284 
51. GENTIANACEjE. 
1. ViNCA. Cor. salveishaped ; tube long, with 5 angles at 
the mouth, closed by spreading hairs and the connivent 
stamens ; limb flat, 5-lobed. 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 calyx-segments 
glabrous. — E. B. 917. — St. rooting. Flowering branches erect. 
Fl. smaller than those of the next, blue, rarely white. — Woods 
and thickets. P. V. VI. Lesser Periwinkle. E. I, 
[2. r. major (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 Periwinkle.] E. I. 
Order LI. GENTIAN ACE.«.J 
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. GENTIAXE.E. Corolla twisted in the bud. 
L. opposite. 
* Sti/le deciduous. 
Tribe I. BLACKSTONIE^E. Corolla rotate. 
1. Blackstonia. Cal. 8-parted. Cor. nearly rotate, 
8-parted. Stam. 8. Style 1. Stigma 2 — 4-cle'ft. Caps. 
1 -celled placentas on the inflexed margin of the valves. 
Tr. II. ERYTHR^E/E. Corolla funnel- or salver-shaped. 
2. Ekythr^a. Cal. 4— 5-iid. Cor. funnel-shaped, limb 
short, 4— 5-fid. Stam. 4—5. Anth. erect, at length spirally 
twisted. Style simple ; stigmas 2. Caps, imperfectly 2- 
cclled from the indexed margins of the valves. 
