36 TRIANIX DIGYK. 



HAS. Common in woods and thickets. j3. Scotch Alps, plentiful. 

 Fl. June, July. 7/ . 



One to three feet high, slender and delicate in all its parts. Leaves 

 narrow, linear, acute. Panicle with the branches at most erecto- 

 patent. Spikelets not crowded. Cal. valves unequal, ovato-lanceo- 

 late, acute, rather obscurely ribbed. Ext. valve of cor. lanceolate, 

 very obscurely ribbed, pubescent on the keel and hairy at the base, 

 but* very slightly webbed. Inner valves, as, I believe, in all the ge- 

 nus, bifid at the point. There can, I think, be little doubt of the 

 P. glauca being merely an alpine var. of this; glaucous, smaller, 

 with the spikelets rather larger in proportion. Such seems to be 

 the opinion of Schrader ; and Wahlenberg and Gaudin have united 

 the P. cfPsia of E.B. with the P. glauca; the latter considering both 

 as varieties of P. nemoralis. Wahlenberg, indeed, though he makes 

 a species of P. glauca, says that it is as it were intermediate be- 

 tween P. trivialis and nemoralis; " sed colore glauco eximio ab 

 utraque diftert." The P. pulchella of D. Don's MSS. I am sorry I 

 cannot distinguish from the glaucous var. here noticed; except that 

 it is somewhat less glaucous, or, as Mr. Don expresses it, ' ( glauco- 

 virescens."- In all I find at the base of the florets a more or less 

 apparent filamentous, webbed substance. 



15. P. decumbens (decumbent Meadow-grass), panicle nearly 

 simple contracted few-flowered, calyx as long as the 4-flovvered 

 spikelet, ligule a tuft of hairs. Lightf. p. 102 (Festuca dec.). 

 E.B. 1.792. 



HAD. Dry mountain pastures. Abundant in the Isle of Canay, Light/ \ 

 Marsh beyond Fossil, Glasg., Hopk. Ochil hills ; Newburgh and 

 Cathkin hills, Glasg., D. Don. Arthur's Seat; coast of Fife; in 

 Forfar- and Kinross -shires; Breadalbane, Mr. Arnott. Pentland 

 hills, Mr. Greville. Fl. July. 7/ . 



One foot long, procumbent, flowering culm only erect. Leaves linear, 

 rigid, acuminate, hairy as well as the sheaths. Cal. valves nearly 

 equal, lanceolate, acute, nerved, with broad thin margins, scabrous 

 on the keel. Ext. valve of the cor. ovate, nerved or ribbed, having 

 a small tuft of hairs on each side the base ; apex with three teeth : 

 int. valve obtuse, entire at the point, ciliated at the angles of the 

 fold. Habit very different from Poa; and Mr. Brown suggests that 

 it may belong to his genus Triodia. It is Danthonia of Decandolle . 



a Besides the foregoing species of Poa, the two following are to be added 

 as natives of Scotland: but as I have never seen specimens, so as to be able 

 to verify them, or to put them in their proper place in the genus, I think k 

 better to give them in a note. 



1 . P. strlcta, panicle branched, spikelets of 3 flowers ovate, col. glumes 

 lanceolate 3-nerved nearly equal mucronated keeled, florets 5-nerved 

 truncated at the apex villous at the base. D. Don, Descr. of Neiv or Rare 

 Plants ofScotl. p. 4. 



HAB. Pastures in Angus-shire, G. Don. Said to be very near P. pra- 

 tewsis. 



2. P. leptostachya, panicle contracted somewhat racemed, pedicels very short 

 glabrous, spikelets 2-flowered, cal. glumes lanceolate mucronate equal 



