250 HTDROPHYTJLACEAE 



takes on distributional significance in a limited area of the region of San Francisco Bay and is 

 quite segregated geographically from Phaeelia magellanica var. griseophylla. 



Loc3. — Eva sta. (Forest Grove), Santa Cruz Mts., Jepson 21.036; Crystal Springs Lake, San 

 Mateo Co., Elmer 4419; San Francisco, K. Brandegce ; Eedwood Peak, Oakland Hills, T. Brande- 

 gee; Berkeley Hills, Jepson 21,037; Mt. Diablo, Bowerman 2233; Mt. Tamalpais, T. Brandegee; 

 Petaluma, Tidestrom; Sonoma. 



Eefs. — Phacelia nemoralis Greene. Pitt. 1:141 (18S7), type loe. Oakland and Berkeley 

 HUs, Greene; Jepson, Fl. W. Mid. Cal. 439 (1901), ed. 2, 342 (1911), Man. 821 (1925). P. iio- 

 lettii Greene, Pitt. 5 :23 (1902), type loc. Eedwood Canon, Mt. Tamalpais, Bioletti; (the "Sequoia 

 Canon" of Michener & Bioletti is Eedwood Canon of Muir Woods, Mt. Tamalpais, not "Oakland 

 Hills"). 



4. P. dalesiana J. T. Howell. Plants 2 to 4 inches high, the decumbent stems 

 and basal leaves arising from the stout root-crown ; stems 1 or 2-leaved, the leaves 

 opposite or nearly opposite when 2, borne at the summit of the stem (that is, at 

 the base of the terminal raceme) ; petioles and stems villous-puberulent, the leaf- 

 blades minutely strigulose; basal leaf-blades broadly ovate to elliptic or oblong, 

 entire, acute or subobtuse, % to 1% inches long, the petioles Vo to l^ times as 

 long; blades of cauline leaves V2 to 1 inch long; racemes few (3 to 5) -flowered, very 

 loose, the pedicels straight or curved, 2 to 8 lines long ; calj'x -lobes about as long 

 as the corolla-tube ; corolla dull white, open-campanulate, 3 to 31/2 lines long, its 

 limb rotate, 5 to 7 lines wide; corolla-lobes about a.s long as the tube ; scales shortly 

 fan-shaped, wholly adnate to corolla, free from the filaments ; anthers dark purple ; 

 style cleft % to base, the branches pilose to about the middle; ovules 2 to each 

 placenta, attached at upper end ; capsule mostly 2-seeded, shorter than the calyx ; 

 seeds oval. 



Mountain meadows, 5500 to 6000 feet : Scott Mts., northeastern Trinity Co. 

 May-June. 



Geog. note. — Phacelia dalesiana, a remarkable narrow endemic, is confined (so far as now 

 known) to the summit of the Scott Mountains north of CarrvUle. The racemes, as in Phacelia 

 eisenii and P. pringlei and often in P. curvipes, are not scorpioid or only slightly so. The nearly 

 naked stems are peduncle-like, although the few leaves they bear are as large or larger than some 

 of the basal leaves. The habit and leaves are somewhat suggestive of Hesperochiron pumilus or 

 californieus, a point emphasized by the describer of this unusual species. In Hesperochiron, how- 

 ever, the peduncles are quite naked and the plant acaulesccnt. 



Eef. — Phacelia dalesiana J. T. Howell, Lflts. West. Bot. 2:51 (1937), type loc. summit of 

 Scott Mts., n. of Carrville, Trinity Co., Eastwood 4" Howell 5014 (cotyp. vidi). 



5. P. perityloides Gov. Stems several from a branched woody root-crowu, 

 freely branched, decumbent or semi-prostrate, forming a dense somewhat mat-like 

 or low mound-like plant 3 to 5 inches high and 6 to 14 inches broad ; main stems 

 white-lanate ; branchlets and foliage densely glandular-pubescent; herbage heavily 

 ill-scented; leaf-blades orbicular, cordate or truncate at base, sharply dentate. 

 2 to 6 lines long ; petioles 14 to 2 inches long, mostly longer than the blades ; racemes 

 short, loose, rather few-flowered; pedicels curved-spreading, 3 to Z^o Hues long; 

 calyx-lobes obovate to oblong-spatulate, in fruit slightly exceeding the ovate cap- 

 sule; corolla white, subcylindric (that is. enlarged a little upward), 4 lines long, 

 twice as long as the calyx, the throat yellowish or purplish; scales narrowly linear 

 or almost lineate, quite free from the filaments; stamens included; ovules 160 to 

 200 to each placenta. 



Crevices of rocks or recesses or open caverns of cliffs in desert caiions or some- 

 times in washes of canon bottoms, 2700 to 5200 feet : Grapevine Mts. and Panamint 

 Range bounding Death Valley, southeastern Inyo Co. May-June. 



Note on range. — Phacelia perityloides is a narrow endemic restricted to the ranges bordering 

 Death Valley, the Grapevine Mts. on the east and the Panamint Eange on the west. It has been 

 found in Titus Caiion of the Grapevine Mts. (Peirson 11,807) and occurs in Surprise and Pleasant 

 canons on the west slope of the Panamint Eange and in Hanaupah Caiion (Jepson 7060) and 

 Johnson Caiion (Jepson 19,762) on the east slope. Its longitudinal range, so far as now knovra 

 to us, is about 28 miles. 



