MACLOSKIE I GRAMINE^E. 207 



dorsal twisted awn; palea narrow. Grain furrowed, mostly pubescent, 

 often adhering to the palea. Upper flower often imperfect. 

 Species 30, chiefly in temperate parts of the Old World. 



i. A. FATUA Linn. 



Culm erect, glabrous, smooth. Leaves broad, scabrid, aculeolate. 

 Panicle equal, erect, its rachis scabrid. Spikelets oblong, 3-flowered. 

 Flowers all awned, pilose at base with rufescent hairs. Seeds soon 

 caducous. 



(Europe, in fields) ; S. Patagon., in elevated meadows by Rio Sta. Cruz. 



2. A. HIRSUTA Roth. 



Culm half to more than one meter high. Leaves plane, scabrid. 

 Ligules ovate, rounded. Panicle simple or compound, nodding. Spike- 

 let 3-flowered, having (i) an inferior, fertile long-awned flower, (2) a 

 muticous fertile flower, (3) an upper abortive muticous flower. Glumes 

 lance-acuminate, y-g-nerved, exceeding the flowers. 



S. Patagon., by Rio Sta. Cruz. 



3. A. LEPTOSTACHYS Hook. f. 



Culm 30 cm. tall, slender. Leaves flat, long, shining. Panicle slender, 

 flexuous, nodding, its branches whorled, short, capillary and few-flowered. 

 Floral glume bearded below, bicuspidate, awned between the segments, 

 the aiini reflexed, twice as long as the spikelet. An elegant grass. 



Magellan. 



31. DANTHONIA DC. 



Mostly perennials with flat or convolute leaves and contracted or open 

 panicles. Spikelets 3-many-flowered, rachilla pubescent, extending beyond 

 the 3-more flowers of the spikelet. Empty glumes subequal, keeled. 

 Floral glumes rounded on back, 2-toothed, with a flat, twisted and bent 

 median awn, the teeth sometimes awn-like. Grain free, enclosed in the 

 glume. 



Species 100, mostly in S. Afr. and in warm and temperate regions. 

 (D. antarctica Dzsv.=Deschampsia antarctica.} 



I. D. COLLINA Phil. 



Culms erect, glabrous, 3-nodal. Leaves and sheaths long-pilose, the 

 radical convolute, setaceous, one third as long as the culm ; sheaths of 



