mt. Hamilton, Chandler 6040; Los Gates (hills w.), Pendleton 555; New 

 Idria, San Carlos Eange, se. San Benito Co., Eastwood ; North Fork Lewis Creek (n. of Priest 

 Valley), se. Monterey Co., Jepson 2679a. 



Var. wrangeliana (P. & M.) Jepson comb. n. Stems several from the base, decumbent or 

 diffuse, 2 to 7 inches long, these and the petioles spreading-hirsute; leaf -blades strigose, % to 3 

 inches long, of two main patterns but with intergrades: (a) leaf -blades ovate to oblong in outline, 

 pinnately sinuate-divided, the lobes entire or once-cleft or -toothed, obtuse, usually with some 

 smaller lobes between ; (b) leaf -blades ovate to oblong, entire, or -n-ith 1 or 2 pairs of supplementary 

 lobes at summit of petiole; racemes few-fiowered, dense; pedicels % to 1 line long; calyx -lobes 

 nearly as long as the corolla in anthesis, becoming much enlarged in fruit, oblong to obovate, 4 to 



6 lines long, the lower calyx-lobe usually conspicuously larger than the rest ; corolla blue, broadly 

 campanulate, 3 to 4 lines long, the tube dull white ; scales narrow, adnate % to % their length to 

 the filament, the upper slender -lanceolate portion wholly free, the scale free from corolla except 

 at base; stamens % as long as corolla; ovary densely white-hairy; ovules 16 to 24; style cleft %, 

 about % as long as corolla ; capsule markedly compressed. — Ocean shore-line, 20 to 50 feet, within 

 10 to 400 yards of the beach: Marin Co. (Pt. Eeyes, Ferris 8043) to Mendocino Co. (near Fort 

 Bragg, Seaholm). Mar.-May. 



Note on tlower and habit of var. wrangeliana. — The corolla-lobes are transversely elliptic 

 with the lower corners rounded and overlapping those of the adjacent lobes in such a way as to 

 make these corners appear as if auriculate. One corolla-lobe is markedly hairy on the back, the 

 others obscurely hairy. Just below each corolla sinus is a shallow saccate areola or depression, 

 oblong in shape. Collections from the colony at Fort Bragg are markedly diverse in aspect and 

 leafage and somewhat in habit. Plants growing in grass are very slender. Var. wrangeliana has, 

 perhaps, some claims to specific status. 



Refs. — Phacelia divaricata Gray, Proc. Am. Acad. 10 :325 (1875) ; Jep.son, Fl. W. Mid. Cal. 

 437 (1901), ed. 2, 340 (1911), Man. 828 (1925). Eutoca divaricata Benth., Trans. Linn. Soc. 



