44 



flowered : bracts obtuse : ciliated angles of the achenium not 

 lineate, faces convex : flowers white. 



Ditches and riTulets in Calcutta and Bengal, flowering in the 

 rainy season. 



(17) P. ErFTTsuM. {Meissn.) 



Ident. Dec. 1. c. p. 93. 



Syn. P. hernarioides, a. Meissn. in Wall. pi. As. rar. III. 

 p. 62. — P. Indicum, Soth nov. sp. p. 208 ? 



Spec. Ch:4.e. Procumbent, glabrous : stems many, branched, 

 elongated, filiform, thinly striated, smooth : ochreae small, hyaline, 

 nerveless, toothed and lacerated, and with the leaves shorter than 

 the elongated iaternodes : leaves narrow-linear, veinless : axils 

 3 — 5-flowered: pedicels at length almost equalling the flower, 

 articulated in the middle or above : achenium equalling the small 

 calyx, faces ovate, shining, obsoletely striated at the apex. 



Oude. 



(18) P. ILLEOEBEOIDES. (Meissn.) 

 Ident. Dec. 1. c. p. 94. 

 Syn. P. hernarioides, h. Meissner in Wall. I. c. p. 62. 



Spec. Chae. Procumbent: stems many, filiform, branched, 

 striato-angled, smooth : ochreae very short, white, somewhat 

 nerveless, densely lacerate-eiliate : leaves linear, obtuse or sub- 

 mucronulate, somewhat equalling the short internodes, upper 

 ones dwarf revolute at the margin: flowers in the upper axils 

 1 — 2, subsessile, very small: achenium enclosed, sharp-angled, 

 smooth, ' shining. 



Bengal.' 



(19) P. ciiiosrM. (Meissn.) 



Ident. Dec. 1. c. p. 95. 



Syn. P. exiguura, Meissn. in Wall. I. o. p. 62. 



Spec. Chae. Stem low, erect, branched from the base, de- 

 cumbent, striated, slightly scabrous: ochreae hyaline, tawny, 

 somewhat nerveless, densely ciliated : leaves longer than the 

 internode, narrow-linear, acute, l-nerved, veinless, slightly sca- 

 brous: axils 1— 2-flowered: pedicels shorter than the ochreae and 

 calyx, jointed at. the base: calyx very small, keeled and trigonal : 

 achenium enclosed, minute, smooth, shining. 



Silhet. Upper Assam. 



