THE GRASS TRIBE \M 



4. G. aquatica (Reed Manna-Grass). A stout, reed-like grass, 

 4-6 feet high ; panicle much branched, about 1 foot long ; spikelets 

 \ to nearly \ inch long, 8-io-flowered. Easily distinguished from 

 G. fluitans by the more numerous, shorter spikelets. Wet places ; 

 *requent. Fl. April to August. Perennial. 



** Flowering glumes with 5 faint veins 

 f Outer glumes with 3 veins ; panicle i-sided 



5. G. maritima (Sea Manna-Grass). Rooislock creeping ; stems 

 up to 1 foot high ; leaves rather short, usually convolute ; panicle 

 erect, rather stiff, usually about 3-4 inches long ; branches erect or 

 the lower spreading ; spikelets about inch long, 6- or S-flowered ; 

 glumes about \ inch long. Maritime sands ; frequent. Fl. June, 

 July. Perennial. 



6. G. Borreri (Borrer's Manna-Grass). Rootstock not creeping ; 

 leaves flat ; panicle contracted, 3-6 inches long, with very short, 

 finally spreading branches ; spikelets smaller than in the last, 4-7- 

 flowered ; flowering glumes ending in a very small rigid point. 

 Salt marshes on the east and south coasts ; rare. Fl. June to 

 August. Perennial. 



7. G. procumbens (Procumbent Manna-Grass). Stems only 3-6 

 inches high, stout, rigid ; leaves flat, short, glaucous ; panicle 

 1-2 inches long, with short, rigid, ascending branches ; spikelets 

 rather crowded, nearly sessile, about 4-flowered. Muddy sea- 

 shores ; not common. FL June, July. Annual. 



If Outer glumes with 3 veins ; panicle regular 



8. G. distans (Reflexed Manna-Grass). Very similar to G. mari- 

 tima, but the rootstock is scarcely creeping, the leaves are flatter, 

 the panicle much more spreading, not i-sided, with long slender 

 branches, and the spikelets are smaller ; glumes not more than A 

 inch long. Sandy pastures and waste places, chiefly near the sea ; 

 rare. Fl. July, August. Perennial. 



fff Outer glumes -with I (rarely 3) veins f panicle i-sided 



9. G. rigida (Hard Manna-Grass). Tufted, usually about 6 

 'ncnes high ; stems stiff ; panicle lanceolate, about 2 inches long, 

 i-sided, rather crowded ; branches slightly spreading ; spikelets on 

 short, stiff stalks, linear, about \ inch long, each about 6- or 8- 

 flowered. Dry places ; common. Fl. June. Annual. 



10. G. loliacea (Dwarf Darnel-like Manna-Grass). Usually 

 smaller than the last, and the panicle is reduced to almost a simple 

 spike ; spikelets almost sessile, alternate in 2 rows, but turning to 



