SWERTIA GENTIANACE^E 447 



FRASERA 



1. Oregana Engelm. in herb. Sterns erect and rather stout, 1-2 feet 

 high: sometimes more slender and ascending : leaves ovate, to ovate-ob- 

 long or lanceolate 1-2 inches long : flowers few at the summit or sometimes 

 several and racemose-scattered: bracts oblong or ovate: calyx lobes from 

 oblong to ovate-lanceolate as long as the tube: corolla broadly funnelform 

 over an inch long, its short lobes roundish. Brit. Columbia to California 

 and Idaho. 



G. attiiiis Griseb. Gent. 191. Stems clustered, 8-12 inches long, mostly 

 ascending : leaves from oblong to lanceolate or linear : flowers from few to 

 numerous and thyrsoid-racemose : bracts lanceolate or linear: lobes of the 

 caiyx linear or subulate, unequal and variable, the longest rarely equalling 

 the tube, the shorter sometimes minute : corolla an inch or less long, rather 

 narrowly funnelform, its lobes ovate, acutish or mucronulate-pointed, 

 spreading. Brit. Columbia to California and the Rocky Mountains. 



G. aiiisosepala Greene Pitt, iii, 309. ' Annual, erect, slender, simple, 

 5-10 inches high, with a few small flowers terminal and in the upper axils : 

 leaves in a few pairs, the lowest obovate, the middle pairs oval, the upper- 

 most cordate-oval, all obtuse, sessile, % to more than % inch long: the few 

 flowers about 4 lines long; calyx parted almost to the base into 5 narrowly 

 elliptical very acute segments of unequal length, the shortest hardly equal- 

 ling the tube of the corolla, the longest almost equalling the full length of 

 the corolla; corolla broadly funnelform, the segments shorter than the 

 tube, rather obtuse, almost equalled by the longer setae of the crown. Nez 

 Perces Co. Idaho, Heller, July 1896 (n. 3440). " 



* -*- Calyx 45-p ar ttd. Corolla with one or two nectariferous 

 pits, or spots or an adnate scale to each lobe. Seeds comparatively 

 large. 



4 SWERTIA L. Gen. n. 321. 



Simple-stemmed perennial herbs with mostly opposite petioled 

 leaves, and blue or white flowers in. summer. Corolla rotate, 5- 

 parted ; the lobes dextrorsely convolute in the bud. Style none 

 or very short: stigma 2-lamellate or 2-lobed. Capsule ovate: the 

 placentae not intruded. 



S. obtusa Ledeb. Mem. Acad. St. Petersb. v, 526. S. perennis Pall, 

 not of L. " A span to a foot or more high : lowest leaves oblong or obovate- 

 spatulate (2 to 4 inches long ), tapering into a long petiole; upper cauline 

 few and narrower, sessile ; some commonly alternate : inflorescence racem- 

 iforni or narrowly paniculate, few-many-flowered : flowers 5-merous : sepals 

 narrowly lanceolate : lobes of the corolla ( 4-6 lines long) oblong-ovate 

 becoming lanceolate, the base bearing a pair of nectariferous pits which 

 are crested with a fringe. Subalpine in the Blue Mountains of Oregon to 

 the Rocky Mountains, Alaska and Siberia. 



5 FRASERA Walt. FI. Carol. 87. 



Smooth herbs with erect stems, opposite or verticillate leaves 

 and numerous flowers in thyrsoid or paniculate cymes. Corolla 

 rotate, 4-parted, the lobes dextrorsely convolute in the hud, bear- 

 ing a single or double fringed gland, and sometimes a fimbriate 

 crown at base. Stamens inserted on the very base of the corolla: 

 filaments subulate, often united at base, occasionally with some 

 interposed small bristles or scales. Ovary ovate, tapering into 

 a distinct and often slender persistent style : stigma small, 2-lobed 



