Dr Graham's List of Bare Plants, 387 



slender, ^pike racemose, tonninal, much elongated, many-flowered 

 unilateral ; rachis furrowed, pubescent with dissimilar hairs, most of 

 them being very short, others longer. Bracts ovate, acute, reflected, 

 green, persisting. Whorls 4-flowered ; flowers arising in pairs from 

 one point, but having no common peduncle. Pedicels as long as the 

 bracts. Cali/x lO-nervcd, bilabiate, the upper lip 3-nerved, rounded, 

 reflexed, entire, mucronulate in the centre, decurrent along the sides 

 of the tube, between whicli narrow wings the tube is flat above ; lower 

 lip of four slender subulate teeth, of which the lateral ones are shorter 

 than the others and broader at the base ; nearly the whole of the ca- 

 lyx, as well as the pedicels, has similar pubescence to that on the 

 rachis, and is reddish-gi-een with a pink tinge on the upper lip, which 

 alone is glabrous. Corolla pale pink ; tube greatly exserted, covered 

 Avith dense uniform pubescence, equal to the longer hairs on the rachis, 

 compressed laterally ; dilated a little upwards, but contracted at the 

 throat ; limb bilabiate, the lower lip spoon-shaped, slightly undulate, 

 entire, projecting forwards in a line with the lower side of the tube ; 

 the upper 3-lobed, of which the central is notched, the lateral ones being 

 entire and reflected. Stamens four, didyn;imous ; filaments glabrous, 

 adherent along the whole of the lower side of the corolla, in whose 

 substance they seem to be lost, free in the throat and there divarica- 

 ted after shedding the pollen, and scarcely exserted ; anther lobes diva- 

 ricated, reddish, and applied face to face before bursting. Pistil inter- 

 mediate in length between the longer and shorter stamens ; stigma 

 white, capitate ; style curved a little upwards at the apex, glabrous, 

 and lying with the filaments along the lower side of the tube. Ger- 

 men of four small erect lobes, rising from a white fleshy disk, which 

 is much enlarged on the lower side, and curved upwards, forming a 

 large blunt, fleshy, covering to the germen, notched at the apex for the 

 passage of the style. 

 This plant, native of the mountains near Silhet, was received at the 

 Botanic Garden from the collection of his Grace the Duke of Nor- 

 thumberland at Syon House in October 1839, and flowered at intervals 

 in the Stove during the whole of the following summer. Its structure 

 is very curious, and the generic character therefore remarkably distinct. 



Oxalis mandioccana. 



O. mandioccana, caulescens, erecta ; foliis simplicibus, subcordato- 

 ovatis, acutis, subglabris, ciliatis ; petiolis, peduncnlisque umbel- 

 latis, compressis, subpubescentibus ; pedicellis unifloris ; staminibus 

 monadelphis, intcrioribus pubescentibus stylos superantibus. 



Oxalis mandioccana. Raddi, Mem. Bras. p. 21. — DC. Prodr. i. 696. 



Oxalis impatiens \ Fl. Fluminensis, tab. 181. 



Oxalis aliena, Spreng. Syst. Veget. ii. 4231— i)C. Prodr. i. 6961 



Description. — Stem shrubby, erect. Leaves (3 inches long, 1^ broad) 

 petiolato, crowded at the apices of the branches, simple, subcordato- 

 ovate, acute, slightly bullate, glabrous and shining, ciliated, brij^ht 

 green in front, paler behind, and with a few short hairs on the veins ; 

 middle rib and oblique primary veins distinct, secondary veins ob- 

 scure. Petiole half tlie length of the leaf, flattened, having two sharp 

 edges placed laterally, articulated near the apex, and near the base 

 sli;;htly pubescent, especially on the edges. Peduncles precisely simi- 

 lar to the petioles, and not distinguishable from them, having a simi- 

 lar origin, crowded as they are, solitary, and not always dSstinctly 

 axillary, at first deflected, afterwards erect, abrupt at the apex where 

 the petiole is jointed, and supporting there a number of small green 



