572 Lxxxvii. GENTiANE^ (baker AND brown). [Swertia. 



Leaves flat, distinctly or abruptly narrowed at 

 the base into a very short petiole ; plants 

 9-18 in. high. 

 Leaves oblong or ovate-oblong, about 2i 



times as long as broad . . . 24. S. Whytei. 



Leaves lanceolate, 4-6 times as long as bro »d. 

 Corolla-lobes 3,^-5 lin. long, lf-2i lin. 



broad ...... 25. S. usamharensis. 



Corolla-lobes 2-2^ lin. longjl-l^lin. broad 26. S. Umini. 

 Leaves longitudinally folded, 2-6 lin. long 

 sessile, but distinctly rounded in at the 

 base, narrowly ovate-lanceolate or linear- 

 lanceolate. 

 Plant 2|-5 in. high ; corolla-l;bes 1^-2 lin. 



broad, elliptic to obovate-oblong . 27. S. curtioides. 



Plant 4-9 in. high ; corolla-lobes 1 lin. 



broad, narrowly oblong . . . 28. *S. Mannii. 



Leaves flat or longitudinally folded, ^-2 in. 

 long, sessile, linear, scarcely or not at all 

 narrowed at the base. 

 Inflorescence corymbose or corymbose-panicu- 

 late, branches not parallel with the stem. 

 Plant ^-1 ft. high ; corolla-lobes not 



complicate-acute at the apex . . 29. S. stellarioides. 



Plant ] 5-2 ft. high ; corolla-lobes with 



complicate-acute spreading tips . 30. S. Sharpei. 

 Inflorescence long and . narrow, with 

 branches parallel to the stem or with 



axillary flowers along a simple stena . 31. S, pieurogynoides. 

 **Flowers 4-merous; plants 1^-3 in. high. (See 

 also 2Q, S. Eniini). 



Sepals very acute 32. <S'. tetrandra. 



Sepals obtuse or subobtuse .... 33. S. intermixta. 



1. S. Johnsoni, N. E. Br. Plant probably perennial, perhaps 



attaining to 2 ft. in height. Leaves in several distant pairs, not 

 crowded at the base, |-1 in. long, 2-3 lin. broad, lanceolate or linear- 

 lanceolate, acute, sessile. Inflorescence a narrow panicle 3-7 in. long, 

 about 1 J in. broad with 3-4 distant pairs of many-flowered erect branches 

 1-2 in. long, including the clustered 5-merous flowers ; pedicels 3-6 lin. 

 long. Sepals 3J-5 lin. long, l-l^ lin. broad, lanceolate or ovate- 

 lanceolate, tapering to an acute point. Corolla-lobes J in. long, J in. 

 broad, elliptic-lanceolate, acute, with 1 large circular fringed nectary 

 near the base. Stamens \ in. long ; anthers apiculate. Ovary lanceolate 

 or ovate-lanceolate, acutsly tapering to the stigma, but scarcely with a 

 distinct style ; stigmatic lobes small, about \ lin. broad, ovate, subobtuse. 

 XtXozamb. 3>lst. Portuguese East Africa ? on mountains east of Lake Nyasa, 

 Johnson ! 



2. S. erosula^ JSf. E. Br. Plant 1-2 ft. high; stems rather 

 stout, branching only at the uppermost 2-3 nodes. Radical leaves not 

 seen; stem-leaves f-lj in. long, 2-4 lin. broad, suberect, linear-lanceo- 

 late, acute, sessile. Inflorescence a narrow 12-24-flowered panicle 

 about 4-8 in. long, 1-1 J in. broad, with 2-3 distant pairs of erect 



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