274 SCKOPHULAEINE^E. 



2. P. Sou om ensis, Greene. Suffrutescent, evergreen, very leafy, 5 

 10 in. high, slightly puberulent: leaves rather light green, coriaceous, den- 

 ticulate, %% in. long and nearly as broad, short -petiolate, the 

 uppermost round-ovate, acutish; lower nearly orbicular and retuse: 

 raceme terminal, sessile: calyx-lobes lanceolate, acuminate: corolla 1 in. 

 long, deep red; segments nearly equal, not widely spreading: anthers 

 slightly exserted: white- woolly. Among rocks at the summit of Hood's 

 Peak, Sonoma Co., and on Mt. St. Helena. 



3. P. corymbosus, Benth. Suffrutescent, much branched, ascending 

 1 2 ft. high, cinereous-pubescent: branches leafy up to the corymbiform 

 cyme: leaves oblong or oval, denticulate, % 2 in. long: sepals lanceolate: 

 corolla scarlet, narrow-tubular 1 in. long with abruptly spreading limb: 

 anthers glabrous. Summits of Mt. Hamilton, Mt. Diablo, and north- 

 ward; growing on rocks. July, Aug. 



4. P. Lemmoni,Gray. Slender shrub 25 ft. high, bright green, gla- 

 brous: leaves ovate-lanceolate, 1 1^ in. long, sharply though remotely 

 serrate-toothed: panicle loose, virgate and racemose: peduncles longer 

 than the subtending floral leaves, cymosely 2 7-flowered: corolla small, 

 dull yellowish and red, with short tube and small unequal segments: 

 sterile filaments strongly yellow-bearded on one side of the curved apex. 

 Mountains of Solano Co. 



* * Anthers horseshoe-shaped or reniform, ciliate. 



5. P. heterophyllus, Lindl. Tufted and bushy but only 11^ ft. 

 high and somewhat woody at base : herbage glabrous, glauescent, the 

 stem commonly reddish: leaves linear-lanceolate and linear, subcoria- 

 ceous, entire: peduncles short, erect, 1 3-flowered: sepals lanceolate, 

 acuminate: corolla glabrous, lJ/ in. long, with ample ventricose tube 

 and rather short bilabiate limb, the whole either red-purple or bright 

 blue. On the higher parts of both Coast and Mt. Diablo ranges. 



7. DIPLA.CUS, Nutt. Evergreen glutinous low shrubs with opposite 

 mostly serrate-toothed leaves revolute in vernation. Flowers showy, 

 pedicellate, solitary in the axils. Calyx 5- angled, 5-toothed, persistent, 

 finally ruptured by the splitting of the 2-valved subligneous capsule. 

 Corolla with funnelform tube and bilabiate limb, all the segments 

 spreading; the lower larger than the upper. Capsule linear-oblong, 

 with a tubercular enlargement at the pointed apex at base of the style, 

 firm-coriaceous, dehiscent by the upper suture, each valve bearing its 

 own placenta which is lamellar and conceals the many minute seeds. 



1. I), glutinosus (Wendl.), Nutt. Shrub 36 ft. high; branches 

 puberulent: leaves linear-lanceolate, acutish, denticulate, in age loosely 

 revolute, pubescent beneath with branching hairs: corolla 1 in. long, 

 buff or salmon color; throat narrow-funnelform; lobes emarginate or 



