Gentlana. GENTIAN ACE.E. 119 



-H- -H- Setaceous-fimbriate crown, &c., as in the preceding subdivision; but glands on the base of 

 the corolla inure or less manifest: calyx-lobes very small and short on the truncate spathaceous 

 tube. 



Q. "Wlslizeni, Engelm. A foot or less high, with the habit and many-flowered thyrsoid- 

 paniculate inflorescence of G. quinqueflora, but smaller in all its parts : leaves from lanceo- 

 late to ovate (an inch or less long), with obtuse or subcordate base : calyx barely half the 

 length of the tube of the corolla ; its scarious tube (1 lines long) split down one side, in 

 age sometimes dejected, much longer than the 5 unequal linear herbaceous teeth : corolla 

 nearly salverform, pale purplish, 4 or 5 lines long; its lobes oblong-ovate, copiously fringed 

 above the base: capsule sessile: seeds globose. Trans. Acad. St. Louis, ii. 215, t. 7. 

 Sierra Blanca, S. Arizona, Rothrock, a broad leaved form, the glands less evident. (Ad- 

 jacent Mex., Wislizemts.) 



M- -i-f- -H- No crown to the corolla ; but its lobes tipped with a setiform point or sharp acumination 

 and the glands at bottom of the tube manifest. Arctophila, Griseb. 



= Dwarf species of high northern or alpine regions : cauline leaves only 2 to 4 rather distant pairs : 

 calyx 4-5-parted. 



G. aurea, L. Leaves ovate, 5-7-nerved ; the margins and those of the spatulate-lanceolate 

 calyx-lobes smooth : corolla yellow, violet, or commonly white, 4 lines long, little surpass- 

 ing the calyx; its lobes almost as long as the campanulate tube. Fl. Dan. t. 344; Herder, 

 1. c. 155. ~G. involitcrata, Rottb. in Act. Hafn. x. 344, t. 1, fig. 2. G. Aleutica, Cham. & 

 Schlecht. in Linn. i. 175, fide Herder. G. tfnalaschkensis, Cham, in Bunge, 1. c. 240, t. 9, 

 fig. 2. Unalaschka, &c. Also Sitka, according to Herder. (High northern Siberia to 

 Lapland, Iceland, and Greenland.) 



G. propinqua, Richards. Stem slender, 2 to 7 inches high, mostly branched from the 

 base : leaves from oblong to lanceolate and the lowest spatulate, obscurely 3-nerved, the 

 edges and those of the calyx smootli : flowers chiefly 4-merous and rather slender-pedi- 

 celled : lobes of the calyx unequal ; two of them ovate or oblong, the others linear-lanceo- 

 late, the larger rather shorter than the tube of the corolla : the latter bluish, narrow, 4 to 

 9 lines long, its lobes ovate or in age lanceolate, sometimes erose-denticulate. App. 

 Frankl. Journ. 734 ; Griseb. 1. c. ; Hook. Fl. t. 150 ; Herder, 1. c. G. Rurikiana, Cham. & 

 Schlecht. in Linn. i. 170. G. set! flora, Bunge, 1. c. t. 9, fig. 4. Labrador to Bear Lake, the 

 northern Rocky Mountains, Kotzebue Sound, &c. (Adjacent Asia.) 



Var. densiflora, Griseb, 1. c., in alpine swamps of the Rocky Mountains (Drum- 

 mond), a more condensed and leafy plant, occurring with the ordinary form, is said to differ 

 from the preceding species only in the inequality of the calyx-lobes. 



G. arctophila, Griseb. Stem an inch to a span high : leaves ovate-oblong or the low- 

 est obovate ; the edges and especially those of the calyx-lobes scabrous : corolla 7 to 10 

 lines long ; the round-ovate lobes more acuminate-cuspidate : otherwise very like large- 

 flowered G. propinqua (to which Herder refers it). Gent. 251, & in Hook. Fl. ii. 61, t. 149, 

 with a var. densiflora, having cordate-ovate leaves, and two of the calyx-lobes unusually 

 large. Arctic sea-coast, Richardson. The variety in the alpine region of the northern 

 Rocky Mountains, Drummond. 



= = Taller and leafy : calyx 5-cleft : capsule slender-stipitate. 



G. quinqueflora, Lam. A foot or two high ; the larger plants branching : leaves ovate- 

 lanceolate, with subcordate partly clasping base, 3-7-nerved, the upper acute or cuspi- 

 date-acuminate : inflorescence thyrsoid-paniculate ; the clusters 3-5-flowered : calyx one 

 fifth or fourth the length of the narrow funnelform bright blue corolla; its lobes linear- 

 subulate: corolla half to three fourths inch long; its lobes ovate-triangular, short. Diet, 

 ii. 643 ; Frosl. Gent. 51 ; Griseb. 1. c. G. quinqwfolia, L., doubtless meant for quinqufflora. 

 G. amarelloides, Pursh, Fl. i. 186. Moist hills, Canada, Maine to Michigan, and along the 

 Alleghanies to Florida. 



Var. OCCidentalis, Gray. Sometimes 2 or 3 feet high and paniculately much 

 branched: inflorescence more open : calyx-lobes more foliaceous, linear or lanceolate, un- 

 equal, reaching to the middle of the broader funnelform corolla. Man. ed. 1, 359, ed. 5, 387. 

 G. quinqueflora, Hook. Bot. Mag. t. 3496, mainly. Ohio to Minnesota and south to Ten- 

 nessee and Louisiana. 



Var. parviflora, Raf., collected in Virginia, Kentucky, &c. (Griseb. in DC. 1. c. 100), 

 is a depauperate and small-flowered state of the preceding variety, and is G. amarelloides, 

 Michx. Fl. i. 175. 



