CHAPTEK VII. 



GRASSES GROUPED ACCORDING TO THEIR 

 FLOWERS AND INFLORESCENCES. 



I. Grasses with only one perfect flower in 



THE SPIKELET. 



(1) Inflorescence spikate '. 



A. Inflorescence a spike of simple spikelets. 

 Nardus striata, L. A tough wiry tufted moor-grass, 



with setaceous leaves, secund spikelets with a single 

 rudimentary glume, and a stiff simple hairy style. 

 (Fig. 2.) 



The much rarer Mihora vema about three inches or so high, and 

 Leptwiis, both with flat leaves, also come here. 



Certain superficial resemblances in the habit or inflorescence in 

 Festnca Mywnis and rare forms like Spa/rtina, may occasionally 

 cause hesitation until the spikelets are examined. 



B. Spike with sessile or sub-sessile tufts of three or 

 more spikelets. 



(a) A spike of tufted awned spikelets, in triplets 



at each notch of the rachis, and one or two 



of each triplet barren. 



Hordeum. 



^ See note, p. 87. 



7—2 



