570 



LXXXVII. GENTlANEiE (bAKER AND BROWN). 



[ Voyria^ 



^ower Guinea. Gaboon : Munda ; Sibange Farm, in woods, very sc;irce,. 

 Soyaux, 16G I 



2. V. plat3rpetala,^a^er in Kew Bulletin, 1 894, 26. Stem flexuous, 

 1-flowered, 2-3 in. long, bearing about 8 pairs of adpressed ludimentary 

 leaves. Calyx \ in. long ; lobes as long as the tube, linear-lanceolate^ 

 tapering to a setaceous point. Corolla-tube cylindric, swollen around the 

 anthers, 8-10 lin. long ; expanded limb 4-5 lin. in diam. ; lobes 5, shortly 

 spathulate-orbicular. Anthers inserted | of the way up the corolla-tube. 



XTpper Guinea. Niger Delta : by the River Nun, Mann, 514! 



12. SWERTIA, Linn. ; Benth. et Hook. f. Gen. PI. ii. 816. 

 {Sweertia, Grilg). 



Calyx-tube or very short ; segments 4-5, acute or obtuse. 

 Corolla subrotate ; tube very short, broad ; segments 4-5, acute or 

 obtuse, with one or a pair of glandular nectaries at the base. Stamens 

 inserted in the corolla-sinuses, shorter than the segments ; filaments 

 subulate or flattened ; anthers oblong or ovate, versatile. Ovary 

 1-celled; placentas slightly intruded ; ovules many ; style or short; 

 stigma 2-lobed. Capsule oblong or lanceolate, 2-valved. Seeds many, 

 minute, compressed, often winged. — Annual or perennial herbs. Stem- 

 leaves sessile or vei-y shortly petiolate, radical narrowed into a petiole. 

 Cymes terminal, c(^rymbose or panicled. Flowers blue, yellow, or white. 

 Species about 90, the others chiefly Asiatic, with a few in South Africa, Mada- 

 gascar and Europe. 



Corolla-lobes with 1 circular fringed nectary near the 

 base; plants probably all perennial. 

 Stem-leaves lanceolate or linear-lancecjlate, 2-4 lin. 

 broad. 

 Corolla-lobes h in. long, acute . . . . ] 



Corolla-lobes about ^ m. long, very obtuse 



Johnsoni. 

 erosula. 



Stem-leaves cordate-ovate to ovate-lanceolate, 4-12 

 lin. broad. 

 Stem-leaves mostly 1^-2| in. long; capsule 10-11 



lin. long . . . . . . . 3. 5. kilimandscJiarica^ 



Stem-leaves mostly |-1 in. long; capsule 5-6 lin. 



long . . . . . . . . 4. aS. Schimperi. 



Corolla-lobes with 2 fringed nectaries near the base, 

 sometimes wanting in iS. Volkensii, Gilg. 

 *Flowers 5-merou*. 



fPerennials (See also 19, S. subalpina). 



Sepals reflexed, leaf -like, subpetiolate . . ^. S. calycina. 



Sepals erect or ascending, not leaf-like. 



Plant 12-16 in. high; inflorescence a flat- 

 topped corymb 6-8 in. broad . . .6. S.fwamhensis, 

 Plant less than 10 in. high ; inflorescence |-3 

 in. broad. 

 Flowers solitary on each stem ; plant about 



1 in. high. . . . . . \0. S. Richnrdi, 



Flowers in 3 to several-flowtred cymes. 



Stems 1-3, filiform ; plant about 1 in. high 11. 5. minima. 

 Stems not filiform, i-1^ lin. thick. 



