GENTlANACEyt 



course, plants with sessile leaves, large dark blue flowers 

 in the shape of an elongated cup ; but there are distinct 

 varieties according to situation and soil, some being 

 peculiar to limestone, some to granite, some to high 

 alpine pastures, some to those of the Jura. These four 

 species are known as (a) G. Clusii (PI. LXXVJJ1). Dwarf, 

 compact, caespitose ; leaves coriaceous, thick, entire, 

 lanceolate-acute, dark green, with central vein; scape 

 2 3 /4~3 * 4 in. at most; flower large, erect, charming 

 violet-blue, corolla with 5 short lobes ; calyx-teeth 

 acute, appressed to the corolla and separated from one 

 another by acute angles. From thin, rocky pastures of 

 the limestone Alps and Jura; 1200-2000 m. (b) G. 

 J^ochiana (PI. LXXV1I1). Leaves large, smooth, spread- 

 ing, many-veined, yellowish-green ; flowers blue tinged 

 violet, with five blackish-green splashes on the throat; 

 calyx-teeth spreading, oblong, more or less constricted 

 at the base and separated by truncated angles. July- 

 August. Granitic Alps; 1400-2000 m. Some peaks in 

 northern Jura. (c) G. alpina differs from the last in 

 a running rootstock; smaller leaves of an almost bluish 

 green, in ball-shaped rosettes ; smaller flowers of intense 

 blue, never on other than very short stems, and often 

 sessile. Summer-flowering. Poor pastures in the High 

 Alps; 2200-3ooo m. Lastly (d), in the Alps of 

 Dauphiny and of Savoy is found the most beautiful of 

 all, G. angustifolia, which under the name of Gentianella 

 has for three hundred years been grown in English 

 gardens. The stem is stoloniferous ; leaves linear, of 

 beautiful, shining green; flowers large, a glorious blue 

 on stem of 4-10 in. Easily grown in a somewhat firm soil 

 and partial sun. In England and in some parts of Germany 

 it is used to make unbroken edgings of ideal beauty. 

 The confusion, which has hitherto engulfed these 

 differences under the name acaulis, justifies one in inflict- 



