GENTIANE.E. II. HALEXIA. HI. AGATHOTES. 



177 



Capsule silique-fortned. This plant, from its grateful bitterness, is 

 received among the domestic remedies of the inhabitants of Siberia. 



Siberian Halenia. Fl. July, Sept, Clt. 1817. PL |to2ft. 



C- H. MICHAUXIA'NA ; stem branched, quadrangular ; branches 

 short : cauline leaves ovate, 3-nerved ; corollas campanulate ; 

 spurs deflexed. $ . H. Native of Canada, in swamps, and 

 round the lakes of the western parts of the United States. 

 Swertia corniculata, Micbx. fl. amer. bor. 1. p. 97. Pursh, 1. 

 p. 100. Swertia Michauxiana, Rcem. et Schultes, syst. 6. p. 

 130. Swertia Americana, Spreng. syst. 1. p. 861. Flowers green- 

 ish yellow. 



Michaux's Halenia. Fl. July. Clt. 1824. PI. | to 1 foot. 



3 H. PAVOXIA'NA ; tufted; stems slender, tetragonal, simple 

 or branched, nearly naked ; flowers terminal, umbellate ; leaves 

 petiolate, lanceolate-linear, nerveless : cauline ones conniving 

 at the base ; corolla subcampanulate ; spurs acute, diverging, 

 longer than the corolla. Q . G. Native of Peru, on the Andes. 

 Swertia umbellata, Ruiz et Pav. fl. per. 3. p. 21. t. 242. f. b. 

 Peduncles 5-10 together, tetragonal, rather drooping. Umbels 

 solitary or twin. Calycine segments lanceolate, acutish, with 

 scabrous margins. Corolla yellow ; with ovate, acuminated 

 segments. Capsule conical. Seeds lenticular. 



Paron's Halenia. PI. 1 to 2 feet. 



4 H. BREVICORNIS ; stem erect, branched, terete; leaves 

 linear-lanceolate, 3-nerved, on short petioles ; flowers axillary 

 and terminal, solitary, pedicellate ; calycine segments linear ; 

 corolla funnel-shaped ; spurs very short. Q. G. Native of 

 Quito, in temperate places, near Chilla. Swertia brevicornis, 

 H. B. et Kunth, nov. gen. amer. 3. p. 174. Leaves 1^ inch 

 long : superior ones sessile-linear. Corolla pale yellow : with 

 ovate, acute segments. Capsule oblong, compressed. Seeds 

 roundish. 



Short-horned Halenia. Fl. May. PI. 7 to f foot. 



5 H. PARVIFLORA; stem erect, quadrangularly terete, simple; 

 cauline leaves linear-lanceolate, S-nerved, sessile ; flowers pani- 

 culately spicate, twin ; calycine segments linear ; corolla -ro- 

 tately campanulate, with a tubercle at the base of each segment 

 instead of spurs. Q. F. Native of Mexico, near the town of 

 Guanaxuato. Swertia parviflora, H. B. et Kunth, nov. gen. 

 amer. 3. p. 175. Corolla yellow ; with ovate, acute segments. 

 Capsule oblong, compressed. 



Small -flowered Halenia. Fl. Sept. PI. to f foot. 



6 H. GRA'CILIS : stem erect, tetragonally terete ; leaves ob- 

 long, 3-nerved : superior ones sessile, ovate-oblong ; flowers 

 terminal and axillary, twin, pedicellate ; calycine segments obo- 

 vate-spatulate ; corolla subcampanulate; spurs pendulous, erect- 

 ish, conical. 0. F. Native along with the preceding. Swertia 

 gracilis, H. B. et Kunth, nov. gen. amer. 3. p. 176. Leaves 

 8-9 lines long. Corolla yellow ; ? with ovate, acute segments. 



Slender Halenia. PI. f foot. 



7 H. PLAXTAGISEA ; stems erect, quadrangular, simple, or 

 fastigiately branched; radical leaves lanceolate, 3-nerved, on 

 long petioles: cauline leaves -linear, sessile; flowers terminal 

 and axillary, solitary, pedicellate ; calycine segments linear-spa- 

 tulate ; corolla campanulate; spurs pendulous. 7/ . G. Na- 

 tive of Mexico, on the burning mount Jorullo. Swertia plan- 

 taginea, H. B. et Kunth, nov. gen. amer. 3. p. 175. Radical 

 leaves 3 inches long. Corolla yellow ; with . ovate obtuse seg- 

 ments. Seeds roundish. 



Plantain-like Halenia. Fl. Sept. PI. f foot. 



