60 PATAGONIAN EXPEDITIONS I BOTANY. 



but the last has long, smooth and acute ligules, viridescent spikelets and 

 distinctly 5-nerved floral glume with smooth callus. From the description 

 of P. obvallata Steud. we may conclude that that species also is akin to 

 the present. P. obvallata differs by longer callus hairs (being half as 

 long as the floral glume or nearly so), by oblong or ovate, acute ligules 

 and by erect, not genuflexed culm. D. 



Macl., p. 234 : Substitute Vulpia bromoides (L. sub Festuca] St. Lager, 

 vice Festuca bromoides L. (fide Index Kewensis, Supp. 2). 



Root cespitose, much branching. Culm erect, terete, glabrous, 6 in. to 

 i ft. or less. Leaves setaceous, angled, short, ligule short. Panicle 

 secund, erect ; spikelets upwards, and rachis and rays scabrid : spikelets 

 ovate, about 6-flowered ; glumes acute, the outer nearly setaceous, the 

 inner twice as long and twice as broad, 3-nerved. Flowers subulate, 

 rough, and awned. Lower valve acute, marginally hairy. 



Europe, Africa, America ; Falklands (introduced). 



FESTUCA L. 



F. ARENARIA Lam. Macl., p. 233. 



Syn. Poa robusta Steud.; Calamagrostis maclomana Steud. 

 As synonymous with F. arenaria is also to be placed Calamagrostis 

 maclomana (No. 107 in Herb. Lechler), of which I have seen only sterile 

 plants agreeing exactly with the present species. 



Festuca erecta d'Urv., is found in Fuegia, Falklands, Kerguelen I. and 

 South Georgia Is. In this last it occupied dry parts, whilst the swampy 

 places were occupied by Bolax vegetation, and by mosses such as Poly- 

 frichum (Skottsb.) in South Georgia. 



F. FUEGIANA Hook. fil. Macl., p. 235. 

 Should be deleted, being identical with Poafuegiana (Hook, fil.) Hack. 



Add Macl., p. 237: 

 F. OVINA L. var. GENUINA Hack, subvar. HISPIDULA Hack. Mon. Festuc. 



Europ., p. 87. 

 Magellan. 



