GRASS FAMILY. i 1 



to 6, thin, 7-nerved, 11 to 14 lines long with 2 long, hyaline teeth 2 to 3 lines 

 long; awn l 1 ! to 2 in. or more long, rigid, scabrous, arising from below the 

 teeth; anthers % line long, yellow. — (B. maximus of 1st ed.) 



Native of the Mediterranean Region: naturalized at Stanford University; 

 Berkeley; San Francisco; Suisun .Marshes; San Jose; Tulare. Apr. -May. 

 Now one of our most abundant grasses. 



4. B. hordeaceusL. Soft Chess. Annual, erect, 1 to 1% ft. high; 

 whole plant excepting the stems and uppermost sheaths, softly downy; ligule 

 1 •_. to 1% lines long, truncate, serrate, blades 2 to 4^ lines wide; panicle 

 3 to 5 in. long, erect, rather dense; branches very short, erect; spikelets lanceo- 

 late, turgid, about (3 lines long, 5 to 9-flowered ; bracts acute, with broad 

 scarious margins and tips; lower 3 to 5-nerved; upper 7-nerved; bractlets close- 

 ly imbricate, broadly oval, 7-nerved, margins and apex broadly scarious; awn 

 from below the apex, slender, 1 to 2% lines long; palea distinctly ciliate; 

 anthers yellow, % line long. — (B. mollis L.) 



Native of Europe, naturalized and very common by roadsides and in waste 

 places within our limits and northward and southward. Sometimes called 

 "Poverty-grass." Yar. glabrescexs (Coss.) Shear, differs from the type 

 in having the bractlet glabrous and shining or only scabrous. — Common at 

 Berkeley. 



5. B. hookerianus Shear. Keeled Brome. Perennial; stems stout, strictly 

 erect, 3 to 4 ft. high, the sheaths almost closed, the lower hirsute with long, 

 retrorsely spreading hairs or scabrid, upper sometimes glabrous; ligule about 

 2% lines long; blades 4 to 6 lines wide near the base, often hairy above; 

 panicle 9 to 12 in. long; lower branches 4 or 5, in half whorls, long, scabrous, 

 becoming drooping, shortly branched and bearing their few spikelets only above 

 the middle; spikelets compressed, oblong, 12 to 15 lines long, 7 to 10-flowered; 

 bracts unequal, lower 4 to 6, upper 5 lines long, 3 to 7-nerved; rachilla 

 pubescent; bractlets 7 to 8 lines long, about 7-nerved, densely and minutely 

 pubescent and scabrous; awn 3% to 7 lines long; anthers bright yellow. — 

 (B. carinatus of 1st. ed.) 



Common in the Coast Ranges of middle California; also occurring in the 

 upper San Joaquin Valley. May. 



6. B. carinatus H. & A. Near to the preceding, but smaller in every 

 way; stems slender, 1% to 3 ft. high, often drooping; sheaths more or less 

 hirsute, prominently ciliate at the throat; panicle 4 to 9 in. long; spike- 

 lets more slender, 6 to 9 lines long, mostly 6 (rarely 10) -flowered; bracts 

 sub-equal, 3 to $>/•> lines long; rachilla puberulent; bractlets closely imbricate; 

 awn iy 2 to 3^ lines long. — (B. marginatus of 1st ed.) 



Common in the Coast Ranges from San Francisco to Eureka. May. 



Tribe 8. Hordeae. Barley Tribe. 

 Inflorescence a simple, bilateral spike (rarely normally racemose or pani- 

 culate in some species of Hordeum and Elymus, and abnormally in mon- 

 strosities or luxuriant cultivated varieties of these and other genera). Rachis 

 often flexnons, more or Jess flattened and toothed or deeply notched at tie 

 nodes; often, but not always, jointed at the nodes so that at maturity 

 the internodes fall away with the attached spikelet ; when the rachis is not 

 jointed the rachilla is jointed above the bracts. Spikelets (in ours) in 2 

 opposite rows, solitary or 2 or more side by side at each node, sessile or very 

 rarely pedicellate, all perfect or polygamous or when there are three at a 



