12 Chlorideae 



articulated on very short pedicels below the glumes. 

 Glumes •"> : the outer 2 empty keeled very unequal, 

 the third subtending a perfed flower, keeled, equaling or 

 shorter than the second. Palea often larger than itsglume, 

 2-nerved. Stamens •">. Styles filiform, elongated : Btig- 

 mas filiform, papillose or shortly plumose. Grain free. 



1. S. glabra Muhl. Culms simple, stout, 6-15 dm. high; 

 sheaths glabrous, t lie lower ones crowded; leaves 5-7 dm. long, 

 L— 1.5 cm. wide, usually flat, tapering to a long involute tip, 

 smooth; panicles 2-4 dm. long, strict; spikes 5-15 cm. long; 

 spikelets crowded, 10-14 mm. long; empty glumes glabrous or 

 sparingly scabrous on the keel, the first 6-8 mm., the second 

 10-14 mm. long; flowering glume 8-10 mm. long; palea slightly 

 exceeding the glume. 



Occasional in the salt marshes along the coast. Wilmington. 



2. S. foliosa Trin. Culms erect, 6-8 dm. high, stout; sheaths 

 smooth, crowded at least above ; leaves 2-3 dm. long, about 1 cm. 

 wide, smooth, tapering to a long involute tip; panicle 10-15 cm. 

 long, nearly cylindric ; spikes 2-5 cm. long, appressed ; spikelets 

 crowded, 12-14 mm. long, glabrous or the empty glumes usually 

 stoutly ciliate on the keels; the first empty glume narrow, 7-8 

 mm., the second 12-14 mm. long; flowering glume 10-12 mm. 

 long, slightly Bhorter than the palea. 



This has been found at San Diego and may occur within our limits. It is 

 easily recognized l>y its dense spike-like inflorescence and leafy culms. 



25. LEPTOCHLOA Beauv. 

 Mostly rather tal] annual grasses with Hat leaves and 



aumerous spikes forming u simple panicle, spikelets 

 j}— many-flowered, flattened, alternating in '1 rows on one 

 side of the rachis. Glumes 4 many, the 2 lower empty, 

 keeled, 3-nerved. Palea 2-nerved. Stamens 3. Styles 

 distinct. Grain free, enclosed in the scale and palea. 



1. L. mucronata (Michx.) Kunth. Culms .'i-'.i dm. high, 

 erect, branched, Bmooth; sheaths Bhorter than the internodes, 

 smooth; ligule short, lacerate-toothed ; leaves 6-18 cm. long, 

 L'-ti mm. wide, scabrous; Spikes numerous, slender, rigid, ascend- 



