284 



THE FLORA. 



ORDER XCV. GENTIANACE^E. The Gentianworts. 



Herbs with opposite, entire, 

 smooth leaves, and showy 

 regular powers; 



corolla usually twisted in the 

 bud, with as many lobes as 



ttamens, and alternate with 

 them, mostly persistent 

 and withering; 



stigmas 1 or 2 ; 



ovary 1 -celled, superior, be- 

 coming a 2-valved 



pod with many seeds. 



Analysis of the Genera. 



Leaves opposite or whorlcd, 

 sometimes minute. Corolla 

 mostly twisted in bud.... 2 

 5 Leaves alternate or radical. 

 Corolla valvnte in the bud 

 ....d 



2 Corolla with a glandular spot 

 on each lobe, sometimes 



with spurs o 



2 Corolla without glandular 



spots or spurs. . . .3 

 3 Corolla tubular, the tube longer than the limb a 



3 Corolla deeply cleft, mostly wheel-shaped, tube very short b 



a Sepals 4 or 5. Corolla fringed, or with folds between lobes. Anthers straight. 



GENTIA'NA. 



a Sepals 4 or 5. Anthers spirally twisted. European Centaury. ERYTHK.S' 



a Sepals 2, leaf-like. Cor. 4-cleft, white or purplish. Pennywort. OUOLA'RI 

 b Leaves very small or mere bracts. Fls. 4-parted. Screw-stem. BAKTO'XI 

 b Leafy. Fls. 5-12-parted. Anthers curved. American Centaury. SABBA'TI 

 c Corolla 4-parted, with 4 spurs beneath at base. Spurred Gentian. HALE'NI 

 c Cor. 4-parted, without spurs. Tall, with whorled leaves. Columbo. FKA'SEKA. 

 d Corolla bearded inside. Leaves 3-foliate, on long stalks. 



Buck-bean. MENYAN'THES. 



4 Corolla smooth inside. Leaves simple, floating. 



Floating Heart. LIMNAN'THEMUIC 



Fig. 615. Gentians Anflre-.vsii. 6. The calyx and 

 capsule. 7. The corolla laid open, showing the fold? 

 (2-Iobed) between the proper petals, and the Matnene 

 attached at base. 8. Capsule cut across. 0. Seed 

 magnified, with its large, loose testa. 



