710 Lxxxv. GENTiANE^. [Chirouia 



broad, rounded at the apex, inconspicuously 3-nerved and narrowed 

 at the sessile base ; stem-leaves variable in shape and size, more 

 or less oblong or lanceolate and shorter than the internodes, an 

 inch long or less, semi-amplexicaul, suberect, rather fleshy and 

 rigid, decurrent at the base on both sides down to the next node, 

 rather obtuse or abruptly acuminate at the apex, the acumen 

 cartilaginous, small ; flowers |- to | in. long just before expansion, 

 on equal rather slender pedicels, arranged in rather lax terminal 

 ovoid panicles ; calyx deeply 5-lobed, openly campanulate ; the 

 segments lanceolate, acuminate, J in. long, quinouncial, somewhat 

 keeled, minutely glandular-puberulous on the back, green with 

 broad scarious margins ; corolla about f in. long, deeply 5-lobed, 

 of a deep rosy colour ; the tube very short, campanulate ; the 

 lobes oval, rounded, about i in. long, quinouncial, spreading, veiny ; 

 stamens 5, glabi-ous, declinate, exserted; filaments lanceolate- 

 linear, compressed, J^y in- ^^ng, inserted a little below the corolla- 

 sinuses ; anthers yellow, -j^- in. long, oblong, spirally twisted or 

 somewhat so even in the bud, 2-celled ; cordate and attached to 

 the filament at the base, eglandular ; the cells very broad ; style 

 glabrous, longer than and diverging from the stamens ; stigma 

 thickened, rather curved ; ovary compressed, oval, i in. long, ^ in. 

 broad, 2-celled. 



HuiLLA. — By nearly dried up swamps near Lopollo, at an elevation 

 of 5000 ft., rare ; fl. 23 Dec. 1859. No. 1525. 



4. FAROA Welw. ; Benth. & Hook. f. Gen. PI. ii. p. 806. 



1. F. salutaris Welw. in Trans. Linn. Soc. xxvii. p. 46, t. 17 

 (1869) ; Ficalho, PL Uteis, p. 225 (1884). 



HoiLLA. — A very elegant herb, annual or biennial, 2 to 5 in. high, 

 decussately branched from the base ; root and stems, etc., abounding 

 in a very better principle and furnishing by far the best tonic medi- 

 cine used by the negroes for dysentery and with still better effects 

 in intermittent fevers ; radical leaves rosulate, narrowly lanceolate- 

 linear, 1 to 2J in. long ; stem-leaves similar or also linear, sessile, semi- 

 amplexicaul, rather erect, deep green, rather fleshy, opposite or the 

 uppermost ones at the base of the heads of flowers quaternate and 

 resembling a tetraphylleus involucre ; flowers at the apex of the stem 

 and branches umbellate-capitate, clear-blue violet-coloured or milk- 

 white ; calyx quadrangular, 4-cleft ; the lobes erect, broadly mem- 

 branous at the base, gradually narrowed and obtuse at the apex, 

 obtusely keeled on the back, equalling the corolla- tube, mostly 

 obscurely purple ; corolla funnel-shaped, hypogynous ; the tube 

 gradually widened upwards ; the limb-lobes 4, erect-spreading in 

 flower, marcescent ; stamens 4, inserted on the corolla-tube between 

 the lobes, exserted ; filaments flattened-filif orm, equal, each furnished 

 below the base with a semi-lunar gland on the corolla-tube ; anthers 

 obscurely flesh-coloured or purple, eglandular, longitudinally dehiscing, 

 not twisted, introrse ; style straight, filiform, purple, gradually ter- 

 minating in the very narrowly truncate and delicately papillose sub- 

 bilobed or simple stigma. In damp sandy pastures throughout the 

 plateau of Huilla, between Nene and Humpata, from 4200 to 6500 ft. 

 alt., very plentjiful, in company with TrifoUum polystiichyum, var. 

 psoraleoides (Welw. herb. no. 1902), T. suhrotundum, var. obcordatn,m 



