FLORA OF MADAGASCAR. 533 



Artstida (§ Ch^taria) multicaulis, n. ep. 



A. caulibus elongatis erectis strictis teretibus ramosis, foliis superpositis 

 lineari-subulatis glabris rigidulis, spiculis permultis purpureis in panicu- 

 lum amplam coarctatam ramis diu ascendentibus dispositis, glumis lanceo- 

 latis acutninatis arete convolutis, florali in aristis tribus continuls longis 

 scabris producto. 



Stems stiffly erect, 3 feet long exclusive of the panicle- Stem- 

 leaves 3-4, sheaths 3-4 in. long ; blade |-1 foot long, stiffly 

 erccto-patent. Eod-panicle a foot long ; those of the side- 

 branches smaller ; branches short, slender ; lower many in a 

 ■whorl. Spikelets, including the awns, about an inch long ; cen- 

 tral awn twice as long as the glumes, all the three slender and 

 erect— Baron 4279! 4298 ! 



EOTBOELLIA GRACILLIMA, n, Sp. 



Dense caespitosa, foliis basalibus suhulatis gracillimis strictis erectis; 

 caule simplici foliis 2-3 reductis praedito, spiculis in spicam elongatam 

 dispositis, rhachi gracih glabro articulate sulcato, gluma sterili exteriore 

 oblongo-Ianceolata rigidula purpurea internodio aequilonga dorso rotundata 

 IjEvia, glumis reliquis brevioribus mernbranaceis, 



Nearly allied to S. ccBsjJitosa^ with which it quite agrees in 

 general habit; but the leaves are even more slender, the stems 

 lono^er and more leafy, the unexpanded spikes very slender and 

 coloured purple, and the outer sterile glume rather longer and 

 not ribbed on the back. — Baron 4457 ! 



KoTBOKLIilA CJESPITOSA, n. Sp. 



Dense csespitosa, foliis subbasalibus elongatis subulatis gracilibus strictis 

 erectis, caule simplici folio reducto ad spicae basin praedito, spiralis in 

 spicam elongatam dispositis, rhachi gracili glabro articulate sulcato, gluma 

 sterili exteriore oblongo-Ianceolata erecto-patenti internodio aequilongo, 

 reliquis brevioribus mernbranaceis. 



Leaves and stems densely clustered, stiffly erect, the former 

 X_-l^ feet long, pale green, glabrous, not more than i line In diam. 

 riowering-stems, spike included, shorter than the leaves, with 

 a leaf clasping the base of the spike, which is 5-6 in. long. In- 

 ternodes and outer glumes ^ in. long, the latter rigid in texture, 

 pale green, erecto-pateut when the flower expands, furnished 

 with 3 lax ribs on the back. — Baron 4SiQl ! Allied to the North- 

 American 7?. camj}esfrisy Nuttall. 



DfiYEUXIA EMIRNEXSIS, U. Sp. 



1>. caulibus gracilibus erectis, foliis caulinis panels remotis hucaribus gla- 



