FESTUCA— HIEROCHLOA 353 



(1) Stems densely tufted, without root-stalks 



or stolons 



(a) Stems 1-8 in. high; spikelets 2-4-fiow- 



ered; lemma not twice as long as the 

 lower glume, with an awn 1-2.5 mm. 

 long F. brachyphylla 



(b) Stems 8 in.-2.5 ft. high; lemma more 



than twice as long as the lower glume, 



with an awn 1-4 mm. long F. ovina 



(2) Stems with root-stalks or stolons F. rubra 

 b. Leaves flat, 2-5 mm. wide 



( 1 ) Awn longer than the lemma F. Jonesii 



(2) Awn 1-2 mm. long or none 



(a) Spikelets 5-9-flowered ; upper glume 3-5- 



nerved F. eldtior 



(b) Spikelets 3-5-flowered ; upper glume 1- 



nerved or 3-nerved at base 

 x. Panicle open, spreading; leaves 2 mm. 



wide F. scabrella 



y. Panicle spike-like ; leaves 2-4 mm. wide F. confinis 



Graph ephorum Desvaux 1810 

 (Gr. graphe, pencil, phora, bearing, from the tuft of hairs on the axis) 



PL 46, fig. 9. 



Spikelets 2-4-flowered, flattened, in a panicle, the axis hairy and ex- 

 tending beyond the flower ; glumes acute, keeled ; lemma longer than the 

 glumes, 3-5-nerved, entire, sometimes with a short awn below the apex, 

 palet narrow ; perennial. 

 Stems 1-2.5 ft. high; panicle 2-6 in. long; spikelets 5- 



6 mm. long G. melicoides 



Hierochloe Beauvois 1812 Holy Grass 



(Gr. hieros, sacred, cliloe, grass, from its use on saints' days) 

 PL 46, fig. 28. 



Spikelets 3-flowered, in panicles, terminal Mower perfect, the others 

 staminate ; glumes nearly equal, acute ; sterile lemma and lemma somewhat 

 shorter, obtuse, entire or 2-toothed. sometimes awned, palet hairv at the 

 tip ; sweet-scented perennial. 



Stems 1-2 ft. high; panicle 2-4 in. long; spikelets 4-6 

 mm. long H. odordta 



