PLANTS or MADEIRA. 301 



sepals. It differs however from both in the paler silvery, instead of 

 purple or chestnut, hue of the panicle. In its larger size and habit it 

 agrees better with the Madeiran than with the Azorian plant. 



L. Seuherti therefore is characterized, and may be distinguished from 

 both the above-named plants, by the more distinct or separate and 

 scattered flowers, and the large, deep chestnut-coloured, filmy or chaffy, 

 long and narrow, aristato-acuminate sepals, differing further from X. 

 purpureo-splendens, Seub., in its altogether larger size and longer, 

 broader, smooth and flat-edged leaves. Tor the present, therefore, it 

 is better to record it as distinct, though it is possible that fuller ac- 

 quaintance with the Canarian and Azorean plants may prove all the 

 three to be mere forms or varieties of a single species. It is remark- 

 able however that the Canarian plant in some respects approaches 

 nearer to the Azorean than to the Madeiran, or at least that the Ma- 

 deiran plant is not entirely in characters, as it is in geographical posi- 

 tion, intermediate between the other two. 



Ord. GRAMIKEiE. 



Tkib. horde ace J: {Kth), Koch. 



Gen. Arthrochortijs, Lowe.—Spictd^ solitarise, multiflorse, excava- 

 tionibus spicts nodoso-articulatce recta: immersse, rhachi (ut in Lolio) 

 contrariae. Gluma univalvis, cartilaginea, concavo-linearis, spicidam 

 oltegem eamque includens. Falea inferior cartilaginea, B(ppe suh apice 

 aridata ; superior membranacea, mutica. 



18. Arthrochortus loliaceus^ Lowe. 



Hab. In Insula Deserta Septentrionali Ilheo Chao dicta. 



Gramen annuura lucidum glabrum laete-virens habitu Lepturl {RoU- 

 hcellice) incurvati, L., radice fibrosa, culmis pluribus 6-18-pollicaribns 

 decumbentibus undique diffuso-procumbentibus v. prostrato-adscen- 

 dentibus ramosis nodosis geniculosis foliosis in spicas attenuato- 

 elonsatas nudas crebri-nodoso-articulatas rigidas rectas nee flexuosas 

 mux suumcurvas deraum ad nodos facile diffractas irao fragillimas 

 productis. Folia flaccida latiuscula plana scabra raro Isevia, culmis 

 superne vaginisque scabriuscuUs tumidiusculis stipuHs abbreviato- 



.<?mV,p1nncrP nrodiict?e OTaciliusculae caudatae quodammodo 



truncatis. 



stoloniformes apice deraum acutse subpuugentes 



florae 



scabrse 



rhachi arctissime adnata scabra omnino inclusw, racliidio articulato 



