ARTIFICIAL KEY. 



97. The Grass and Bamboo Family. 



Stems terete, often hollow with solid often swollen nodes, 

 L. distichous with split sheaths and usually with a conspicu- 

 ous ligule . Spikelets composed of distichous imbricating 

 bracts (glumes) of which the 2 lowest are usually empty, a 

 bracteole (palea) is opposed to the glume on the very 

 abbreviated floral pedicel, and often wraps round the flower 

 and fruit (cp. Cariceae above). Perianth or of very 

 minute swollen scales (lodicules). Anthers versatile. Styles 

 2, rarely 3 with feathery stigmas. Fruit dry, usually terete. 



97. Gramine© (p. 555). 



ARTIFICIAL KEY. 



Table I. 



The following families have their minute flowers crowded 

 in such a way that the number of stamens in each flower may 

 be difficult to ascertain :— 



A. Flowers without bracts or perianth (a 

 few Aracea? have a very reduced 

 perianth), but a sheath or spathe may 

 enclose the whole inflorescence. 



Stamens or anthers on a fleshy axis or 

 spadix, the carpels or. ovaries occupy- 

 ing a separate portion of the axis 



. Perianth 0. Stamens or ovaries crowded 

 mixed with peltate bracts on a fleshy 

 axis. Stamens always on separate 

 axes from the ovaries 



Flowers crowded inside fleshy recep- 

 tacles or figs • 



94 



Araceaa (p.549) 



Piperacese 

 (p, CS3) 

 Horaces 

 (p. 391) 



