AN ENCYCLOPEDIA OF HORTICULTURE. 



73 



Fentstemon continued. 



two to several-flowered. August. I., cauline ones mostly linear- 

 lanceolate, lin. to Sin. long, sometimes serrated ; radical ones 

 spathiilate or oblong. Stems slender, 1ft. or less high. 1824. 

 (B. M. 2945 ; L. B. C. 1541.) 



P. gjrandiflorns (large-flowered), fl. purple, very showy ; corolla 

 lim. long ; sterile filament hooked, shortly dilated and very 

 slightly bearded at apex ; cymelets two to five-flowered ; 

 pedicels shortened. July. I. all distinct; cauline ones, espe- 

 cially the upper ones, round, amplexicaul, or connate-perfoliate. 



FIG. 78. UPPER PORTION OF PLANT OF PENTSTEMON 

 HARTWEGI. 



P. Hartwegi (Hartweg's).* fl. scarlet or blood-colour ; corolla 

 shortly dilated upwards, 2in. long, tubular-funnel-shaped, with 

 spreading lobes ; peduncles two or three-flowered, elongated. 

 June. I. lanceolate, or the upper ones dilated at base, amplexi- 

 caul, ovate-lanceolate, acuminate, entire, h. 2ft. 1825. See 

 Fig. 78. (B. M. 3661 and B. R. 1838, 3, under name of 

 P. gentianoides.) 



P. heterophyllus (variable-leaved).* fl. pink or rose-purple; 

 corolla more than lin. long, ventricose-funnel-shaped above, the 

 limb shortly bilabiate ; racemes twiggy ; peduncles one, rarely 

 I. entire ; cauline ones linear-lanceolate 



two, flowered. July. 



or narrow-linear, attenuated at base. 



h. lift. 1834. Plant 



highly glabrous or pruinose - puberulous, scarcely glaucous. 

 (B. M. 3853 ; B. R. 1899.) 



P. hirsutus (hairy). A synonym of P. pubescent. 



P. humilis (dwarf). This species is closely related to P. gracilis. 

 It differs, however, in the corolla being saturated with blue, and 

 shorter, thyrse more upright ; leaves paler ; and habit dwarfer 

 (Sin. to 9in. high). 1874. (B. M. 6122.) 



P. labrosus (large-lipped), fl. liin. long, horizontal or ascending ; 

 corolla scarlet, with lobes half as long as the narrow tube; 

 panicle of long, slender, loose-flowered racemes. August. I., lower 

 ones 4in. to 5in. long by Jin. to Ain. broad, narrowly oblanceolate, 

 narrowed into the petiole, quite entire, obtuse or sub-acute ; 

 upper leaves shorter, quite linear. Stem 3ft. to 4ft. high, red- 

 purple below. 1884. (B. M. 6738.) 



P. laavigatus (polished), fl., corolla white, commonly tinged 

 with purple, about lin. long, abruptly campanulate-inflated above 

 the tube ; sterile filament thinly bearded above. Summer. I. firm, 

 and somewhat glossy ; cauline ones ovate or oblong-lanceolate, 

 with subcordate, clasping base. A. 2ft. to 4ft. (B. M. 1425.) 



VoL 1U. 



Fentstemon continued. 



P. L Digitalis (Foxglove-like). /. white ; corolla upwards of lin 

 long, the tube narrowed from above, ampliate-campanulate- 

 sterile filament sparsely bearded ; thyrse naked, loose, many- 

 flowered. August. I. scarcely serrulate ; cauline ones Sin. to 

 6in. long, lanceolate, or the upper ones ovate-lanceolate, per- 

 ceptibly attenuated. A. 1ft. 1824. (B. M. 2587.) SYN. Chelona 

 Digitalis (S. B. F. G. 120). 



P. Mackayanus (Mackay's). A synonym of P. pubescens. 



P. Menziesii Douglasii (Menzies', Douglas' var).* /. lilac- 

 purple, pink-red at base ; corolla shortly bilabiate, with an 

 enlarged throat ; inflorescence racemose. June. I. thickly coria- 

 ceous, rather small, entire, usually obovate-lanceolate. A. 1ft. 

 (B. R. xxiv. 16, under name of P. crassifolius.) The typical 

 plant, Henziesii, has not been introduced. 



P. M. Scouleri (Scouler's). fl. purple. May. I. obovate-lanceo- 

 late or oblanceolate, mostly argutely serrated. A. 3ft. 1827 

 (B. R. 1277, under name of P. Scouleri.) 



