234 51. GESTlANACEiE. 



Tr. n. ERYTHR^EM. Corolla funnel-sliaped. 



2. Bbythb^a. Oal. S-fid. Cor. -limb short, 5-fid. Stam. 

 5. Anth. erect, at length spirally twisted. Style simple ; 

 stigmas 2. Caps, imperfectly 2-celled from the inflexed 

 margins of the valves. 



3. OiCENBiA. Cal. 4-partite or lohed. Cor. -limb short, 4- 

 fid. Stam. 4. Anth. erect, not twisted. Stigma capitate, 

 undivided. Caps. 1- or imperfectly 2-celled. 



** Stt/le persistent or stigma sessile. 

 Tr. m. SWERTIEjE. Style often wanting, stigma persistent. 



4. Gbntiana. Cal. 4— 5-oleft. Cor. funnel- or salver-shaped, 

 limb 4 — 5-cleft. Stam. 4 — 5, straight. Stigmas 2. Caps. 

 1-oelled, seeds on the inflexed margins of the valves. 



Subord. II. MENYANTHE^. Corolla induplicate in the 

 bud. L. alternate or opposite to the fl.-stems. 



5. LiMNANTHBMtTM. Cal. 0-parted. Cor. rotate, thin ; limb 

 5-parted, smooth on the disk, hairy or scaly at the base 

 within. Stam. 5. Stigma with 2 toothed lobes. Caps. 

 1-oelled, not bursting. — X. simple. 



6. Mbnyanthbs. Cal. 6-parted. Cor. funnelshaped, fleshy ; 

 Umb 6-parted hairy within. Stam. 5. Stigma capitate, 

 notched. Caps. 1-celled, 2-valved; valves bearing the 

 seeds along their middle. — L. temaie. 



Suborder I. Gentianem. Tribe I. Chlorex. 



1. Chlo'ea Linn. Yellow wort. 



1. C. perfolidta (L.) ; lowermost 1. elliptic-oblong narrowed 

 below, stem-1. broadly connate, st. perfoliate. — E. B. 60. R. 

 xvii. 1060. — St. 12 — 18 in. high, simple. Stem-1. triangular- 

 ovate, connected by their whole breadth in rather distant pairs, 

 glaucous. Panicle forked, many-flowered. Cal. divided to 

 its base into linear-subulate segments. Cor. bright yellow. 

 Stigmas yellow. — Damp chalky places. A. VII. — IX. E. I. 



Tribe II. Erythrceeee. 



2. 'Esytk&m'a Benealm. Centaury. 



1. E. puhhel'la (Fries) ; st. much branched acutely qua- 

 drangular, 1. ovate the uppermost oblong-lanceolate, Jl. all 



