444 GENTIANACEAE gentiana 



ous flowers that usually open only in sunshine. Calyx commonly 

 with a membranous or spathaceous tube. Corolla funnelform or 

 campanulate to salverform or rotate, without pits, large glands 

 or scales ; the sinuses with or without pleats or appendages. Sta- 

 mens as many as lobes of the corolla and inserted on its tube, 

 included: anthers connate into a tube or separate, remaining 

 straight after opening. Style very short or none : stigma of two 

 spreading or rarely united lamellae, persistent. Seeds very 

 numerous, often covering the whole inner walls of the thin 

 2-valved capsule. 



§ 1 Gentianella Gray Syn. Fl. ii, 116. Corolla without ex- 

 tended pleats or lobes or teeth at the sinuses. Anthers usually 

 versatile. Stigmas distinct or only casually united. 



* Flowers large or middle sized, solitary on a naked peduncle ter- 

 minating the stem or branches, not bracteate at base, mostly 4-mer- 

 oiis : corolla campanulate-funnelform, its lobes usually fimbriate or 

 erose, not crowned : a row of glands alternating with the base of the 

 filaments. 



G. serrata var. holopetala Gray Bot. Cal. i, 481. Slender, 2-16 

 inches high, with comparatively long peduncles : leaves linear or lanceo- 

 late-linear : calyx-lobes ovate-acuminate, acutely carinate, the 2 exterior 

 longer and narrower than the others : corolla an inch or more long, its 

 oblong lobes entire or merely erose-denticulate around the summit : cap- 

 sule short-stipitate : seeds squamulose-roughened. In the high Sierra Ne- 

 vada Mountains and northward to Oregon. 



G. simplex Gray Pacif. R. Rep. v, 87, t. 16. Stem 2-10 inches high, 

 simple, bearing 2-4 pairs of lanceolate or linear-oblong leaves 3-9 lines 

 long, and a single blue flower on a slender peduncle : calyx-tube and lobes 

 hardly at all angled or carinate ; the lobes nearly equal and similar : corolla 

 an inch long, its oblong spatulate lobes entire or erose-dentate, and some- 

 times a fringe of a few bristly teeth low down on the sides : capsule raised 

 on a short stipe : seeds smooth but longitudinally striate, narrow, wingless 

 when mature except a cellular appendage at both ends. Higher parts of 

 the Cascade and Sierra Nevada mountains. 



* * Flowers small, 4-5-merous : corolla somewhat funnelform or 

 salverform when expanded, the lobes entire. 



G. tenella Rottb. Act. Hafn. x, 436, t. 2, fig. 6. "An inch to a span 

 high: leaves (2 to 6 lines long) oblong or the lowest spatulate: calyx 

 deeply 5- (sometimes 4-) parted; the lobes foliaceous, oblong to ovate, 

 usually unequal : corolla 2% to 4 lines long, double the length of the calyx 

 (more lengthened in fruit), blue; its lobes ovate-oblong, rather obtuse, 

 little shorter than the tube: fimbriate crown conspicuous at the throat." 

 High mountain summits, Idaho to the Rocky Mountains. 



G. acuta Michx. Fl. i, 177. G. Amarella var. acuta Herder. Stem 

 leafy, slightly wing-angled, simple or branched, 6-20 inches high : lower 

 leaves obovate to spatulate, obtuse, the upper lanceolate, acute or acumin- 

 ate at the apex, rounded or subcordate at base, sessile or somewhat clasp- 

 ing, 6-24 lines long: flowers numerous, racemose-spicate, 5-8 lines high: 

 pedicels 2-6 lines long, leafy rbracted at base: calyx usually almost 5- 

 parted, its lobes lanceolate or linear, equal or one or two of them longer: 

 corolla longer than the calyx, usually blue, its lobes oblong, acute or be- 

 coming obtuse: crown in the throat of few setae: capsule sessile. In the 

 high mountains, California to Alaska and across the Continent. 



