314 GRAMINE;E. [Hordeum. 



lateral (both the valves being on one side of the spikelet), 

 2 3-flowered, all perfect. Corolla 2-valved Name, eXv^ov, 

 given by the Greeks to the Panic- grasses, perhaps because 

 they grew abundantly about Elyma in Greece. ( Theis.) 



Triandria. Digynia. 



1. E. arenarius, Linn. Upright Sea Lyme-grass. Spike 

 close, erect ; spikelets in pairs, hairy ; florets awnless, as long 

 as the lanceolate valves of the calyx ; leaves involute, pungent. 

 Br. Fl. ed. 3. p. 55. E. Fl. v. i. p. 177. E. Bot. t. 1672. 



Sandy sea-shores. Sand-bank at the western extremity of Bear, 

 County of Cork ; Mr. J. Drummond. Donegal coast, near Dunfa- 

 naghy, and coast between Ballyshannon and Sligo ; Mr. E. Murphy. 

 FL July. 1. Root much creeping in the loose sand ; hence it be- 

 comes of great value, like the Ammophila arenaria, for preserving a 

 considerable part of our coasts and those of Holland from the en- 

 croachments of the sea. Culms three to four feet high, glabrous. 

 Leaves glaucous, pungent. Spike four to six inches long. Spikelets 

 of about three flowers, on the rachis. Calyx-values two, lanceolate, 

 acuminate. Valves of the corolla resembling them, but the ext. one 

 broader ; int. bifid at the point, angles of the folds ciliated. 



24. HORDEUM. Linn. Barley. 



Calyx lateral, 2-valved, single-flowered, ternate ; central floret 

 perfect, lateral ones mostly imperfect (having often at the 

 back of the inner valve a bristle or abortive floret.) Outer 

 valve of corolla awned. Fruit incorporated with the corolla. 

 Name of dubious origin. Triandria. Digynia. 



1. H. murinum. Linn. Watt Barley. Calyx-valves of the 

 intermediate floret linear-lanceolate, ciliated; those of the lateral 

 florets setaceous, scabrous. Br. Fl. ed. 3. p. 55. E. Fl. v. i. 

 p. 179. E. Bot. t. 1971. 



Waste ground and by road-sides : very common near Dublin. Fl. 

 June, July. 0. 



2. H. pratense, Huds. Meadow Barley. Lateral flowers 

 imperfect, with shorter awns ; all the calyx-valves setaceous 

 and scabrous. Br. Fl. ed. 3. p. 55. E. FL v. i. p. 180. E. 

 Bot. t. 409. 



Moist meadows, about Dublin, Cork, and Belfast, &c. FL July. 

 0. Culm erect, two feet high. Leaves scabrous. 



3. H. maritimum, With. Sea-side Barley. Calyx-valves 

 smoothish, the interior one of the lateral florets semi-lanceolate, 

 the rest setaceous. Br. FL ed. 3. p. 55. E. Fl. v. i. p. 180. 

 E. Bot. t. 1205. 



Light dry pastures near the sea. On the shore between Swords and 

 Rush ; Mr. J. White. Fl. July. 0. Smaller than H. murinum. 

 Leaves glaucous ; awns roughs I have not seen Irish specimens of 

 this plant, and have some doubts of its being indigenous. 



