188 



GENTIANEJE. XL EURYTHALIA. XII. PLEUROGYNA. XIII. ERICALA. 



Europe, as of Valais, even to Siberia. Gentiana glacialis, Vill. 

 dauph. 2. p. 532. Free}, gent. p. 98. Wahl. lapp. p. 69. 

 carp. p. 75. Gent, nivalis, Lam. diet, suppl. 2. p. 733. no. 68. 

 Hall. helv. 652. Hippion longepedunculatum, Schmidt, in Roam, 

 arch. 1. p. 21. t. 2. f. 5. Gent, nana, All. pedem. 1. p. 99. 

 no. 360. Nearly allied to E. amarella. Corolla deep blue, 

 having 2 small fringed segments to each segment of the corolla. 

 Capsule elongated. 



Var. ft, tenella ; corolla 4-cleft, bearded ; stem subdichoto- 

 mous ; peduncles very long ; leaves subovate, bluntish. 0. H. 

 Native of the north of Europe. Gent, tenella, Frcel. gent. p. 

 96. Willd. spec. 1349. Pers. syn. 1. p. 286. Rottb. act. 

 hafn. 10. p. 436. t. 2. f. 6. Townson, trav. hung. t. 14. Vahl, 

 act. soc. hafn. 2. p. 2. t. 21. Fl. dan. t. 318. Gent, tetra- 

 gona, Lam. ill. no. 2233. Gmel. syst. p. 462. Roth. germ. 2. 

 p. 290. Hippion tenellum, Schmidt, in Roem. arch. 1. p. 19. 

 Gent. Konigii, Gunn. fl. norv. no. 288. Gent, campestris /3, 

 Lin. syst. p. 269. no. 34. Gmel. syst. p. 460. no. 7. Corollas 

 deep blue. 



Var. y, uniflbra ; stem simple, 1-flowered. 0. H. Gent, 

 glacialis ft, Froel. gent. p. 98. 



Icy Eurythalia. Fl. Aug. Clt. 1819. PI. i to | foot. 



1 3 E. DICHOTOMA ; stem tetragonal, dichotomously branched ; 

 leaves subovate, acute ; peduncles very long ; corolla 5-cleft, 

 with a bearded throat, and oblong, obtuse, hardly spreading seg- 

 ments. . H. Native of Siberia, from the Lena to the Eastern 

 Ocean. Gent, dichotoma, Pall. fl. ross. 2. p. 110. Froel. gent, 

 p. 100. Hippion dichotomum, Schmidt. Gent, borealis, Ledeb. 

 act. nat. soc. mosc. 3. p. 357. Gent, glacialis, Led. fl. alt. 1. p. 

 288. Gmel. sib. 4. p. 106. t. 51. f. B. This species differs from 

 E. glacialis in the stem being finely forked, filiform, and rather 

 flexuous. Leaves at all the forks, and on the peduncles. 

 Calyx divided almost to the base ; segments lanceolate, acute. 

 Corolla .purplish ; tube longer than the calyx. The corollas 

 vary to 4-cleft, and to a white colour. Said by Cham, in 

 Linnsea, 1. p. 182. to be the same as E. glacialis. 



Dichotomous Eurythalia. PI. \ foot. 



14 E. NA'NA (Borkh. in Roem. arch. 1. p. 28.) stem tetra- 

 gonal, decumbent, filiform, dichotomous, leafy at bottom, with 

 ascending, tufted branches ; radical leaves obovate : cauline ones 

 ovate, obtuse ; peduncles hardly the length of the flowers ; 

 corolla 5-cleft, rarely 4-cleft, campanulate, with a bearded 

 throat, and ovate, acutish segments. 0. H. Native of the 

 alps of Carinthia and Salzburg, near the limits of perpetual 

 snow. Gent, nana, Wulf. in Jacq. misc. 1. p. 161. t. 18. f. 3. 

 Froel. gent. p. 102. Hippion nanum, Schmidt, in Roem. arch, 

 p. 20, t. 3. f. 10. Root yellowish. Radical leaves usually 4, 

 rarely more, rosulate. Calycine segments ovate, lanceolate, acut- 

 ish, nearly equal. Corolla with a whitish tube, nearly the length 

 of the calyx, and a deep violaceous limb, and a white bipartite 

 beard. Stigmas ovate. 



Var. ft; stem simple, shorter than the flower. 0. H. Froel. 

 gent. 1. c. 



Var. y ; corollas white. . H. Froel. gent. 1. 

 Dwarf Eurythalia. Fl. July, Aug. PI. 1 to 2 inches. 

 Cult. For culture and propagation see Pleurogyna, below. 



XII. PLEURO'GYNA (from jrXevpa, pleura, a side, and 

 yvvn, gyne, a female ; in reference to the 2 stigmas being adnate 

 longitudinally to both sides of the ovarium). Eschsch. mss. 

 ex Schlecht. in Linnaea. 1. p. 187. Gentiana species of authors. 

 Swertia species of Linnaeus. 



