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ones collateral; lower glume sometimes want- 

 ing. Palets shorter than the glumes, the lower 

 enclosing the upper. 0. Leaves narrow and 

 flattened. Spikelets solitary, immersed into 

 alternate excavations of the rachis, the inflores- 

 cence representing a slender spike. 



1. L. INCUBVATUS Trin. Tiburon. Marin 

 County. Spring. 



Native of the Mediterranean region. 



34, Lolium L. Darnel. 



Spikelets co-flowered, flowers imbricate, dis- 

 tichous. Glumes 2, blunt, the posterior often 

 wanting. Palets 2: the lower concave, some- 

 times aristate; upper 2-carinate with the cary- 

 opsis adhering. Leaves flattened. Spikelets 

 solitary, immersed into alternate excavations 

 of the rachis, placed edgewise with it, and rep- 

 resenting a single spike. 



1. L. PERENNE L. Glume much shorter 

 than the spikelet. It- Common. Summer. 



Native of Europe, but frequently escaped 

 from cultivation. 



2. L. TEMULENTUM L. Glume as long as the 

 spikelet. 0. Common. Spring. 



Has the reputation of being a narcotic poi- 

 son, but varies considerably in regard to inten- 

 sity and character of the symptoms caused by 

 it. 



H 



