KET. 



219 



and smaller than the pistillate, the latter more rigid with 

 lengthened, plumose stigmas. ' 



Brizopyrum spicatum, Hook. 

 Gr. IV. 32. ' 



W. IV. 41. 



II. Spikelets composed of perfect and staminate 

 flowers. Panicles 6i4 



III. Spikelets with the flowers always perfect (or 

 with one or a few additional neutral or rudimentary ones). 



619 



614. Spikelets (5- to 10-flowered) all either staminate or 

 pistillate, except one or a few perfect ones. Styles much 

 protruded at the apex of the flower. Lower pale flattened- 

 boat-shaped, obscurely many-nerved, acute, somewhat coria- 

 ceous. Spike oblong, flattened, 1 inch long 613, 1. 



Spikelets (2- to 5-flowered) with only 1 or 2 stami- 

 nate flowers 615 



615. Flowers surrounded by a tuft of long, silky hairs 

 from the axis of the spikelet, equalling them in length. 

 Spikelets naiTowly lanceolate, with 3 to 5, rarely more 

 flowers — the lowest one staminate, the rest perfect. Glumes 

 very unequal. Lower pale naiTowly-awl-shaped, thrice the 

 length of the upper. Panicle loose, nodding. 



Fhragmites communis, Trin. 

 Gr. V. 39. 

 W. IV. 45. 



Flowers not surrounded by a tuft of long hairs. 

 Spikelets 2- to 3-flowered 616 



616. Spikelets 3-flowered, the 2 lower flowers staminate, 

 awnless, or awned, the middle one perfect, with 2 stamens, 

 awnless. Glumes as long, as the flowers.. Hierochloa. 



Gr. VIL 53. 

 W. II. 24. 



Spikelets 2-flowered — one flower staminate, the 

 other perfect ^ 617 



617. Lower flower staminate. Glumes unequal 618 



Lower flower perfect, awnless; upper one staminate, 



its lower pale awned from the back, a little below the tip. 



Holcus lanatus, L. 

 Gr. VI. 52. 

 W. n. 25, 



