PENTSTEMON PETASITES. 



197 



oblong-lance-shaped, gradually taper- 

 ing at the base, and running down 

 the stalk, strongly nerved beneath, 

 and channelled above ; stem -leaves 

 heart-shaped, taper-pointed, stalkless. 



Arkansas. Borders, in ordinary 



soil. Division and seed. 



Pentstemon gentianoides (Common 

 P.] P. Hartwegi. A beautiful and 

 well-known kind ; 2 to 3 ft. high. 

 Flowers, in summer ; purplish-red, in 

 panicles ; peduncles bearing from 1 to 

 3 flowers each ; corolla downy out- 

 side ; tube short, throat large ; upper 

 lip 2-lobed, lower one trifid, beard- 

 less ; sterile stamen smooth. Leaves, 

 lance-shaped, about 4 in. long, and 4 

 to f in. broad, smooth, entire ; stem 

 downy, slender in the upper part. 

 There is a white and numerous 

 coloured varieties of this species. 



Mexico. Borders, in rich sandy 



loam. In cold soils it perishes in 

 winter; in warm ones in mild dis- 

 tricts it is perennial, and forms full 

 handsome bushes, when in flower. 

 Seed and cuttings. 



Pentstemon glaber (Dwarf-Blue P.) 

 A beautiful dwarf alpine species ; 

 6 to 12 in. high. Flowers, early in sum- 

 mer; exquisite blue-purple, varying 

 in hue, in terminal racemes ; corolla 

 nearly bell-shaped ; segments of calyx 

 roundish, tapering to a point ; sterile 

 filament slightly bearded. Leaves, 

 lance-shaped, entire, smooth, sessile, 

 the margins slightly undulated ; stems 

 mostly decumbent, but occasionally 

 more or less erect. P. speciosus is now 

 considered a variety of this, growing 

 taller and more erect, and P. cyanan- 

 t/ius is another form. North America. 



The rock-garden, in sandy or 



peaty soil, and in well- drained warm 

 spots, and on the margin of the choice 

 mixed border, in well- drained free 

 soil. Seed, cuttings, and division. 



Pentstemon Jaffrayanus (Gentian- 

 Wue P.) A. handsome, slightly - 



shrubby plant; 1 ft. to 16 in. high. 

 Flowers, from July to August ; hand- 

 some gentian-blue, bell -shaped, with 

 a very wide tube and reflected lobes ; 

 anthers purplish ; I to 2 flowers on 

 each pedicel, arranged in an irregular 

 cluster, 4 to 8 in. long. Leaves, op- 

 posite, glaucous, oblong-lanceolate ; 

 the lower ones narrowed into a foot- 

 stalk ; the upper ones stem- clasping 

 and broader ; stems tinged with a 



reddish hue. California. In warm 



lower parts of the rock-garden or on 

 warm borders, in well-drained very 

 sandy loam. This plant is somewhat 

 tender. Cuttings and seed. 



Pentstemon procerus ( WhorledP.} 

 A very pretty, hardy, dwarf and spread- 

 ing kind; 8to 15in. high. Flowers, early 

 in summer ; pale blue veined with 

 purple, small, very freely produced in 

 little racemes, that stand so close to 

 the stem as to seem in whorls ; sterile 

 stamen bearded at top. Leaves, lance- 

 shaped, entire ; lower ones stalked ; 

 upper ones stalkless, sub-connate. 

 North-west America and the Eocky 



Mountains. Flourishes freely in 



borders, in almost any soil, and suit- 

 able also for the rock-garden, among 

 the more easily grown plants, and 

 also as an edging. Division. 



Pentstemon Scouleri (Scouler's P.) 

 A neat shrubby kind; about 1 ft. 

 high. Flowers, in summer ; pale lilac- 

 purple, in racemes ; stalks one- 

 flowered ; corolla ventricose, nearly 

 2 in. long, spreading at the mouth ; 

 anthers downy; calyx downy, seg- 

 ments taper- pointed. Leaves, nar- 

 row, obovate-lance-shaped, sharply 

 notched ; upper ones entire ; stems 

 suffruticose ; branchlets pilose. North 



West America. The rock-garden, 



or borders, in free well- drained soil. 

 Cuttings and division. 



Petasites fragrans (Winter Helio- 

 trope). A weedy-looking plant, 4 to 

 12 in. high. Flowers, in December 



