PENTSTEMON 



PEPEROMIA 



1271 



erect but lax, the peduncles 2-several-fld. : fls. about % 

 in. long, blue changing to purple, 2-lipped and the lower 

 lip bearded. Idaho, west and north. B.M. 2903. Good. 

 31. pubSscens, Solander. Loose-growing, the slender 

 often decumbent stems reaching 2 ft., usually viscid- 

 pubescent: Ivs. oblong to oblanceolate, small-toothed, 

 the radical ones ovate to spatulate: inflorescence loose 

 and open, the peduncles 2-3 in. long and the pedicels 



1716. Pentstemon Cobeea (X 



often 1 in. long: fls. about 1 in. long, drooping, dull 

 purple or violet or varying to flesh-color, rather narrow, 

 with 2 short lobes, bearded on the palate; sterile fila- 

 ment densely bearded. Dry fields and banks from On- 

 tario south and west. B.M. 1424. The common Pent- 

 stemon of the East, and useful in cult. 



AA. Cells of anthers not dehiscing or opening to the 

 base, the basal part remaining saccate. 



B. Leaves dentate or serrate. 

 c. Plant viscid and soft-piibescent. 



32. glanduldsus, Lindl. (P. staticifolius , Lindl.). 

 Rather stout, 2-3 ft. tall: Ivs. rather thin, ovate-lanceo- 

 late, acuminate, the upper ones clasping, the radical 

 ovate or oblong, all toothed or serrate: inflorescence 

 narrow, leafy below, the peduncles f ew-several-fld. : 

 fls. large, somewhat over 1 in. long, lilac, with inflated 

 throat, the lips short and broad ; sterile filament gla- 

 brous. Idaho to Wash, and Ore. B.R. 15:1262; 21:1770. 

 B.M. 3688. -Showy. 



cc. Plant not viscid, either glabrous or puberulent. 



33. venustus, Dougl. Stem erect, nearly simple, leafy, 

 2 ft. or less tall, glabrous: Ivs. thickish, oblong-lanceo- 

 late to ovate-lanceolate, very sharply serrate : inflo- 

 rescence narrow, not leafy, the peduncles 1-3-fld. : fls. 

 usually exceeding 1 in. in length, somewhat 2-lipped, 

 light purple, somewhat hairy within; sterile filament 

 hairy above. Idaho and Ore. B.R. 16:1309. 



34. diffusus, Dougl. Stems about 2 ft. tall, diffuse: 

 Ivs. ovate to oblong-lanceolate to cordate-ovate, un- 

 evenly and deeply serrate : inflorescence leafy, the 

 pedicels very short: fls. % in. long, light purple, 2- 

 lipped; sterile filament hairy above. Ore., north. B.M. 

 3645. B.R. 14:1132. R.H. 1872:410. 



BB. Leaves deep-cut. 



35. Richardsoni, Dougl. Rather loosely branching: 

 Ivs. ovate-lanceolate to narrow lanceolate, deeply cut or 



pinnatifid, the upper ones not opposite : inflorescence 

 loose: fls. % in. long, light purple; sterile filament 

 somewhat hairy at top. Ore. and Wash. B.M. 3391. 

 B.R. 13:1121. L.B.C. 17:1641. 



BBB. Leaves entire. 

 c. Sterile filament somewhat bearded. 



36. gracilentus, Gray. A foot or more tall from a 

 woody base, naked above: Ivs. lanceolate to linear or 

 oblong, glabrous: inflorescence loose, the viscid pedun- 

 cles 2-5-fld. : fls. % in. long, violet-blue, the lobes very 

 short. N. Calif., Nev., and Ore. 



cc. Sterile filament glabrous. 



37. Isetus, Gray. About 1 ft. tall, from a woody base, 

 closely pubescent: Ivs. lanceolate to linear-lanceolate, 

 the radical ones spatulate: fls. 1 in. long, blue. Calif. 



38. azureus, Benth. Erect or ascending, 3 ft. or less, 

 glaucous, sometimes minutely pubescent; Ivs. narrow- 

 ovate to narrow-lanceolate: inflorescence loose and 

 open: fls. 1% in. or less long, blue to violet, sometimes 

 reddish at the base, the limb about 1 in. across. Calif. 

 B.M. 7504. 



Var. Jaffrayanus, Gray (P. Jaffrayanus, Hook.). 

 Lower (about 1 ft. tall), young stems tinged with red: 

 Ivs. oblong to oval or the upper ones ovate-lanceolate, 

 glaucous : fls. large and showy, rich blue and reddish at 

 base and in the throat. Utah to Calif. B.M. 5045. 

 R.H. 1874:430. 



39. heterophyllus, Lindl. Stems reaching 3-5 ft., 

 from a woody base, the plant mostly green: Ivs. vary- 

 ing from oblong-lanceolate above to lanceolate and linear 

 below: inflorescence loose and open, the peduncles usu- 

 ally 1- or 2-fld. : fls. about 1 in. long, pink or rose-pur- 

 ple, very slender at the base but full or inflated above, 

 the lips well marked. Calif. B.R. 22:1899. B.M. 3853. 

 R.H. 1875:110; 1896, p. 348. L . H . B . 



PEONY. See Pceonia. 



PEPEROMIA (Greek, pepper-like}. Piperdceoe. An 

 enormous genus of tropical herbs, mostly American, in- 

 cluding some small but choice foliage plants for con- 

 servatory or house decoration. See Pig. 1717. Annual, 

 or perennial by a creeping caudex or by tubers formed 

 at the base: stems prostrate, creeping and thread-like, 

 or erect and slender, or short, thick and succulent: Ivs. 

 alternate, opposite, or in whorls of 3-4 (rarely 5-6), 

 entire, fleshy or membranous, often with pellucid dots : 

 fls. minute, usually disposed in a dense spike, as in 

 Pig. 1718 ; stamens 2 ; anther cells confluent ; stigma 

 sessile in the ovary. 



Speaking of P. arifolia, var. argyreia, 3. D. Hooker 

 says (B.M. 5634) : It is a very beautiful plant, and like 



1717. Peperomia arifolia, var. argyreia. 

 A choice little house plant with variegated foliage. 



so many of its congeners, is well adapted for placing 

 along the edge of a shelf in a tropical house, both be- 

 cause of its beautifully marbled leaves and the length 

 of time which these keep in good condition. In fact, 



