234 PATAGONIAN EXPEDITIONS : BOTANY. 



4. F. ARUNDO Hook. f. (Poa ahpecurus Kunth.) 



5. F. BIFLORA Steud. 



Culm branching at the base, thin, glabrous, not 30 cm. high ; with ster- 

 ile branches in dry sheaths ; culm-sheaths green, ligules oblong, 2 mm., 

 leaf-blades flat, narrow, 1-4 cm. long, 0.5 mm. wide. Panicle very nar- 

 row, racemose ; the rays solitary, i-3-spiculate ; the spikelets lanceolate, 

 2-flowered. Glumes shorter than the flowers, the lower one the longer. 

 Floral glume 5-nerved, obtuse or subacute. Grain obscurely trigonal. 

 Patagon., by saline lakes. 



6. F. BROMOIDES Linn. 



Culm 15-30 cm. high; the leaves linear-setaceous, complicate. Pan- 

 icle secund, spicate upward. The glumes unequal, lanceolate, acuminate, 

 the upper 3-nerved, as long as the lower flower; the lower i -nerved, one 

 third as long. Floral glume scabrous towards the point, its awn twice as 

 long as its flower. 



(Eur.) Falklands, near the settlements, as if introduced. 



7. F. COMMERSONI Franchet. 



Cespitose, glabrous, glaucous. Culms smooth, slender, erect, 50 cm. 

 tall ; leaves shorter, rush-like, rigid, pungent. Panicle short, its lower rays 

 long, spreading. Spikelets 3-4-flowered, mostly viviparous. Glumes 

 purplish, ovate-lanceolate, scabrid, margin ciliate; floral glume larger, 

 setulose. Palea ciliate-keeled. 



Magellan, Churucca ; Fuegia, Beagle Channel, and near Cape Horn ; 

 W. Patagon. (Dusen.) 



F. COMMERSONI VIVIPARA. 



W. part of Magellan Str. (Dusen.) 



8. F. ERECTA d'Urville. 



Leaves setaceous, erect, glabrous, slightly pungent (9 cm.), as long as 

 the subspicate, secund panicle. Rachis very rough, spikelets oblong-lan- 

 ceolate, 3-4-flowered ; flowers erect, approximate ; glumes unequal ; floral 

 glume rough, shortly awned. 



Fuegia to Hermite I.; Falklands. (See note on Gynerium pilosum, 

 P- 213-) 



