86 Gentianaceae 



Subfamily Oleoideae. Ovules pendulous from apex 

 of locuH. 



Tribe i. Fraxineae. Petals free or united only at 

 base, sometimes absent. Fncit winged. 



Only British genus (Fruit-wing distally produced) : 



Fraxinus. 

 *Tribe 2. Syringeae. Corolla sympetalous. Fruit 

 a loculicidal capsule with winged seeds. 



*Syringa. 



Tribe 3. Oleeae. Petals 4, free or united. Fruit 

 a berry or drupe, mostly i -seeded. 



Only British genus : Ligustrum. 



Suborder 2. GENTIAN INEAE. Stamens as many 

 as petals. Ovary superior, 1-2-loc with 00 ovules which 

 have one integument on parietal or Sl^Wq placentae. 



Fam. 2. Gentianaceae. Annual or perennial, 

 usually glabrous, bitter herbs, rarely shrubs. Leaves 

 opposite, entire, exstipulate. Flowers cymose, usually 

 4-5-merous, sympetalous, hermaphrodite, actinomorphic. 

 Sepals free or united. Corolla mostly twisted in bud. 

 Stamens as many as petals, inserted on the corolla. 

 Carpels (2) with usually 00 ovules. Ovary mostly i-loc 

 with parietal placentae. Fruit a 2-valved capsule. 



Subfamily i. Gentianoideae, Leaves opposite. 

 Corolla convolute or imbricate in bud. Pollen grains 

 not compressed. 



Tribe i. Chironieae. Style slender. Placentae pro- 

 jecting. 



Leaves connate. Corolla large, rotate. Stamens 

 6-8. Blackstonia (= Chlora auct.). 



