50. APOCTNACE^. — 51. aENTIANACILa!. 239 



deciduous, twisted in the bud. Stam. 6, filaments distinct. 

 Anth. 2-celled, basifixed ; pollen granular. Ovaries 2, 1-celled ; 

 or 1 of 2 cells. Stigma 1. Fr. 2 follicles. Seed with iieshy 

 albumen. — Rudimentary stipules rarely seen. 



1. ViNCA. Oor. salvershaped ; tube long, with 6 angles at 

 the mouth, closed by spreading hairs and the connivent 

 stamens ; limb flat, 5-loDed. Stigma capitate with a ring 

 atits base. Fr. of 2 erect long slender follicles or raiely one, 

 2 glands alternating with them. 



1. Vnsr'cA Linn. Periwinkle. 



fl. V. minor (L.) ; st. procumbent, 1. lanceolate-elliptic, their 

 margins as well as those of the small lanceolate calyx-segments 

 glabrous. — JE. B. 917. — St. rooting. Flowering branches erect. 

 Fl. smaller than those of the next, blue, rarely white. — Woods 

 and thickets. P. V. VI. Lesser PeriwinTde. E. 



[2. V. mdjor (L.) ; St. somewhat ascending, 1. ovate acute or 

 subcordate, their margins as well as those of the long subulate 

 calyx- segments ciliate. — E, B. 514. — St. at first ascending, 

 afterwards prostrate and rooting. Flowering shoots erect. Fl. 

 large, purplish blue. — Hedges and thickets, introduced. P. 

 IV. V. Greater Periwinlde.'\ E. 



Order LI. GENTIANACE^. 



Cal. inferior, divided, persistent. Oor. regular, 4 — 8-fid, hypo- 

 gyiious, marcescent ; imbricate and twisted, rarely induplicate 

 in the bud. Stam. inserted on the cor., as many as the segments. 

 Anth. versatile. Ovary of 2 carpels with the edges slightly in- 

 flexed or meeting. Caps, many-seeded, generally two-valved. 

 — No stipules. 



Subord. I. GENTIANEJE. OoroUa twisted in the bud. 

 L. opposite. 



* Style deciduotis. 



Tribe I. CHLOREM. Corolla rotate. 



1. Chloea. Cal. 8-parted. Cor. nearly rotate, 8-parted. 

 Stam. 8. Style 1. Stigma 2— 4-cleft. Caps. 1-celled 

 placentas on the inflexed margin of the valves. 



Tr. n. ERTTHR^EyE. Corolla funnel- or salver-shaped. 



2. Eeythb^a. Cal. 4 — 5-fld. Oor. funnel-shaped, limb 