8 H. ASCLEPIA'DEA ; stems erectish, angularly terete, simple ; 

 leaves 3-nerved : radical ones lanceolate, petiolate : cauline ones 

 linear, sessile ; flowers subumbellate, pedicellate ; calycine seg- 

 ments lanceolate ; corolla campanulate ; spurs conical, ascend- 

 ing, spreading. 1. G. Native of New Granada, near Santa 

 Fe de Bogota, on the declivities of mountains. Swertia ascle- 



VOL. IV. 



piadea, H. B. et Kunth, nov. gen. amer. 3. p. 175. Leaves 

 20 lines long. Corolla yellow ; with ovate-oblong, obtuse seg- 

 ments. 



Asclepias-Kke Halenia. Fl. July. PI. 1 foot. 



9 H. HYPERICOIDES ; stems procumbent, branched, leafy ; 

 leaves oblong-lanceolate, 3-nerved : upper ones sessile ; flowers 

 panicled, twin, pedicellate ; calycine segments linear-lanceolate ; 

 corolla subcampanulate ; spurs pendulous, hooked at top. Tf. . G. 

 Native of New Granada, near the mine called Zipaquira, at the 

 altitude of 1400 hexapods. Swertia hypericoides, H. B. et 

 Kunth, nov. gen. amer. 3. p. 176. Leaves 8-10 lines long ; 

 having the petioles connate, and sheathing at the base. Corolla 

 yellow ? ; with ovate, acute segments. Capsule oblong, obtuse, 

 compressed. Seeds roundish. 



St. John's-tcort-Kke Halenia. Fl. Sept. PL proc. 



10 H. ELLIPTICA (D. Don, mss.) stem terete, branched ; 

 leaves elliptic-obtuse, 5-nerved : lower ones petiolate ; calycine 

 segments obtuse, short ; spurs filiform, longer than the corolla. 

 It . F. Native of the Himalaiah and Kamaon. Swertia cor- 

 niculata, Royle, herb. Swertia centrostemma, Wall. cat. no. 

 4385. Stem 1-1^ foot. Leaves an inch and a half long. 

 Flowers pale. 



Elliptic-leaved Halenia. PI. 1 to 2 feet. 



11 H. ELONGA V TA (D. Don, mss.) leaves linear-lanceolate, 

 acute, 3-nerved, attenuated at the base; calycine segments 

 spatulate ; spurs short, straight, shorter than the corolla. Q . H. 

 Native of Mexico. 



Elongated Halenia. PI. 1 foot. 



12 H. PIXIFOLIA (D. Don, mss.) tufted ; stems erect, simple ; 

 leaves linear, acute, channelled ; flowers umbellate ; calycine 

 segments ovate-lanceolate, acute ; spurs straight, twice shorter 

 than the corolla, y. . F. Native of Peru, on the Cordilleras 

 of the Andes. Swertia pinifolia, Ruiz et Pav. in herb. Lamb. 

 Leaves very narrow ; with scabrous edges. Flowers golden 

 yellow. 



Pine-leaved Halenia. PL | to foot. 



Cult. Elegant plants, requiring almost the same treatment 

 and soil as Srcerlia. The species require to be grown in pots, 

 well drained with sherds, and filled with a mixture of peat and 

 sand, placed in pans of water, in order to keep the mould con- 

 stantly moist. 



III. AGATHO'TES (from aya6onjc, agathotes, goodness ; in 

 reference to the quality of the species). D. Don, mss. Swertia 

 species, Wall. Gentiana species, Roxb. 



LIN. SYST. Tetrandria, Monogynia. Corolla rotate, 4- 

 parted ; segments ovate, acuminated, furnished each with 2 

 oblong, parallel, fringed scrobicles at the base. Stamens 4 ; 

 filaments subulate, glabrous, compressed. Anthers oblong, in- 

 cumbent, with 2 parallel cells. Ovarium ovate. Style distinct ; 

 stigma 2-lobed : lobes roundish, thick, pruinose. Capsule 1- 

 celled, dehiscing by 2 valves at apex. Seeds minute, globose, 

 smooth. Annual, erect, branched herbs. Stems terete, smooth. 

 Leaves opposite, sessile, ovate -lanceolate, acuminated, 5-nerved, 

 membranous, 3-6 inches long : superior ones stem-clasping. 

 Flowers loosely panicled, drooping, greenish yellow, with a dark 

 purple base. All the species contain an agreeable bitter. 



1 A. ALA V TA (D. Don, mss.) stem tetragonal, winged ; leaves 

 ovate ; scrobicles of corolla orbicular, conferruminated, with 

 downy edges. O- H. Native of Nipaul. Flowers yellow. 



Wmged-stemmed Agathotes. PL 2 feet. 



2 A. XERVOSA ; stem and branches tetragonally winged ; 

 leaves 3-nerved : lower ones ovate, obtuse, petiolate, becoming 

 more lanceolate and smaller as they ascend the stem ; scrobicles 

 combined, ciliated on the edges. Q, F. Native of Nipaul, 

 and Kamaon. Swertia nervosa, Wall. cat. no. 4383. Flowers 



AA 



