50. APOCnrACEJ!. 51. GEMIANACEiE. 233 



Order L. APOCYNACE^. 



Cal. in 4 or 5 persistent divisions. Cor. regular, 4 — 5-lol)ed, 

 deciduous, twisted in tlie bud. Stam. 5, filaments distinct. 

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

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

 albumen. — Rudimentary stipules rarely seen, 



1. VixcA. Cor. salvershaped ; tube long, with 5 angles at 

 the mouth, closed by spreading hairs and the connivent 

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

 at its base. Fr. of 2 erect long slender follicles or rarely one, 

 2 glands alternating with them. 



1. Vin'ca Linn. Periwinkle. 



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

 margins as well as those of the small lanceolate ealyx-aegments 



flabrous. — ^. S. 917. — St. rooting. Flowering branches erect. 

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

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



[*2. V. major (L.) ; st. somewhat ascending, 1. ovate acute or 

 subcordate their margins as well as those of the long subulate 

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

 afterwards prostrate and rooting. Flowering shoots erect. Fl. 

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

 IV. V. Greater PerivnnkhJ] E. 



Order LI. GENTIANACE^. 



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

 gynous, 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. GENTIAJSfE^. CoroUa twisted in the bud. 

 L. opposite. 



* Style deciduous. 



Tribe! CHLOREjE. Corolla rotate. 



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

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

 placentas on the inflexed margin of the valves. 



