GENTIANACE# 61 
Order LV.—GENTIANACE. 
Flowers regular, solitary or in cymes; calyx 4-5- 
toothed ; corolla 4—5-lobed; stamens 4-8; ovary usually 
2-celled ; seed-vessel usually a 1-2-celled capsule; leaves 
generally opposite and entire. A large order, belonging 
chiefly to the cold and temperate parts of the globe. 
i (CHLGRA, 1. 
Flowers yellow, in dichotomous cymes; calyx-teeth, 
corolla-lobes, and stamens 6-8 each; ovary 1I-celled; 
style bifid; seed-vessel a 2-valved capsule. Not alpine. 
C. perfoliata, L., Yellow Centaury; stem-leaves com- 
pletely connate at the base; open hill-sides, frequent. 
C. serottna, Koch; a smaller plant with paler flowers, 
calyx-teeth longer, stem-leaves only partially connate; 
very rare; Canton de Vaud, Valais, Ziirich. 
2. ERYTHRAA, Pers. 
Flowers small, usually pink, in trichotomous cymes ; 
corolla funnel-shaped; calyx-teeth, corolla-lobes, and 
stamens 4-5 each; anthers twisted spirally; ovary par- 
tially 2-celled. Not alpine. 
E. Centaurium, Pers., Centaury, with numerous varie- 
ties; stem-leaves partially connate; banks, common. 
3. SWERTIA, L. 
Flowers in racemes; calyx 5-toothed; corolla rotate, 
5-lobed, with two nectariferous glands; capsule r-celled. 