LIN. SYST. Pentandria, Digynia. Calyx 5-cleft. Corolla 

 rotate, spreading, 5-cleft ; with a fringed or scaly throat. Sta- 



mens 5 ; filaments filiform ; anthers free, incumbent. Stig- 

 mas 2, adnate longitudinally to the sutures on both sides of 

 the ovarium. Capsule elongated, 1 -celled, 2-valved. Seeds 

 minute, globose, scobiform. Annual plants. Leaves opposite, 

 decussate : radical ones rosulate. Flowers blue. 



1 P. CARINTHI'ACA; stem short, tetragonal, dichotomous, leaves 

 ovate-lanceolate, obtuse ; peduncles very long, naked ; corolla 

 rotate, 5-cleft ; with bristles in the throat. 0. H. Native of 

 Carinthia, and Salzburg, on the tops of the alps. Gentiana 

 Carinthiaca, Froel. gent. p. 103. Willd. spec. 1. p. 1350. 

 Swertia Carinthiaca, Wulf. in Jacq. misc. 2. p. 53. t. 6. Lin. 

 syst. ed. 14. Murr. p. 266. Root yellowish. Stem slender. 

 Branches and peduncles erect or ascending. Radical leaves 4, 

 rosulate, oblong-ovate : cauline ones twin above the base. Ca- 

 lycine segments cut almost to the base, ovate-lanceolate, obtuse, 

 nearly equal, shorter than the corolla. Segments of corolla 

 ovate, acute, sky blue above, and white and violaceous beneath. 

 Bristles in the throat short and white. Capsule elongated, an- 

 gular. Stigmas obtuse. 



Corinthian Pleurogyna. Fl. July, Aug. Clt. 1817. PI. i ft. 



2 P. SULCA'TA ; stem tetragonal, dichotomous ; leaves linear ; 

 segments of corolla oblong, acute ; corolla rotate, 5-cleft : with 

 scales in the throat; calycine segments lanceolate-linear. 0. 

 H. Native of Iceland and Norway. Gent, sulcata, Willd. 

 spec. 1. p. 1351. Swertia sulcata, Rottb. act. hafn. 10. p. 438. 

 t. 1. f. 4. Retz. scan. ed. 2. no. 309. Swertia rotata, Gunn. 

 norw. no. 1077. fl. dan. t. 343. Gent, rotata ft, Froel. gent, 

 p. 106. Corolla length of calyx. Stem spicately branched, many- 

 flowered, leafy, ex Fl. dan. 1. c. Ovarium compressed, furrowed. 



/Wronjerf-capsuled Pleurogyna. PI. \ to ^ foot. 



3 P. ROTA'TA ; stem simple or branched from the middle, 

 obsoletely tetragonal ; leaves ovate-lanceolate, acutish, strict ; 

 segments of calyx ovate-lanceolate, one half shorter than the co- 

 rolla. . H. Native throughout Siberia, in humid places. 

 Gentiana rotata, Frcel. gent. p. 105. Led. fl. alt. 1. p. 289. Swertia 

 rotata, Lin. spec. 1. p. 1351. Pall. fl. 2. t. 89. f. 1. and 2. 

 Gmel. sib. 4. t. 53. f. 1. Root yellow, fascicled. Branches 

 sub-fastigiate. Radical leaves 4, rosulate, obovate, obtuse : 

 cauline ones lanceolate, acutish, sub-trinerved, shorter than the 

 internodes. Segments of calyx linear-acute, 3-nerved, a little 

 shorter than the corolla. Corolla blue, 5-parted. Scales 10 in 

 the throat, variously cut. Ovarium cylindrical, compressed, 

 furrowed in the middle. 



/fo/rtVe-flowered Pleurogyna. PI. g to 1 foot. 



4 P. STELLERIA'NA (Cham, et Schlecht, in Linnaea. 1. p. 188.) 

 leaves ovate, acute ; calycine segments ovate, lanceolate, acute, 

 one half shorter than the corolla. . H. Native of eastern 

 Siberia, Kamtschatka, and Caucasus. Swertia rotata, Pall. fl. 

 ross. t. 89. f. 3. Bieb. cauc. 1. p. 199. Gmel. sib. 4. p. 112. 

 t. 52. f. 2. Stem many-flowered, branched from the base ; 

 branches fastigiate. Corolla 5-cleft. 



Steller's Pleurogyna. PI. 5 to \ foot. 



Cult. The species of this genus are almost uncultivatable ; 

 although several of them are extremely common in chalky 

 parts of Britain. We would recommend the seed to be sown 

 in chalky soil, or soil well mixed with chalk or marl, in which 

 they will probably grow in a cultivated state. 



XIII. ER1CA V LA (meaning unknown to us). Renealm. 

 specim. p. 75. t. 68. Ericoila, Borkh. in Roem. arch. 1. p. 27. 

 Gentiana species of authors. Hippion species of Schmidt. 



LIN. SYST. Pentandria, Digynia. Calyx 3-5-cleft. Corolla 

 funnel-shaped or salver-shaped, 8-10-cleft; the alternate seg- 

 ments usually smaller, entire, bifid or fringed, but never bearded. 

 Stamens 4-5 ; filaments filiform. Anthers incumbent, linear 



