268 PATAGONIAN EXPEDITIONS : BOTANY. 



perfect flower. Perianth of 4-6 setae, persisting, and exceeding the 

 achene. 



(S. Chili.) Patagon.(?). 



3. E. SODALIUM (Hariot) Franchet. 



Culm 30 cm. tall, the leaves shorter, their apex pungent, their sheaths 

 and the scales of the i -flowered spikelets black. Panicle contracted, 

 io-i2-spiculate. ' Perigonial setae (12?), slender, persisting, exceeding 

 the ovate achene and its 3-branched style. 



Fuegia, forming peat near Cape Horn, and subalpine in Navarino I. in 

 Beagle Ch. 



8. UNCINIA Pers. 



Spike simple, terminal, monoecious, its scales imbricated with numerous 

 male flowers in each of the upper scales, and solitary female flowers in the 

 lower. Scales not keeled ; the achene enclosed in a utricle, at the base 

 of a slender axis which usually protrudes as a "seta" or "awn" and usu- 

 ally ends in a hook. 



Species 30, mostly southern, in Austral, and N. Zeal.; one in Fer- 

 nandez ; and the following. 



KEY TO THE SPECIES. 

 A. Smooth. 



b. Culm thick at base ; leaves longer, linear. Awn-protrusion as long as the utricle. 

 c. 7 cm. Scales whitish. Awn-extension reddish, ciliate-edged. phleoides. 



C2. 60 cm. Scales white-margined. Utricle shining. macrophylla. 



b2. Culm slender, 90 cm. tall. Leaves large, flat. Spike large, cylindrical ; scales white- 

 margined upwards. Awn-protrusion half as long as the apically pilose utricle. 



cylindrica. 

 3. Culm stoloniferous, crowded-leafy at base. Scales hyaline-margined. 



c. Leaves setaceous, shorter than the culms. Awn straight. microglochin. 



c2. Leaves narrow, plicate. Awn-protrusion (twice ?) as long as the utricle, yellow. 



Culm 20 cm. sinclairii. 



A2. Smooth, save the scabrid edges and mid-nerves of the leaves. 



b. Cespitose, creeping, 7 cm. Leaves narrow, involute. Spike capitate, naked. Scale lan- 

 ceolate, pale-nerved. Awn-protrusion half as long as the utricle. kingii. 

 b2. Culm simple, 30 cm. tall, leafy below. Leaves linear. Spike i-bracteate. Scale- mar- 

 gins rusty. Awn-protrusion as long as the rough-edged utricle. macloviana. 

 3. Root thick ; culm 45 cm. high. Leaves plane, flaccid, as long as the culm. Spike lax. 

 Scale-margins brown, smooth. Awn-protrusion as long as the apically setulose utricle. 



lechleriana. 



4. Robust; culms 75 cm. tall. Leaves broad-linear, as long. Spike thick, cylindrical. 

 Awns 6 times as long as utricles, projecting all around. macrotricha. 



