GENTIANACE \l". 



Vol. III. 



5. Gentiana propinqua Richards. Four-parted 

 Gentian. Fig. 3351. 



Gentiana propinqua Richards. Frank. Journ. 734. 1823. 



Stems slender, usually branched from the base and 

 ometimes also above, slightly wing-angled, 2'-/ high. 

 Basal leaves spatulate, obtuse, the upper distant, oblong 

 or lanceolate, J'-li' long, acute or obtusish at the apex, 

 rounded at the slightly clasping base, obscurely 3-nerved ; 

 flowers few or several, solitary on slender peduncles, 

 mostly 4-parted, 8"-io" high ; calyx 4-cleft, 2 of the 

 lobes oblong, the others linear-lanceolate ; corolla blue 

 or bluish, glandular within at the base, its lobes ovate- 

 Ianceolate, entire or denticulate; capsule linear, at length 

 a little longer than the corolla. 



Labrador to Alaska and British Columbia. Summer. 



6. Gentiana quinquefolia L. Stiff Gentian. 

 Ague-weed. Fig. 3352. 



Gentiana quinquefolia L. Sp. F!. 230. 1753. 

 Gentiana quinqiteflora Lam. Encycl. 2: 643. 1786. 



Annual ; stem ridged, usually branched, 2'-2i 

 high, quadrangular. Basal leaves spatulate, obtuse, 

 those of the stem ovate, acute at the apex, clasping 

 and subcordate or rounded at the base, 3-7-nerved, 

 |'-2' long: flowers in clusters of 1-7 at the ends 

 of the branches, or also axillary; pedicels slender, 

 2"-"" long; calyx one-fourth to one-third the length 

 of the corolla, its lobes narrow, or sometimes folia- 

 ceous, acute; corolla tubular-funnelform, s"-io" 

 lung, blue or yellowish, glandular within at the base, 

 its lobes triangular, very acute, entire; capsule stipi- 

 tate; seeds globose, wingless. 



In dry or moist scil, Maine and Ontario to Michigan, 

 south to Florida and Missouri. Ascends to 6300 ft. in North Carolina. Consists of several or 

 many races, differing in size of plant, size of corolla; the calyx-lcbes narrow or broad. Five- 

 flowered gentian. Gall-of-the-Earth. Gall-weed. Aug.-Oct. 



5. DASYSTEPHANA [Reneal.] Adans. Fam. PI. 2 : 502. 1763. 



Mostly perennial herbs with opposite entire leaves, and large sessile or short-stalked 

 flowers in terminal and axillary clusters, or sometimes solitary, usually 2-bracted under the 

 calyx. Calyx mostly 5-lobed, with an interior membrane. Corolla mostly 5-lobed, clavate 

 to funnelform, with thin lobed or toothed plaits in the sinuses, but without glands. Stamens 

 as many as the corolla-lobes, the anthers cohering in a ring or separate. Ovary i-celled; 

 ovules very numerous; style short; capsule stipitate. [Greek, rough garland.] 



About 75 species, natives of the north temperate zone. Besides the following, several others 

 occur in western North America. Type species : Gentiana asclepiadea L. 

 Margins of leaves and calyx-lobes scabrous or ciliate ; seeds winged. 

 Anthers separate, or merely connivent. 



Stems usually clustered ; calyx-lobes unequal : corolla narrowly funnelform. 1. D. affinis. 

 Stems mostly solitary ; calyx-lobes equal ; corolla campanulate-funnelform. 2. D. puberula. 

 Anthers cohering in a ring or short tube. 



Corolla-lobes distinct, longer than or equalling the plaits. 



Flowers 1-4 ; corolla campanulate-funnelform, its lobes 2-3 times as long as the plaits. 



3. D. parvifolia. 

 Flowers several or numerous ; corolla club-shaped, its lobes not much longer than the 



4. D. Saponaria. 



5. D.Andrezi'sii. 



plaits. 

 Corolla-lobes none or minute, the plaits very broad. 

 Margins of leaves and calyx-lobes smooth or nearly so. 



Flowers clustered, sessile, 2-bracteolate under the calyx. 



Corolla-lobes ovate, twice as long as the plaits ; leaves broad, acuminate 



Corolla-lobes rounded, little longer than the plaits ; leaves narrov 



seeds winged. 



6. D. flavida. 

 seeds winged. 



7. D. linearis. 

 Corolla-lobes ovate, acute, much longer than the broad plaits : leaves broad ; seeds winged. 



8. D. Grayi. 

 Corolla-lobes triangular-lanceolate : leaves obovate ; seeds wingless. 9. D. rillosa. 



Flowers solitary, peduncled, not bracteolate ; leaves linear. 10. D. Porphyrio. 



