422 98. GEAMINEiB. 



30. AEEHENATH'ERtrM Pol. dc Beauv. Oat-grass. 



1. A. eldtius (M. & K.) ; 1. flat.— -Hbfctts Sm., E. B. 813. P. 

 25.— Height 2—3 feet. Root fibrous. Knots of the at. gla- 

 brous, sometimes downy. Pan. long, ultimately close. Spike- 

 lets greenish. — (3. A. hulhosum (Lindl.) ; base of the St. -with 

 swollen knobs, knots downy. P. 26.— Hedges and pastures. 

 P. VI. E. S. I. 



Tribe XI. Festucea. 



31. Trio'bia R. Br. Heath-grass. 



1. T. decum'hens (Beauv.) ; pan. racemose, spikelets few oval, 

 fl. about 4 scarcely extending beyond the glumes without awns. 

 —E. B. 792. P. 30.— St. 6—12 in. high. L. flat. Sheaths 

 rather hairy. Ligule a tuft of hairs. Spikelets few, 1 — 7. Gl. 

 smooth, coriaceous. Lower pale with 3 points, 5-ribbed, hairy 

 at the base. — Dry places and heaths. P. VII. E. S. I. 



32. K(ele'eia Pers. Crested Hair-grass. 



1. K. cristdta (Pers.); pan. compact spikelike interrupted 

 below, lower pale acute, 1. narrow rough at the edges ciliate. — 

 Aira Sm., E. B. 648. P. 19. — Root crowned with the undivided 

 sheaths of the old leaves. St. 6 — 18 in. high, downy particularly 

 in the upper part. L., gl. and pales downy or glabrous. Gl. 

 finely toothed on the keel. Lower pale finely toothed on the 

 mibrib. Sometimes the 1. become convolute. In dry places 

 the 1. are much shorter than the st, in damper places long and 

 often nearly equalling the stem. — Dry pastures. A large form 

 on Ben Bulben, Co. Sligo. P. VI. VII. E. S. I. 



33. Mel'ica Linn. Melic. 



1. M. miifl6ra (Retz) ; pan. branched slightly drooping, 

 spikelets erect with 1 perfect glabrous fl., gl. equalling pales, 

 1. flat, liyuh short blunt with a slender acuininate lobe on one 

 side.— ^. B. 1058. P. 18.— Shady and rocky woods. P. V. 

 VI. E. S. I. 



2. M. nutans (L.) ; pan. a nearly simple lax secund raceme, 

 spikelets drooping with 2 perfect glabrous fl., gl. falling short 

 of pales, 1. flat, ligule short bhmt.- — E. B. 1059. P. 18. — Damp 

 shady woods in hilly districts. P. V. VI. E. S. 



