274 SCBOPHULABINE^. 



2. P. Sonomensis, 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, aculish; 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. SufTruteacent, 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 2—5 ft. high, bright green, gla- 

 brous: leaves ovate-lanceolate, 1 — 1J£ 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 Oo. 



* * Anthers horseshoe-shaped or reniform, ciliale. 



5. P. heterophyllus, Lindl. Tufted and, bushy but only \—X% 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, \% 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. DIPLiCUS, Nutl. Evergreen glutinous low shrubs with opposite 

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

 pedicellate, solitary in the axils. Oalyx 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. D. glutinosus (WendL), Nutt. Shrub 3—6 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 



