036 



OROBANCHE.E. XIII. TOZZIA. CHELONE^l. I. PENTSTEMON. 



FIG. 63. 



1 T. ALPI'NA (Lin. spec. 844.) 

 stem weak ; flowers axillary, 

 disposed into an interrupted, 

 leafy spike. I/ . H. Native of 

 the Alps" of Jura, and the Py- 

 renees, Switzerland, Austria, 

 Italy, in rough, moist places. 

 D. C. fl. fr. 3. p. 487. Lam. ill. 

 t. 522. Jacq. austr. 2. t. 165. 

 Mentz. pug. t. 9. f. 3, 4. 

 Mor. hist. 3. sect. 12. t. 16. 

 Col. ecphr. 2. p. 49. t. 50. Root 

 formed of many scales (fig. 63. 

 b.) Stem tetragonal, branched. 

 The whole habit succulent and 

 tender. Leaves roundish, bluntly 

 notched, pale. Corollas yellow ; 

 the 3 lower segments spotted 

 of a deeper yellow (fig. 63.) 



Alpine Tozzia. PI. 



Cult. For culture and propagation see Pedicularis, 



p. 626. 



ORDER CLXXII. CHELO'NE^ (this order contains plants 

 agreeing with Chelbne in the characters given below.) D. Don, 

 in edinb. phil. journ. vol. 19. no. 37. July, 1835. Genera of 

 Scrophularineae of authors. 



Calyx 5-parted, permanent. Corolla tubular, hypogynous, 

 irregular, deciduous ; limb 5-lobed. Stamens 4, didynamous, 

 fertile, with the rudiment of a fifth ; anthers 2-celled, mutic ; 

 cells confluent at apex. Stigma undivided. Capsule 2-celled, 

 many-seeded. Seeds erect, angular, or compressed, with membra- 

 nous edges. Albumen fleshy. Embryo erect, foliaceous. Herbs 

 or under shrubs natives of North America. Leaves opposite. 

 Inflorescence panicled, or spicate. This order approaches Big- 

 noniacece and Pedalinece, but is readily distinguished from both 

 in its many-parted calyx, undivided stigma, and erect, albuminose 

 seeds. All the plants contained in this order are extremely 

 showy. This group is well entitled to be retained apart from 

 Scrophularinece, on account of the greater degree of develope- 

 ment of the embryo, its compressed, winged seeds, and of the 

 presence of a rudimentary stamen, all of which characters bring 

 it near to Pedalinece and Bignoniacece, from which it is distin- 

 guished by its albuminous seeds. 



of the genera. 



1 PENTSTE'MON. Seed angular. 



2 CHELONE. Seed surrounded by a membranous margin. 



I. PENTSTE'MON (from irtvTe, pente, five ; and 

 stemon, a stamen ; in reference to the 4 fertile stamens, and the 

 one sterile.) Micheli, gen. 14. and in act. nat. cur. 8. append. 

 214. Schreb. gen. no. 1758. p. 808. Ait. hort. kew. 3. p. 511. 

 Nutt. gen. amer. 2. p. 51. Chelone, Spreng. 



LIN. SYST. Didynamia, Angiospbrmia. Calyx 5-parted, with 

 a distant, solitary bractea. Corolla ventricose, bilabiate. Sta- 

 mens didynamous, with the rudiment of the fifth, which is usually 

 filiform and bearded on the upper side ; anthers separate, usually 

 glabrous. Capsule ovate, 2-celled, 2-valved, many-seeded. 

 Seeds angular. Herbs or under shrubs, natives of North Ame- 

 rica. Leaves opposite, smooth, acuminated, entire, or serrated. 



Flowers paniculately racemose, purple, blue, rose-coloured, 

 white, or pale yellow, rarely scarlet. The corolla is usually 

 bilabiate, oblong, and tubular : the upper lip shorter, 2-lobed, 

 and coarctate ; the orifice generally pubescent ; in several 

 species the corolla appears campanulate, and with the border 

 almost equally 5-lobed ; in these the sterile filament is less con- 

 spicuous. The anthers in some species are woolly or hairy. 



