CHELONEJE. I. PENTSTEMON. 



639 



brous ; peduncles 1-2- flowered, longer than the bracteas, the 

 whole forming a secund raceme ; calyx downy, with lanceolate 

 segments ; corolla ventricose, rather pilose, glandless ; palate 

 villous ; sterile filament bearded ; stamens length of tube of 

 corolla. 1i . F. Native of Mexico, between Toluca and Tian- 

 quillo, at the altitude of 1500 hexapods ; and of Cuba, near the 

 Havana. P. elegans, G. Don, in Loud. hort. brit. p. 243. 

 Chelone elegans, H. B. et Kunth, nov. gen. 2. p. 364. Superior 

 leaves half stem-clasping. Corollas lilac, downy; palate spotted. 

 This species differs from P. campanulatum, in the corolla being 

 paler, and destitute of glands. 



Pretty Pentstemon. Fl. June, Sept. Clt. 1827. PI. lj 

 foot. 



28 P. ROSEUM (G. Don, in Loud. hort. brit. p. 243.) herba- 

 ceous ; leaves sessile, glabrous, ovate-lanceolate, sharply serru- 

 lated, acuminated ; superior leaves broader ; peduncles gene- 

 rally 3-flowered ; superior filaments flat at the base ; corollas 

 rather hairy ; lower lip of corolla bearded ; sterile filament 

 bearded at top. If. F. Native of Mexico. P. angustifo- 

 lium, Lindl. bot. reg. 1122. but not of Kunth. Chelone rosea, 

 Cerv. mss. Sweet, fl. gard. 230. Inflorescence rather glandu- 

 lar. Panicle thick, many-flowered. Corolla tubular, some- 

 what ventricose, of a bright rose-colour, glandular, like the top 

 of the plant. 



.Rosy-flowered Pentstemon. Fl. June, Sept. Clt. 1825. PI. 

 H foot. 



29 P. KU'NTHII (G. Don, in Loud. hort. brit. p. 243.) stem 

 and leaves quite glabrous ; leaves linear, sharply serrulated, 

 spreadingly recurved ; peduncles 1-2-flowered, hairy, disposed 

 in a simple hairy panicle ; calycine segments linear-lanceolate, 

 hairy ; corolla downy ; lower lip densely bearded at the base ; 

 sterile filament bearded at apex. If. F. Native of Mexico, 

 near Moran and Omitla, at the altitude of 1320 hexapods. Che- 

 lone angustifolia, H. B. et Kunth, nov. gen. amer. 2. p. 365. 

 Leaves sessile, somewhat stem-clasping. Corolla purple. Sta- 

 mens hardly exserted. 



Kunlh's Pentstemon. Fl. July, Sept. Clt. 1825. PI. 2 to 4 

 feet. 



30 P. CAMPANULA V TUM (Willd. spec. 3. p. 228.) stem and 

 leaves glabrous, linear-lanceolate, sharply serrated ; peduncles 

 secund, disposed in a terminal panicle ; calycine segments lan- 

 ceolate ; corollas bearded ; sterile filament bearded at top. 11 . 

 H. Native of Mexico, near Santa Rosa de La Sierra, and Los 

 Joares, at the altitude of 1300 hexapods. Jacq. schrenbr. 3. t. 

 362. Sims, bot. mag. 1878. Chelone campanulata, Cav. icon. 

 1. p. 18. t. 29. Chelone campanuloides, Andr. bot. rep. t. 40. 

 Stem downy at top. Leaves glabrous. Calyx downy. Throat 

 of corolla bearded. Corollas pale purple. 



Campanw/ate-flowered Pentstemon. Fl. March, Oct. Clt. 

 1794. PI. 1| to 2 feet. 



31 P. ATROPURPU'REUM (G. Don, in Loud. hort. brit. p. 243.) 

 shrubby ; stem rather flexuous, shining, beset with glandular 

 pili at top ; leaves sessile, sharply serrulated, glabrous : lower 

 ones lanceolate, attenuated at both ends : superior ones ovate, 

 acuminated, stem-clasping ; peduncles axillary, usually 3-flow- 

 ered ; calyxes and corollas clothed with glandular pubescence ; 

 corolla bearded ; sterile filaments bearded at top. TJ. . H. Na- 

 tive of Mexico. Chelone atropurpurea, Sweet, fl. gard. t. 235. 

 Flowers dark purple, the whole forming a panicle. 



Dark-purple-fiovtered Pentstemon. Fl. July, Sept. Clt. 

