2(i0 



TRANSACTIONS OF THE 



[Sess. 



SO free a grower as the others. Its flower is dark blue, 

 likest that of G. sino-ornata but darker in colour. 



The following key may aid growers in distinguishing 

 these Gentians in the garden : — 



A. Diffuse plant. Stolons slender loosely and widely 

 spreading np to 18 cm. long. Stolon- 

 leaves epetiolate narrow linear or linear- 

 lanceolate tapered to a long acute point, 

 not contracted at base. 



a. Flowers distinctly stalked, light blue with satiny 



sheen, throat white or jjale blue and 

 white. 

 1. Stolon upper leaves dark green strongly re- 

 curved over 2 cm. long about 2 mm. wide 

 at base. Pedicel above last leaf-pair about 



1 cm. long dark red. Calyx-tube about 



2 cm. long, lobes twice as long linear re- 

 curved not contracted at base. Corolla 

 throat white, lobes somewhat apiculate 

 bright satiny methyl-blue strongly recurv- 

 ing. Spread of corolla over 3 cm. . Farreri 



■2. Stolon upper leaves pale green erect hardly 

 recurved over 2 cm. long about 1 mm. 

 wdde at base. Pedicel above last leaf-pair 

 over 1 cm. long red. Calyx -tube about 



1 cm. long or a little more, lobes twice 

 as long filiform erect not recurved not 

 contracted at base. Corolla throat lined 

 pale blue and white, lobes obtuse pale blue 

 hardly recurving. Sj^read of corolla about 



2 cm. ..... Lawrencsi 



b. Flowers sessile or nearly so, throat dark pure blue. 



3. Stolon iipper leaves pale green strict spread- 



ing not recurved over 2 cm. long and 

 5 mm. wide at base. Pedicel above last 

 leaf- pair nearly absent at most 5 mm. long. 

 Calyx-tube about 1 cm. long, or a little 

 more, lobes not twice as long linear flat 

 somewhat spreading not recurved not con- 

 tracted at base. Corolla-lol>es apiculate 

 royal-blue I'er.urving. Spread of corolla 

 about 3 cm. .... sino-ornata 



15. Compact plant. Stolons stout short close. Stolon- 

 leaves shortly petiolate linear-oblong or 

 oblong obtuse or somewhat acute, con- 

 tracted at base. 



c. Flowers sessile or nearly so, throat dark jjurple- 



blue. 



4. Stolon upper leaves dark green horizontal 



about 2 cm. long and 6 mm. wide. Pedicel 

 hardly visible above last leaf-]iair. Calyx- 

 tube aVjout 1 '•> cm. long more or less, lobes 

 shorter than or at most equal to tube erect 

 not recurved contracted at l)ase. Corolla- 

 lobes apiculate deep purple-blue . . Veitchiorum 