P. Murrayanus (Murray's).* /. red, showy, on slender pedicels ; 

 corolla liin. long, enlarged from below ; sterile filament highly 

 glabrous, hooked, and shortly dilated at apex. August. I., upper 

 or cauline ones connate, orbicular. A. 2ft. to 3ft. 1835. (B. M. 

 3472.) 



P. ovatus (ovate), fl. purplish-blue, somewhat clustered ; corolla 

 tube scarcely enlarged ; sterile filament bearded at apex. July. 

 I. ovate or ovate-lanceolate, often argutely toothed ; upper cauline 

 ones sub-cordate at base and amplexicaul. A. 4ft. 1826. Plant 

 puberulous. (B. M. 2903 ; S. B. F. G. ser. ii. 211.) 



P. Palmer! (Palmer's), fl. pale purple, on slender pedicels ; 

 corolla broadly ampliate-campanulate above the calyx ; panicle 

 naked, raceme-like, twiggy, loose-flowered; peduncles two or 

 three-flowered. Summer. I. lanceolate-ligulate, argutely denticu- 

 late, and, as well as the stem, glaucescent ; upper ones semi- 

 amplexicaul ; lower ones spathulate, attenuated into the petioles. 

 A. lift. 1875. (B. M. 6064.) 



P. pubescens (downy).* fl. dull violet or purple, or partly 

 whitish, disposed in a loose-flowered thyrse ; corolla enlarged 

 above, and shortly obcornpressed ; sterile filament long, and 

 densely bearded. August. I., cauline ones linear- or ovate- 

 lanceolate, the uppermost ones reduced to small bracts. A. 1ft 

 to 3ft 1834. Plant viscous-pubescent or almost glabrous. SYNS. 

 P. hirsutus (B. M. 1424), P. Mackayanus. 



P. pulchellus (pretty). A synonym of P. campanulatus. 



P. Richardsonii (Richardson's), fl. violet, disposed in a loose 

 panicle ; corolla lin. long ; sterile filament slightly bearded at 

 apex. July. L ovate-lanceolate or narrow-lanceolate, incised or 

 laciniate-pinnatifid. Stem usually branched ; branches spreading. 

 A. lift. 1825. Plant almost glabrous. (B. M. 3391 ; B. R. 1121 ; 

 L. B. C. 1641.) 



P. spectabilis (remarkable). /. bluish-purple ; corolla lin. long, 

 the tube inflated above, the lobes very broad and much spread- 

 ing ; sterile filament glabrous ; cymelets three to nine-flowered, 

 pedunculate ; panicle loose, elongated. June. I. thick, ovate- 

 lanceolate, coriaceous ; upper cauline ones amplexicaul, connate. 

 A. 2ft. 1816. Plant highly glabrous. (B. M. 5260.) 



P. staticifolius (Statice-leaved). A synonym of P. ylandulosus. 



P. Torreyi (Torrey's). A synonym of P. barbatus Torreyi. 



P. triphyllus (three-leaved). /. violet, disposed in a loose, 

 leafy panicle ; corolla iin. long, slightly enlarged above ; sterile 

 filament densely bearded. July. I. lanceolate or linear, few- 

 toothed or pinnatifid ; lower ones termite or quaternate, upper 

 ones sometimes opposite. A. lift. 18^7. Plant almost glabrous, 

 branched. (B. R. 1245.) 



P. venustus (charming).* fl. purple ; corolla upwards of lin. long, 

 dilated upwards from a narrow tube ; sterile filament densely 

 bearded at apex, the lobes ciliated ; panicle thyrsoid, rather loose. 

 June. I. ovate, or ovate-lanceolate ; upper ones sub-cordate, 

 amplexicaul, thickly serrated. Stem ascendent. A. 2ft 1827. 

 Plant puberulous. (B. R. 1309.) 



P. 



Wrightii (Wright's). /. rosy-red ; corolla less than lin. long, 

 dilated-ventricose above, with an ample limb of round, much- 



spreading lobes ; sterile filament long, and densely bearded ; 

 cymelets or panicles loose, twiggy, few-flowered. June. I., lower 



long ; upper ones sub-obovate or lanceolate, amplexicaul 



1850. (B. M. 4601.) 



ft. 2ft. 



Varieties. The seedling or garden varieties of Pent- 

 stemon have now attained a high degree of excellence, 

 and, as they are so readily raised, other additions are 

 annually made, which represent improvement in form, 

 size, or colour-markings, the result of selection, which 

 the florist or specialist is rigidly prosecuting. The 

 garden varieties are principally the offspring of P. Cobcea 

 and P. Hartwegi, though other species may also have 

 had something to do with the origin. Subjoined is a 

 selection from the best varieties in cultivation. Many of 

 the old ones are now of sufficient merit to hold their own 

 against new comers. 



L 



