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1. S. seticzra Presl. Panicle open, with 
spreading rays; lower palet tuberculate, only 
the nerves hairy—Common. Summer. 
2. S. EMINENS Cas. Panicle open, with 
spreading rays; lower palet hairy all over.— 
Coast Ranges. Summer. 
3. §. vinmpuLA Trin. Panicle narrow, with 
short erect rays.—Coast Range. Summer. 
All the species of Stipa are by their long 
awns more or less injurious to the wool of sheep, 
which they make impure and intractable. Some 
species even endanger the life of the animals, 
as their awns are liable to work their way 
from the wool through the skin into the lungs. 
12, Deyeuxia Clar. (Calumagrostis Adans). 
Spikelets 1-flowered, flowers sessile, with a 
bearded base and the rudiment of a superior 
flower, reduced to a plumose pedicel. Glumes 
2, canaliculate, awnless. Palets 2; inferior 
aristate, superior 2-carinate.—2¢. Leaves flat- 
tened. Panicles branched. 
1. D. Avgvtica Trin.—San Francisco. Sum- 
mer. 
13, Spartina Schreb. Marsa Grass. 
Spikelets 1-sided, sessile, 1-flowered; flower 
naked, sessile. Glumes 2, carinate, awnless; 
the upper embracing the lower, which is much 
smaller. Palets 2, awnless; the lower com- 
pressed; the upper larger navicular. Ovary 
