356 TRIANDRIA DIGYNIA. ltottboellia. 



sides there are chaffy, filiform bractes at their insertions. 

 flowers alternate in two rows ; one row on each side of the 

 spike. Calyx two-flowered, two-valved. Corol, one herma- 

 phrodite within, and one male without, each has two valves, 

 sometimes there is only one hermaphrodite floret, in which 

 case it has three valves. 



5. R. perforata. Corom. pi. ii. N. 182. 

 Culms erect, smooth, from three to five feet high. Spikes 

 solitary, below the flowers are opposite, and the rachis per- 

 forated. Calyx generally two-flowered ; one flower male, 

 the other hermaphrodite. 

 JBeng. Kurk?. 

 Teling. Panookoo. 



This species is rather scarce, it grows on low rich pasture 

 ground. 



Culms many, erect, simple, round, smooth, jointed, but not 

 piped; from three to five feet high, and about as thick as a 

 crow's quill. Leaves small for the size of the grass, slender 

 and smooth ; margins hispid ; mouths of the sheaths and a lit- 

 tle way up the base of the leaves woolly. Spikes terminal, 

 and from the exterior arils,solitary,peduncled, round, smooth, 

 as thick as a crow's quill, and from three to six inches long ; 

 ,where the flow ers are opposite, there is an oblong perforation 

 of the rachis, so that the backs of the inner glumes of the 

 calyx touch one another. Flowers in pairs, nearly opposite 

 on the lower half or more of the spike ; above alternate, some- 

 times all hermaphrodite, sometimes hermaphrodite and male 

 mixed. Calyx one or two-flowered, two-valved ; valvelels 

 simple ; the exterior one rigid, the interior one firm and 

 white, both obliquely linear-oblong. Corol, when single, 

 hermaphrodite, and three-valved ; when double the exterior 

 one is male, in which case the two have four valves, viz. two 

 valves each ; all membranaceous, in shape conforming to that 

 of the calyx, but smaller. 



