76. Bulbous Bluegrass

Bulbous Bluegrass (Poa bulbosa ssp. vivipara) is an introduced grass that grows in disturbed areas and dry places.  Its a very distinctive grass because, instead of producing flowers and seeds like grasses usually do, the inflorence produce small bulbs which start to grow on the flowering head.  As the summer approaches, this grass usually dries up, and the bulbs fall off and loose their leaves,  but are able to resprout with autumn rains.  
This species has had an interesting history.  First used in the west as an agricultural crop it was promoted as a weed control in alfalfa fields, where this grass could outcompete other species.  Now it in itself is regarded as a weed in some parts of western North America. 

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