CATALOGUE OF PLANTS. 183 digenous. The Island forms appear for the most part to be indigenous northern and coast forms, and abound on beaches and on banks by the shore. 760 Var. glaucum (Desf.), Boiss. Triticum repens, L., var. inter- medium, Fries. A glaucous, rigid, maritime form, with large crowded spikelets BR. and glumes blunt or mucronate. Seal Harbor (Redfield);— Northeast Harbor; Southwest Harbor, etc. (Rand). 761 Var. pilosum, Scribner. Upper surface of leaves pilose, rhachis of spike pubescent to DA R. hirsute, flowering glumes awnless or short cuspidate pointed. Southwest Harbor (Rand). This, however, may be the same as var. agreste, Anders. Other well marked forms are numerous; but it seems impos- sible to identify them with any certainty without a careful comparison with authentic specimens in European herbaria. 762 A. caninum (L.), Roem. & Schultes. Triticum caninum, L. BAR, DR, Pie Rare. Field near the head of Northeast Harbor (Rand). HER, XC, BXT+ Naturalized from Europe, and also indigenous. Probably intro- duced on the Island. Milton. RSA - T HORDEUM, L. BARLEY. 763 H. jubatum, L. SQUIRREL-TAIL GRASS. C, P., Rdu X, S., W. Common on the coast. Bri., N., Cal.* BR, DA R. ELYMUS, L. WILD RYE. LYME GRASS. 764 E. Virginicus, L. BAR. T. Common on the coast. 765 E. mollis, Trin. Muddy or sandy shores on the coast; frequent. Considered C, by many authors as identical with E. arenarius, L., which Rdu X. occurs on the Pacific coast. Bri., Bar., D., T.