566 



LXXXVII. OENTIAXE^ (bAKER AND BROWN). 



\Faroou^ 



Flowering-leaves dilated at the base, more or less 

 forming an involucre. 

 Calyx-lobes mucronate, tips spreading or squarrose. 1. F. inrolucrata. 

 Calyx-lobes not mucronate. tips erect. 



Flowering-leaves lanceolate or narrowly oblong ; 



calyx-lobes not gibbous-keeled at the apex . 2. F. axillaris. 

 Flowering-leaves linear; calyx-lobes gibbous- 

 keeled at the apex . . . . . ^. F. graveolens.. 



Flowering-leaves not dilated (usually narrowed) at the 

 base. 

 Stamens shorter than or about equalling the corolla- 

 lobes; small plants 1-2 in. high. 

 Calyx-lobes 1 lin. long, with erect tips . . 5. jP. amara. 



Calyx-lobes § lin. long, with spreading tips. . 6. F. pusilla. 

 Stamens much longer than the corolla-lobes. 



Plant 4-8 in, liigh ; flower-clusters 3-6 to a 

 stem, crowded into a terminal oblong in- 

 florescence . . , . . . 4i. F. affinia. 

 Plant 1^-4 in. high; flower-clusters 1-2 to a 

 stem, the lower contiguous or distant. 

 Calyx-lobes obovate, obtuse, 'cuspklate-apicu- 



late . . . . . . . 7. 2^. nyasica. 



Calyx-lobes ovate, acute, not cuspidate-apicu- 

 late 

 Corolla scarcely 2 lin. long; style hair-like. 8. F. Boehmii. 

 Corolla 2j lin. long ; style filiform . . 9. i^ salutaris. 



1. P. involucrata, Knobl. in Bot. Centralbl. Ix. (1894) 8^1. A 

 (hvarf annual o-4 in. high, much branched, glabrous. Stems narrowly 

 4-winged ; wings with jagged or scabrous edges. Leaves 10-18 lin. long ; 

 lower 5 lin. broad, oblong-spathulate, obtusely attenuate at the apex, 

 long-attenuate at the base, connate ; flowering leaves with scarious 

 veiny broadly cordate overlapping bases 4-5 lin. broad, forming an invo- 

 lucre to the flowers, then narrowed to a lanceolate or linear-lanceolate 

 acute blade about 2 lin. broad, widely spreading. Flower-clusters 

 axillary and terminal, all distant, 4-5 lin. in diam., dense, many-flowered;, 

 pedicels ^ lin. long. Calyx-lobes about 1 lin. long, |-1 lin, broad, oblong- 

 obovate or spathulate-obovate, obtuse, mucronate, with recurved -spread- 

 ing or squarrose tips, keeled down the back, with numerous rather 

 crowded subparallel veins. Corolla-tube IJ lin. long; lobes nearly 1 lin. 

 long, |-J lin. broad, elliptic, acute. Stamens about as long as the corolla- 

 lobes. Style 1 hn. lon^ ; stigma minutely 2-lobed. Capsule IJ lin. long, 

 oblong, obtuse, scarcely narrowed at the base. — Sehcea inrolucrata, 

 Klotzsch in Peters, Reise Mossamb. Bot. 271; Welw. in Trans. Linn. 

 Soc. xxvii. 47. 



IMCozamb. Dlst. Portuguese East Africa : Lower Zambesi, Boror, Peters ! 



2. F, axillaris. Baker in Keio Bulletin, ] 898, 158. Plant 6-7 in. 

 high, branched, glabrous. Stems narrowly 4-winged. Leaves 1-1 J in. 

 long, \-^ in. broad ; lower oblong-spathulate or elliptic-lanceolate, 

 narrowed to the base ; upper oblong or lanceolate, acute or subobtuse, 



