170 MONOCOTYLEDONS. GRAMINEiE. Bromus. 



leaves linear-lanceolate, root creeping, p. 40. — Moht pas- 

 tures, 



23. TRITICUM. 

 Glumes 2-valved, many-floueied; valves opposite, solitary, near- 

 ly equal. Perianth 2-valved; valves lanceolate; ext. one acu- 

 minated or lengthened into an awn. Caryopsis adnate with 

 \\\e perianih. Rachh zigzag, toothed, {f'/otvers spiked.) 



1. Tt. jnnceum, valves of the glume obtuse much ribbed with 

 4 — .5 awnless flowers, leaves involute pimgent, root creeping. 

 p. 44. — Sea-coast. 



2. Tr. repcns, valves of the glume much nerved with from 4 — 8 

 avvned (rarely awnless) flowers, leaves plane, root creeping. 

 p. 44. — JVasie places. 



3. Tr. cavinjim, valves of the glume awned (mostly 3-) nerved 

 with about 5 awned flowers, leaves plane, root fibrous, p. 44. 

 — IVoods and hanks. 



4. Tr. cristatum, valves of the glume subulate keeled aristate 

 scarcely nerved of abotit 4 avvned flowers, spikelets much 

 crowded, p. 45. — Sea-side, very rare. 



5. Tr. loUaceiim, spike secund, valves of the glume indistinctly 

 3-nerved obtuse of many awnless flowers, root fibrous an- 

 nual, p. 45. — Sea- coast. 



24. BROMUS. 

 Glume of 2 valves, many-flowered. Perianth bivalved ; valves 

 lanceolate ; ext. one awned below the extremity. Caryopsis 

 adnate with the perianth. (Inner valve fringed. Sm.) 

 * Ann terminal. Raceme spiked. 



1. Br. STjlvaticuSy raceme spiked slightly drooping, spikelets di- 

 .stichous linear erect remote, awns straight longer than the flo- 

 rets, p. 40. — IVoods. 



** Awns from below the point of the perianth. Panicle branched. 



2. Br. secalinns, panicle spreading, peduncles but little branch- 

 ed, spikelets oblongo-ovate (ovate, Sm.) compressed of about 

 10 subcvlindrical glabrous rather remote flowers longer than 

 the awn. p, 41. — Fields. 



3. Br. velittimis, panicle spreading, peduncles but httle branch- 

 ed, spikelets oblongo -lanceolate compressed of about 12 cy- 

 lindrical pubescent subimbricated florets, awns longer than the 

 glume (at length patent). /;. 41. — Fields. 



4. Br. mollis, panicle erect close compound, spikelets ovate sub- 

 compressed, florets imbricated depressed pubescent, awn 

 straight about as long as the glume, leaves very soft pubescent. 

 ^.41. — Pastures. 



5. Br. racemosus, panicle erect, peduncles simple, i-pikelets ovate 



