570 LXXXVIJ, GENTIANEZ (BAKER AND BROWN). | Voyria. 
Lower Guinea. Gaboon: Munda; Sibange Farm, in woods, very scarce,. 
Soyaux, 166! 
2. V. platypetala, Baker in Kew Bulletin, 1894, 26. Stem flexuous, 
1-flowered, 2~3 in. long, bearing about 3 pairs of adpressed 1udimentary 
leaves. Calyx } in. long; lobes as long as the tube, linear-lanceolate, 
tapering toa 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.. 
Upper Guinea. Niger Delta: by the River Nun, Mann, 514! 
12. SWERTIA, Linn.; Benth. et Hook. f. Gen. Pl. ii. 816. 
(Sweertia, Gilg). 
Calyx-tube 0 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 0 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 very shortly petiolate, radical narrowed into a petiole. 
Cymes terminal, corymbose 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-lanceolate, 2-4 lin. 
broad. 
Corolla-lobes } in. long, acute : 
Corolla-lobes about 4 in. long, very obtuse 
Stem-leaves cordate-ovate to ovate-lanceolate, 4-12 
. S. Johnsoni, 
. S. erosula, 
. 
Nore 
lin, broad. 
Stem-leaves mostly 13-2} in. long; capsule 10-11 
lin. long : ‘ : : : . 8. 8. kilimandscharica. 
Stem-leaves mostly 2-1 in. long; capsule 5-6 lin. 
long . . : 5 : ! . 4 S. Schimper. 
Corolla-lobes with 2 fringed nectaries near the base, 
sometimes wanting in S. Volkensii, Gilg. 
*Flowers 5-merous. 
tPerennials (See also 19, S. subalpina). 
Sepals reflexed, leaf-like, subpetiolate : . 5. 8. calycina. 
Sepals erect or ascending, not leaf-like. 
Plant 12-16 in. high; inflorescence a flat- 
topped corymb 6-8 in. broad . : . 6. S. fwambensis- 
Plant less than 10 in. high; inflorescence 3-3 
in. broad. 
Flowers solitary on each stem ; plant about 
1 in. high. : é : : . 10. S. Richardt. 
Flowers in 3 to several-flowered cymes. 
Stems 1-3, filiform ; plant abovt Lin. high 11. S. minima. 
Stems not filiform, }—1$ lin. thick. 