SECT. I. VE'R/E (this section contains the true species of the 

 genus.) Anthers glabrous. 



1. CAMPANULA'!^. Corolla sub-campanulate : limb almost 

 equally 5-lobed. 



1 P. CRISTA'TUM (Fras. cat. 1813. Nutt. gen. amer. 2. p. 

 52.) pubescent ; radical leaves lanceolate, denticulated : cauline 

 ones sessile, linear-oblong, sub-lanceolate ; peduncles axillary 

 and terminal, 1-3-flowered, very short ; calyx rather hairy : 

 segments linear lanceolate, acuminated ; sterile filament sub- 

 exserted, very conspicuously and crestedly bearded, as well as 

 the orifice of the lower lip. If. . H. Native of America, on 

 arid, naked, argillaceous hills, from the confluence of the Teeton 

 river and the Missouri to the mountains. P. erianthera, Pursh, 

 fl. amer. sept. 2. p. 737. Chelone cristata, Spreng. syst. 2. p. 

 813. Corolla large and violaceous, ventricose ; border 5-lobed, 

 spreading. 



Crested Pentstemon. Fl. Aug. Sept. Clt. 1811. PI. to 



1 foot. 



2 P. ca:Rt) v LEUM (Nutt. gen. amer. 2. p. 52.) plant smooth, 

 and glaucous ; radical leaves sub-linear : cauline ones sub-lance- 

 olate-linear, all entire and sessile, minutely pubescent on the 

 margin ; segments of the calyx lanceolate, acute ; peduncles 

 many-flowered ; sterile filament short and bearded above. I/ . 

 H. Native on the plains of the Missouri, near Fort Mandan, 

 and the Indian towns. P. angustifolium, Fraser, cat. 1813. 

 Pursh, fl. amer. sept. 2. p. 738. Chelone caerulea, Spreng. 

 Corollas sub-campanulate, azure blue. 



C/ue-flowered Pentstemon. Fl. July, Sept. Clt. 1811. PI. 

 li foot. 



3 P. A'LBIDUM (Nutt. gen. amer. 2. p. 53.) dwarf; leaves 

 ovate-lanceolate, sub-serrulated, smooth, and sessile ; flowers 

 partly fascicled, axillary, and terminal ; sterile filament slender, 

 and interruptedly bearded ; corolla internally smooth and partly 

 tubular, with an almost equally 5-cleft, spreading limb ; calyx 

 downy, with linear-lanceolate segments. If. H. Native on 

 the plains of the Missouri, common from the confluence of the 

 river Platte to the mountains. P. teretiflora, Fraser, cat. 1813. 

 Stems rather angular. Leaves approximate. Flowers usually 

 white. 



JVhitish-Qov/ered Pentstemon. Fl. June, Sept. Clt. 1823. 

 PI. | to | foot. 



4 P. GRANDIFLORUM (Fras. cat. 1813. Nutt. gen. amer. 2. p. 

 52.) smooth and glaucous ; leaves entire : radical ones sub- 

 oval : cauline stem-clasping, roundish-oval, with an abrupt 

 point ; flowers large, mostly solitary and axillary ; corolla cam- 

 panulate, with a 5-lobed, spreading limb ; sterile filament partly 

 pubescent at the summit. If.. H. Native of America, on the 

 plains of the Missouri ; common from the confluence of the 

 river Platte to the mountains ; also near the prairie du chien 

 Mississippi. P. Bradburii, Pursh, 2. p. 738. Chelone Brad- 

 burii, Spreng. A beautiful species. Flowers variously tinged, 

 as large as those of Digitalis purpurea, which they not unaptly 

 resemble. 



Great-Jiorvercd Pentstemon. Fl. July, Sept. Clt. 1811. PI. 



2 to 3 feet. 



5 P. SPECIOSUM (Dougl. in hot. reg. t. 1270.) glaucous, gla- 



