GRAMINA. 



413 



ii. Outer Glumes about half as long as inner. 

 a. Inner setigerous, about as long as floret. 



5. geniculata. Pan. straight: branches, 

 when iu flower, erecto-patent, short. Stalks 

 ensiform. Outer Pale as long as its avvu, 

 much longer than the inner. Cubn genicu- 

 late at base. Root librous. a. 4, 5. Sandy 

 shores. Pisa. Sic— Bert. 



b. Inner Glume not setigerous. 

 * Equalling or exceeding Pale. 



6. setacea. " Pan. lax, secund, straight. 

 Inner Glume exceeding florets. Awn of outer 

 Pale about twice as long as pale. L. setaceous. 

 p. 3. Calc. hills. Pal." — Paul. 



7. panormitana. "Pan. long, secund, 

 spike-like. Spicules sessile, or on very short 

 stalks. Inner Glume equalling florets. Outer 

 Pale 5 -nerved. Awn about three times as long 

 as pale. L. setaceo-convolute. a. 4, 3. Fields. 

 Pal."--Guss. 



8. attenuata. " Pan. erect, nearly equal. 

 Upper Glume about equalling pale. Outer 

 Pale obsoletely 5 -nerved, as long as its awn. 

 L. narrow linear, at last involute, a. 4, 5. 

 Fields on coast. Pal."— Guss. 



9. sicula. " Rac. lax, straight, secund. 

 Upper Glumes about equalling pale. Pales 

 equal; outer 5-nerved, longer than its awn. 

 a. 5. Hill pastures. Sic." — Bert. 



** Glumes falling short of Pale. 



10. Myurus. Pan. compact ; the lower 

 branches short. Glumes membranous. Fits, 

 nearly sessile, aspei', hairless. Awn two or 

 three times as long as pale. Culm sheathed up 

 to base of panicle, a. b. 3, 6. Walls, gravel. 



11. bromoides. Pan. branched, lax : the 

 lower branches lengthened. Glume membra- 

 nous, hardly setigerous. Pale asper at the tip, 

 hairless. Awn two or three times as long as 

 pale. Upper part of Culm smooth and naked. 

 a. b. 5, 6. Brg. 



12. incrassata. Rac. compound, subse- 

 cuud, straight, jointed. Stalks ensiform, very 

 short. Spicules 6-8 -flowered. Glumes acu- 

 minate. Outer Pale about as long as its awn, 

 and as inner pale, 5-uerved. Nerves serrulato- 

 asper. Culm and L. smooth, a. 4, 3. Sandy 

 shores, s. Sic. Sard. — Bert. 



B. Glumes 'not very unequal. Outer Pale 

 acute, or terminating in a seta shorter 

 than itself. 



i. Ligules with rounded auricles. 



13. Halleri. " Pan. contracted, suberect 



when in flower. Spicules 4-5 -flowered; upper 

 solitary, and nearly sessile. Outer Pale 3- 

 nerved ; inner lanceolate, cloven. All L. com- 

 plicato-setaceous. Root fibrous, p. 7, 8. IFigh. 

 Alps." — Koch. 



14. ovina. Pan., when in flower, spreading. 

 Spicules 4-8-flowered. Outer Pale obsoletely 

 5-nerved ; inner oblongo-lanceolate, bidentate. 

 All L. complicato-setaceous. Root fibrous, p. 

 6. Dry meadows and pastures. Koch notices 

 the following varieties : — • 



a. The common foiTD, with which he unites 

 the F. tenuifolia of Sibthorp. 



/8. alpina. Gaud., of more humble growth, 

 with fewer and larger spicules. This, 

 when the spicules have a purple stain, is 

 the Gaudini of Koch. 



y. violacea, Gavb. Fits, shining, variegated 

 with green, violet, aud yellow. 



5. valesiaca. Gaud. Tall, with large spi- 

 cules, and very long, slender root-L. 



e. duriuscula, Linn. TaU, and with large 

 spicules. L. straight or recurved. 



f. glauca, Sche. L. glaucous. 



r). amethystina. Host. L. rigid and pun- 

 gent. 



Q. vaginata, Willd. L. soft and slender. 

 Spicules 8-flowered, awnless. 



Several of these varieties become viviparous 

 on high mountains, and thus form the F. 

 vivipara. Some of them may, perhaps, be 

 species, but no determinate characters have as 

 yet been pointed out. 



15. aurata. "Paa. branched, somewhat 

 spreading. Spicules in 2 rows, at last dilated, 

 as broad as they are long, 4-o-flowered. Outer 

 Pale with 4 lateral nerves, hardJy perceptible, 

 and a short, dorsal seta. L. soft, capiUaiy; 

 those on the stem folded, p. 7, 8. Mountain 

 pastures. Upper VaUais." — Gaud. 



16. longifolia. " Pan. contracted, erect. 

 L. veiy long, filiform, smooth. Pales ciliato- 

 lacerate. p. Liguria." — Kunth, from Vi- 

 viani. 



17. rubra. Pan. spreading: lower bran- 

 ches long, nearly horizontal. Spicules oblong, 

 aljout 3 -flowered, awned. Fits, lanceolate, 

 acute. Stem-L. sometimes slightly convolute, 

 downy on upper side. Root extensively creep- 

 ing, p. 7- Sandy shores. 



18. Iieterophylla. Pan. spreading. Spi- 

 cules oblong, about 5-flowered, awned. Fits. 

 Ian ccolato- subulate. Stem-L. quite flat. Root- 



