TEITICUM. 445 



2. T. ripens (h.) ; spike rather close, gl. 5 — 7-riblj6d equalling 

 at least | of the 4 — 6-fl. spikelet rough on the keel, lower pale 

 acuminate, a:i-is asperous, rachis with rough angles not brittle, I. 

 mostly flat the many slender ribs each bearing a row of deciduous 

 hairs above, soholiferous. — E. B. 909. P. 62. — L. at first involute 

 afterwards flat, ribs on upperside not much raised nor nearly 

 hiding the interm. surface of the leaf. Rachis glabrous or 

 downy with forward prickles on the angles. Grl. scarcely keeled, 

 acuminate-subulate; ribs reaching the tip. Pales rarely awned. 

 — Common. P. VI. Couch-grass. E. S. I. 



S. T. pun' gens (Pers.) ; spike close, gl. with 7 — 9 thick ribs 

 not exceeding J the 5 — 12-fl. spikelet rough on the keel, lower 

 pale acute, axis asperous, 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), soholi- 

 ferous. — Sy. E. B. 1811. — St. erect, like a corn-field. Ribs on 

 upperside of 1. so broad and so elevated as nearly to hide the 

 interm. part of the leaf. Grl. keeled; ribs reaching the tip. 

 Lower pale of our plant often awned. Producing erect barren 

 leafy clustered shoots. — Sea-shores. P. VII. E. I. 



4. T. acutum (DC.) ; spike rather lax, gl. with 5 — 7 slender 

 elevated ribs blimt or apiculate not exceeding f 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 

 edges the many thick closely placed i-ibs rough with minute sharp 

 scattered points (asperous) above, soholiferous. — Sy. E. B. 1812. 

 T. lamm Fr. — 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 hoUows as in Sp.3. Gl. keeled; 

 keel often with forward bristles, reaching the tip or forming a 

 slight macro. Lower pale rarely shortly awned. Producing 

 decumbent and ascending, barren, leafy, clustered shoots. — 

 Sandy sea-shores. P. VII. VIH. E. S. I. 



5. T.jun'ceum(L.}; spike rather loose, .9?. wi/i 9 — 11 slender 

 scarcely elevated ribs blunt equalling at least | of the 4 — 8-fl. 

 spikelet smooth on the keel, lower pale blunt rarely mucronate, 

 axis smooth or slightly downy, rachis brittle smooth, 1. involute 

 with manv thick ribs with much spreading hair above, soholi- 

 ferous. — E. B. 814. P. 63. — St. prostrate. The short hairs on 

 the ribs of the 1. spread so as to cover the interm. spaces. Rachis 

 easily separating above each spikelet. 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. 



