296 PATAGONIAN EXPEDITIONS I BOTANY. 



M. GRANDIFLORUM (Hook. f. sub Rostkovio}. 



Creeping. Culm rigid, terete, naked ; leaves similar, but thicker and 

 longer. Flower solitary, large, 3-bracted. Perianth-leaves linear, acute- 

 subulate, slightly pungent, unequal ; anthers long, 2-cusped, filaments 

 short. 



W. Patagon. ; Magellan ; Fuegia to Cape Horn ; Falklands. Common 

 in woody regions and swamps, to 400 m. high (Dusen) ; used for weav- 

 ing into baskets (J. D. Hook.). 



2. ROSTKOVIA Desv. 



Rush-like, having a naked culm, often sheathed, and with one linear or 

 terete leaf. Flower solitary, terminal, its perianth-leaves distinct. Ovary 

 i-locular ; capsule globular-oblong, many-seeded. 



Only i species, viz. : 



R. SPH^EROCARPA Desv. (R. magellanica Hook. f). 



Rootstock not creeping. Culm 15-30 cm. high, compressed. Radical 

 leaves plane, glabrous, sheathing and exceeding the culm. Perianth- 

 leaves subequal, linear, acute, scarious-margined, as long as the capsule. 

 Flower subtended by a long bract. (Fig. 6 in Eng. & Prantl, ii, 5, p. 6). 



S. Patagon., Cordilleras (J. B. Hatcher; in fruit Feb. 15, 1897) m tne 

 rainy wood-region (Dusen) ; Fuegia to Cape Horn and Campbell's I. 

 Rare in the steppes. 



R. SPH^EROCARPA PUMiLA Alboff. (sub v. R. magellanica puniild]. 

 Small, 5-7 cm. high. Leaves longer. Perianth-leaves shorter, less 

 acute. Style long. 



Alpine, by Rio Grande near Ushuaia. 



3. JUNCUS Linn. Rush. 



Chiefly glabrous perennials, with scape-like culms, leaf-sheaths open at 

 one side, leaf-blades terete or grass-like. Flowers variously panicled, 

 often i -sided. Seeds several, sometimes with tails. 



Species 150, most in N. Temperate zone. 



KEY TO THE SPECIES. 



A. Lowest leaf of the inflorescence terete, like a continuation of the stem, with a seemingly lat- 

 eral inflorescence. 

 b. Flowers bracteolate, inserted singly. Stamens 6. 



