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35. Triticum L- Wheat. 

 Spikelets 3- co-flowered. Flowers distich-- 



ous, placed with their flat sides to the rachis. 

 Glumes 2, lower sometimes wanting. Palets 2, 

 lower rounded, upper 2-carinate, the carinate 

 ciliate. Leaves flattened. Spikelets solitary, 

 immersed into the excavations of the rachis, 

 representing a single spike. 



1. T. REPENS L. — It- Common. Summer. 



36. Hordeum L Bakt,ey. 



Spikelets 1-flowered, with the rudiment of a 

 superior floret, ternate; the central spikelets, 

 the lateral ones depauperate. Glumes 2, linear- 

 lanceolate, ari state; all anterior. Palets 2; 

 lower concave, aristate. Leaves flattened. 

 Spikelets representing a single spike. 



1. H. NODOSUM L. Glumes all setaceous 

 from a broad base. — 0. Oakland. Sum- 

 mer. 



2. H. MURINUM L. Glumes of the central 

 spikelet Lmceolate with a long awn and ciliate; 

 outer glumes of the lateral spikelets setaceous; 

 inner glumes like those of the central spikelet. 

 0. San Francisco. Spring. 



Native of Europe. 



3. H. JUBATUM L. Glumes capillary, run- 

 ning into very long awns. — 0. Marin 

 County. Summer. 



'' Squirrel- tail." 



