GENUS 5. 



GENTIAN FAMILY. 



7. Dasystephana linearis (Froel.) Britton. 

 Narrow-leaved Gentian. Fig. 3359- 



Gentiana linearis Froel. Gent. 37. 1796. 



Gentiana Saponaria var. linearis Griseb. in Hook. Fl. 



Bor. Am. 2 : 55. 1834. 

 Gentiana rubricaulis Schwein. in Keating's Narr. 



Long's Exp. 2 : 384. 1824. 

 Gentiana linearis var. lanceolata A. Gray, Syn. Fl. 2 : 



Part i, 123. 1878. 



Perennial; glabrous throughout; stem slender, 

 terete, simple, 6'-2 high, leafy. Leaves linear 

 or linear-lanceolate, smooth-margined, acute at 

 both ends, 3-nerved, ii'-3' long, 2"-s" wide; 

 flowers i'-il' high in a terminal cluster of 1-5 

 and sometimes also in the upper axils ; calyx- 

 lobes linear or lanceolate, shorter than the tube; 

 corolla erect, blue, oblong-funnelform, open, its 

 lobes erect, rounded, i"-2" long, slightly longer 

 than the entire or i-2-toothed appendages; an- 

 thers coherent in a tube, or at length distinct; 

 capsule stipitate; seeds winged. 



In bogs and on mountains, New Brunswick and 

 Ontario to Maryland and Minnesota. Ascends to 

 5000 ft. in the Adirondacks. Aug.-Sept. 



8. Dasystephana Grayi (Kusnezow) Brit- 

 ton. Gray's Gentian. Fig. 3360. 



Gentiana linearis var. latifolia A. Gray, Proc. Am. 



Acad. 22 : 309. 1887. 

 Gentiana Grayi Kusnezow, Act. Hort. Petrop. 13: 59. 



1893. 



Perennial; glabrous; stem terete, i-2 high. 

 Leaves rather distant, lanceolate or ovate-lanceo- 

 late, acuminate, rounded at the base, smooth- 

 margined, 2'-3' long, the lower narrower and 

 obtuse; flowers about i high in a sessile term- 

 inal cluster, 2-bracteolate under the calyx ; calyx- 

 lobes unequal, the larger about as long as the 

 tube; corolla greenish blue or bright blue, club- 

 shaped, its lobes ovate, acute or acutish, much 

 longer than the broad i-2-toothed appendages ; 

 anthers coherent, or at length distinct; seeds 

 oblong, winged. 



In wet soil, New Brunswick to western Ontario, 

 Michigan and Minnesota. Referred in our first edi- 

 tion to Gentiana rubricaulis Schwein., which proves 

 to be a synonym of the preceding species. Recorded 

 from central New York. Aug.-Sept. 



g. Dasystephana villosa (L.) Small. Striped 

 Gentian. Fig. 3361. 



Gentiana villosa L. sp. PI. 228. 1753. 

 Gentiana ochroleuca Froel. Gent. 35. 1796. 

 D. villosa Small, Fl. SE. U. S. 931. 1903. 



Perennial, glabrous or nearly so; stem simple, slen- 

 der, terete, 6'-i8' high. Leaves obovate, obtuse or the 

 upper acute, narrowed at the base, faintly 5-nerved, 

 I '-3' long, the lower much smaller; flowers several in 

 a terminal sessile cluster and sometimes also in the 

 upper axils, nearly 2' long, 2-bracteolate under the 

 calyx ; calyx-lobes unequal, linear, longer than the tube ; 

 corolla greenish white, striped within, oblong-funnel- 

 form, open, its lobes triangular-ovate or ovate-lanceo- 

 late, erect, much longer than the oblique entire or 

 i-2-toothed appendages; seeds oval, wingless. 



In shaded places, southern New Jersey and Pennsylvania 

 to Florida and Louisiana! Marsh- or straw-colored gentian. 

 Sampson snake-root. Sept.-Nov. 



