PENTSTEMON. 



with longer blossoms, wider in the gaping mouth and (with great im- 

 prudence, therefore) less fully protected by a beard at the throat. 



P procumbens = P. sujfrutescens, q v. 



P. pseudohumili.s. See under P. humilis. 



P. pubescens stands nearly 2 feet high at its strongest, with hairy 

 leaves, and flowers that vary from white to deep purple. The garden 

 plant, "Southgate Gem," makes us say glad farewell to its parent, if 

 we care for such things. 



P. puniceus may be left out of reasonable count, being a yard -high 

 Mexican with vermilion-scarlet blossoms. 



P. pygmaeus has the catalogue-description of being quite wee, not 

 more than 6 inches high, with " opal " flowers, whatever this, unan- 

 notated, may mean. It possibly comes in the group of P. alpinus. 



P. radicosus forms tufted mats, so dense as to be unbreakable by 

 craft of man or spade, in the moist places of the Coloradan deserts 

 and those of Utah and Wyoming. The leaves are very tiny, packed at 

 the base of the slender erect fine stems of 8 inches or even twice that 

 height. But there are many leaves also on these stems, that end, each, 

 in a compact thyrse of dark-blue tubular flowers about three-quarters 

 of an inch long, with purple anthers. 



P. Richardsonii has a height of 18 inches, with spreading branches 

 and violet blossoms. 



P. riparius — P. alpinus, q.v. 



P. rotundifolius is tall and brilliantly red-flowered, from Mexico. 



P. rubricaulis is yet taller, and merely called " red." 



P. Rydbergii is a strong perennial with horizontal root-stocks that 

 emit vertical branches, from whose crowns come slender stems on 

 specially short leafy shoots ; the stems are smooth, a foot or a foot and 

 a half in length, bearing whorls of pale-blue or purple flowers. The 

 basal leaves are oblong, and rather less, as a rule, than the length of 

 their foot-stalks. (Moist coppices of Colorado and Wyoming.) 



P. Scouleri, though the name is now lost, may here stand as a 

 reminder of the most magnificent of all shrubby Pentstemons, making 

 a loose bush in any sunny place, of perhaps 2 feet high and as much 

 across, composed of wandering fleshyish branches, set with toothed 

 fat foliage, and with the shoots ending in the most glorious and 

 enormous of lilac-rose or lavender Snapdragons, ample and baggy and 

 splendid and incredible, in the early summer and continuing on for 

 many weeks. (It is a form of P. Menziesii.) 



P. sccundiflorus is glaucous-blue, erect, and strict, with stems of not 

 more than 2 feet at the most, with many firm smooth-edged leaves, of 

 which those at the base have stems, and all are obovate-narrow. The 



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