GENTIANACEiE. (GENTIAN FAMILY.) 24:'> 



• ♦ Style short and persistent, or none; anthers reiiiainiuo' straight 

 •^ Corolla wiihout uectariferous ints or lan,'e ^jlands 

 •2. Gentiana. Calyx coinnionly witli a luembranoiis tube. Corolla fiiiihelform, rair^paDU- 

 late, or salverforin ; tlie sinuses with or without plaits oi appiMula-fH. »Uiuciu ou 

 the tube of tlie corolla. Style very short or none. Seeds very uumeruuH, u.tl rurt-Iy 

 covering the inner wall of the ovary. 



3. Pleurogyne. Calyx deeply 4 to 5-parted. Corolla rotate. 4 to ^parted ; the divisions 



acute, a pair of scale-like apjieiidages on their base. Stanu-ns on th« bams of the 

 corolla. Style none : stigmas decurrent down the sutures. Seeds extremely nuiiicr- 

 ous, near the two sutures. 



t- -t- Corolla witii one or two nectariferous pits, spots (glands), or an adnate scale to each 

 lobe : calyx 4 to 5-parted. 



4. Swertia. Corolla rotate, 5- (rarely 4-) parted. Style none or very short. Capsule 



ovate. Leaves sometimes alternate. 



5. Frasera. Corolla rotate, 4-parted ; tlie lobes bearing a single or double fringed gland, 



and sometimes a fimbriate crown at base. Stamens on the very b.ise of tlie corolla; 

 filaments often monadelphous at base. Capsule coriaceous, commonly flattened. 

 Leaves verticillate or opiiosite. 



1. ERYTHRiEA, Kenealm. Centaury. 



Low herbs : tlie flowers usually small and with l)rua(l stigmas. 



1. E. Douglasii, Gray. Slender, a span to a foot high, loosely and 

 paniculately branched, usually sparsely flowered : leaves from oblong to linear, 

 mostly acute : flowers all on strict and slender j)eduncles or jjcdicels : lobes of 

 the pink corolla oblong, obtuse, at most 2 lines long, nearly half tlie length 

 of the tube. — Bot. Calif, i. 480. Wyoming to Utah and westward to Cali- 

 foruia and Oregon. 



?,. GENTIANA, Tourn. Gentian. 



Herbs, with conspicuous flowers of various colors, in summer or autumn. 

 Herbage aud roots very bitter. 



§ 1. Corolla destitute of extended plaits or lobes or teeth at the snuises. — Gen- 



TI.\NELLA. 



* Flowers large or middle-sized, solitary, mostlij 4-meroits : corolla companulate- 

 funnelform, its lobes usualli/ fimbriate or erose, not croirned : a row of (jlands 

 between tlie bases of the jilaments. (Fringed Gentian.s.) 



■i- Flower on a naked and usuallij long peduncle terminating the stem or branches, 

 not bracteate at base : jilaments naked : calijx with acutely carinatc loins, the 

 tube sharpli/ angled by the decurrent keels. 



1. G. crinita, Frccl. A foot or two high, often pauiculate-corynihose, 

 leafy : leaves lanceolate or ovate-lanceolate from a rounded or subcordate partly 

 clasping base: corolla 2 inches long, sky-blue, rarely white; its lobes cum at e- 

 obovate, strongly fmbriate around the summit, less so down the narroicing sidrs: 

 capsule conspicuously stipitate. — Head-waters of the Missouri to Canada, 

 tlience southward to Georgia. 



2. G. serrata, Gunner. Stem 3 to 18 inches high : hares linear or lance- 

 olate-linear: corolla 1 to 1^ inches long, sky-blue or rarely white; its lobes 

 oblong or spatulate-obovate, eroscly fmbriate or toothed around the sutnwit and 

 sides, or sometimes either part nearly bare: capsule short-stipitatc. — 6'. dttunsa, 



