412 
97. GRAMIXE^. 
side of 1. not miich raised uor nearly hiding the intenn. surface 
of the leaf. Eachis glabrous or downy with fomard prickles on 
the angles. Gl. scarcely keeled, acimiinale-subulate ; ribs 
reaching the tip. — ^. littormm ; glaucous, 1. involute, pales mu 
cronate. Gl. more strongly keeled, and pales blunt although 
mucronate ; otherwise like the tj-pe. — Common. /3. Sea-shores. 
P. VI. Couch-grass. E. S. I. 
3. T.pun'geins (Pers.) ; spite close, gl. with 7 — 9 thick ribs 
not exceeding ^ the 5 — 12-tl. spikelet rough on the keel, lower 
pale acute, axis aspei'ous, rachis nearly or quite smooth not 
brittle, I. with involute edges the many thick closely-placed ribs 
slightly rough and each bearing a row of acute points above, 
upper part of 1. wholly involute (subulate and rigid), stoboli- 
ferous. — St. erect. Ribs on upper side of 1. so broad and so 
elevated as nearly to hide the interm. part of the leaf. Gl. 
keeled ; ribs reaching the tip. Lower pale of our plant usually 
awned. Producing erect ban-en leafy clustered shoots. — Sea- 
shores. P. YU. E. S. I. 
4. 7'. aciitum (DC.) ; spike rather close, gl. triih 5 — 7 slender 
elevated rihs blunt or apiculate not exceeding | of the 5 — 8-fl. 
spikelet, lower pale blunt mucronate, axis downy, rachis smooth 
or slightly rough at the angles not brittle, 1. flat or with involute 
edg'es the many thick closely placed nis roiigh with minute sharp 
pomts (asperous) above, stoboliferous. — T. laxian Fr., Bab. T. 
acutum DC. not Fries. — St. prostrate or ascending. Ribs of the 
1., on each of which there is usually a deciduous row of hairs, 
not so completely hiding the intervening hollows as in Sp. 3. 
CtI. keeled ; keel often with forward bristles, reaching the tip or 
forming a slight mucro. Lower pale rarely shortly awned. 
Producing decumbent and ascending, baiTen, leafy, clustered 
shoots. — Sandy sea-shores. P. YII. VIH. E. S. L 
5. T.Jun'ceitmCL.); spike rather loose, jrZ. ?t;t<^ 9 — 11 sknder 
scarcely elevated ribs blunt equalling at least | of the 4 — 8-fl. 
spikelet smooth on the keel, lower pale blunt rarelv mucronate, 
axis smooth or slightly downy, rachis brittle smooth, 1. involute 
with many thick ribs with much s}rreuding hair above, stoboli- 
ferous. — i. B. 814. P. 63. — St. prostrate. The short hairs on 
the ribs of the 1. spread so as to cover the intemi. spaces. Rachis 
easily separating above each spilcelet. Gl. rounded or truncate 
at the tip ; ribs not reaching the tip. Producing decumbent 
barren leafy shoots.— Sandy sea-shores. P. VII. VIII. E. S. I. 
\_T. cristdtum (Schreb.) ; synkelets closely imbricate, gl. with a 
terminal awn, outer pale with an awn about as long as itself, 
rachis and axis slightly downy, 1. hairy above, st. rough. — E.li. 
2267. — " On steep banks and rocks by the sea-side between Ar- 
broath and Montrose." Mr. G. Don. ' P. VII.] S. 