 1825. PI. 2 to 3 feet. 



32 P. GENTiANof DES ; stem downy at top ; leaves lanceolate, 

 quite entire, glabrous ; panicle composed of 1-2-3-flowered pe- 

 duncles ; calycine segments ovate ; corollas beardless ; sterile 

 filament glabrous, if. H. Native of Mexico, on Mount To- 

 luco, at the altitude of 1750 hexapods. Chelone gentianoides, 



H. B. et Kunth, nov. gen. amer. 2. p. 363. t. 172. Stem and 

 branches downy. Leaves 4 inches long, and 6-8 lines broad. 

 Corolla violaceous, downy outside ; tube short ; throat large ; 

 limb bilabiate ; superior lip 2-lobed : lower one trifid, beardless. 

 Anthers glabrous. Stamens inclosed. 



Gentian-like Pentstemon. Fl. July, Sept. Clt. 1825. PI. 3 

 to 4 feet. 



SECT. II. ERIANTHE'RA (from tpwv, erion, wool ; and avOtjpa, 

 anthera, an anther ; the anthers are ciliated or downy, not gla- 

 brous, as in the last section. 



33 P. HETEROPHY'LLUM (Lindl. bot. reg. 1899.) leaves glau- 

 cescent, quite entire : lower ones linear-lanceolate : superior 

 ones linear ; raceme twiggy ; sepals ovate, acuminated ; corolla 

 ventricose, beardless ; sterile stamen glabrous ; anthers sagit- 

 tate, fringed at top. If. H. Native of California, Douglas. 

 Leaves hardly ever serrulated. Peduncles 1-2-flowered, bi- 

 bracteate above the middle. Corolla bilabiate ; sterile filament 

 sub-emarginate. 



Variable-leaved Pentstemon. Fl. June, Sept. Clt. 1834. 

 PI. 1 i to 2 feet. 



34 P. GLA'BRUM (Pursh, fl. amer. sept. 2. p. 738.) very 

 smooth ; leaves sessile, ovate-lanceolate, entire, having the mar- 

 gins partly undulated ; peduncles many-flowered, secund ; seg- 

 ments of calyx roundish-oval, acuminated; corolla subcampanu- 

 late ; sterile filament slightly bearded under the retuse apex ; 

 anthers pubescent. If. H. Native of North America, in arid 

 soils near the confluence of the Shian river, and towards the 

 sources of the Columbia river. Curt. bot. mag. 1672. P. 

 erianthera, Nutt. gen. amer. 2. p. 52. but not of Pursh. Flow- 

 ers numerous, purple. 



Glabrous Pentstemon. Fl. July, Sept. Clt. 1811. PI. 1J 

 foot. 



35 P. GLANDULOSUM (Dougl. in bot. reg. 1262.) plant cloth- 

 ed with glandular pubescence ; radical leaves ovate, coarsely 

 toothed : cauline ones stem-clasping, acute, almost quite entire ; 

 peduncles many-flowered ; calyx loose, with ovate segments ; 

 corolla ventricose ; anthers ciliated ; sterile filament glabrous. 

 T/ . H. Native of North America, on the banks of the Koos- 

 kooskee river, 6300 feet above the level of the sea. Radical 

 leaves on long petioles : cauline ones cordate-ovate. Peduncles 

 forming a racemose panicle. Corolla large, pale rose-coloured, 

 striped with purple inside. Anthers white. Capsule glabrous, 

 equal in length to the calyx. 



Glandular Pentstemon. Fl. June, July. Clt. 1827. PI. 2 

 to 21 feet. 



36 P. VENU'STUM (Dougl. in bot. reg. 1309.) stem suflruti- 

 cose, erect, glabrous ; leaves sessile, ovate-lanceolate, acumi- 

 nated, denticulated, glabrous ; peduncles many-flowered, the 

 whole forming a panicle ; calyx glabrous ; corolla ventricose, 

 ciliated ; anthers pilose ; sterile filament bearded at top. I? . 

 H. Native of North-west America, in dry channels of rivers, 

 among the mountains. Very nearly allied to P. dijfusum ; but 

 differs in the stem being more erect ; in the leaves being sessile, 

 longer, straighter ; in the corolla being of a more obscure co- 

 lour ; in the calyx being glabrous ; and in the anthers being 

 pilose. 



Graceful Pentstemon. Fl. June, Sept. Clt. 1827. PL 2 

 feet. 



37 P. RICHARDSONII (Dougl. in bot. reg. 1121.) herbaceous ; 

 leaves sessile, pinnatifid ; peduncles few-flowered ; calyx cloth- 

 ed with glandular pubescence : with ovate-acute segments ; co- 

 rolla ventricose ; anthers ciliated ; sterile filament bearded with 

 a few hairs at apex. If. H. Native of North-west America, 

 on dry rocks in the vicinity of the Columbia. Hook. bot. mag. 



