636 OROBANCHEA. XIII. Tozzta. 
1 T. AzPrNA (Lin. spec. 844.) 
stem weak; flowers axillary, 
disposed into an interrupted, 
leafy spike. )/. 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. Pl. 
Cult. For culture and propagation see Pediculdris, p. 626. 
FIG. 63. 
Orver CLXXII, CHELO'NEJE (this order contains plants 
agreeing with Chelóne in the characters given below.) D. Don, 
in edinb. phil. journ. vol. 19. no. 37. July, 1835. Genera of 
Scrophularineze 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- 
noniàceæ and Pedalinee, 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 
Scrophularinec, 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 Pedalinee and Bignoniacee, from which it is distin- 
guished by its albuminous seeds. 
Synopsis of the genera. 
1 PENTSTE`MON. 
2 CHELÓNE. 
Seed angular. 
Seed surrounded by a membranous margin. 
I. PENTSTEMON (from zevre, pente, five; and ornpwr, 
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.  Chelóne, Spreng. 
Lin. syst. Didyndmia, Angiospérmia. 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. 
CHELONEJX. I. PrwrsrEMON. 
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'ræ (this section contains the true species of the 
genus.) Anthers glabrous. 
$ 1. CauPANULA' TE. 
Corolla sub-campanulate : limb almost 
equally 5-lobed. 
1 P. crisra‘rum (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. Y%. H. Native of America, on 
arid, naked, argillaceous hills, from the confluence of the Teeton 
river and the Missouri to the mountains. P. erianthéra, 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. Pl. 3 to 
1 foot. 
2 P. cmru'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. Y. 
H. Native on the plains of the Missouri, near Fort Mandan, 
and the Indian towns. P. angustifdlium, Fraser, cat. 1813. 
Pursh, fl. amer. sept. 2. p. 738. Chelone cærùlea, Spreng. 
Corollas sub-campanulate, azure blue. 
Blue-flowered Pentstemon. FI. July, Sept. PI. 
Difo0t ma 
3 P. A'Lprpuw (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. 2%. H. Native on 
the plains of the Missouri, common from the confluence of the 
river Platte to the mountains. P. teretiflóra, Fraser, cat. 1813. 
un rather angular. Leaves approximate. Flowers usually 
white. / 
Whitish-flowered Pentstemon. 
Pl. 4 to $ foot. 
4 P. GRANDIFLÓRUM (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. ^4. 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. Bradbürii, Pursh, 2. p. 738. Chelóne Brad- 
bürii, Spreng. A beautiful species. Flowers variously tinged, 
as large as those of Digitàlis purpürea, which they not unaptly 
resemble. 
Great-flowered Pentstemon. Fl. July, Sept. Clt. 1811. Pl. 
2 to 3 feet. 
5 P. sreciòsum (Dougl. in bot. reg. t. 1270.) glaucous, gla- 
Cit. 1811. 
Fl. June, Sept. Clt. 1823. 
