GRAMINA. 



409 



a. Florets connected by a web {in P. 

 iiemoralis sometimes wanting). Sp. 

 3-8. 



b. Florets unconnected. Sp. 9, 10. 

 ii. Root not creeping. 



a. Brancbes of Panicle semiverticUlate. 

 Sp. 11-16. 



b. Branches solitary or in pairs. 



* Florets connected by a web. Sp. 

 17-19. 



** Florets unconnected. Sp. 20-24. 



C Panicle tricbotomous ! Glumes nerve- 

 less, scariose! united! Sp. 25. 



A. Panicle one-sided. Culm 2i-edged. 



1 . polynoda. " Pan. erect, ovato-lanceo- 

 late. Fits. 4-5, without a web. Outer Pale 

 5-nerved. Uppermost Joining above middle of 

 stem. Ligule prominent, obtuse, p. 6, 7. 

 Dry stony." — Bab. 



2. compressa. Pan. spreading when in 

 flower. Flo]-ets 5-7, slightly webbed. Outer 

 Tale o-nerved. Uppermost Joining at about 

 middle of stem. Ligule short, obtuse, p. 7- 

 JDnj. 



yS. subcompressa. Outer Pale 5-nerved. 



y. Inngeana, Rchb. Habit of trivialis. 



S. Panicle equal. Culm terete. 



i. Boot creeping. 



a. Florets connected by a web . 



3. pratensis. Pan. diffuse: branches semi- 

 verticillate, rough. Spicules ovate, 3-5-flow- 

 ered. Outer Pale with 5 prominent nerves. 

 Culm and Sheaths smooth. Ligule truncate. 

 p. 5, 6. Grass. Not in Sic. 



4. Nymanm. " Pan. spreading when in 

 flower : branches rough. Spicules oval, 2- 

 3 -flowered. Glumes and Pales exquisitely 

 nerved. Keel aculeato-scabrous. L. narrow, 

 smooth on margin : those of the barren shoots 

 distich. Sheaths compressed, with asperi- 

 ties pointing upwards. Upper Ligule short, 

 truncate. Root somewhat creeping, p. 6, 7- 

 Sandy Mils. Nicolosi. Between pratensis 

 and trivialis." — Guss. 



5. nernoralis. Pan. spreading : branches 

 verticiUate, rough. Spicules eUiptico-lanceo- 

 late. Fits. 2-5. Marginal Nerves hairy at 

 base. Nerves of outer Pale not very distmct. 

 Upper Knot about or above middle of stem. 

 Culm and Sheaths smooth. Ligule very short. 

 Root somewhat creeping, p. 6, 7. Woods. 

 Koch considers the form having a lax nodding 



panicle and i-fowered spicules as the type ; 

 and mentions the fullowing varieties : — 

 j8. firmula. Cnlm nearly erect. Panicle 



spreading. Florets free. 

 ■y. coarctata. Culm rigid, erect. Pan. 

 contracted. Fits, webbed. 



5 . pratensis, Lk'E rs . Culm and Sheaths rough . 



6. glauca. Glaucous. Difl'ers from P. ci^sia 

 in having the culm leafy above the middle. 



f. montana. Spicules few and large, not 

 above 2 or 3 on a branch of the panicle. 



To these we may add 

 7]. Parnellii, Bab. Upper Sheaths usually 

 longer than L. 



6. Salfourii. Panicle rather spreading : 

 branches verticiUate. Spicides ovate. Fits. 

 3 or 4, webbed. Outer Pale Tvith 5 nerves ; 

 the marginal nerves hairy. Upper Knot at not 

 more than one-third of height of culm. Li- 

 gule prominent, obtuse, p. 7- TopjS of moun- 

 tains. Sc. and n. E. — Bab. 



7. miliacea. "Pan. effuse. Pales quite 

 smooth, truncato-denticulate. L. narrow, short, 

 smooth. Ligide rather long, obtuse, p. Hills. 

 Brian9on, Sw. Differs from P. nemoraUs in 

 the truncato-dejiticulate summit of the outer 

 pale" — KuNTH. 



8. cenisia. Pan. oblong : branches semi- 

 verticUlate, nearly smooth, iiliform, bearing- 

 flowers almost from the base. Spicules ovato- 

 lanceolate, 3-5-flowered. Pale ciliate, silky. 

 Lower Ligule truncate ; upper oblong, p. 

 7, 8. Very high. Pyi-. Alps. 



b. Florets unco?inected by a v;eb-. 



9. montana. " Pan. erect, close, slender. 

 Spicules few, lanceolato-ovate, 2-3-flowered. 

 Outer Pale with 5 nerves, of which the dorsal 

 and marginal are hairy. Upper Sheath not 

 longer than its L. Ligule prominent, obtuse. 

 Uppermost Knot about the middle of the stem. 

 p. 6. Ben Lawers." — Bab. 



10. setnensis. " Pan. equal, narrow, 

 somewhat secund. Spicules lanceolate, 2-3- 

 flowered. Glumes and Pales lanceolate, acute, 

 5 -nerved. L. compressed, short. Calm and 

 sheaths nearly smooth. Ligule short, acute. 

 p. 6, 7. Sandy looods. iEtna." — Guss. 



ii. Pi,oot not creeping, the new shoots in the 

 perennial species coming up close to the old. 



a. Branches of Panicle semiverticillate. 



11. sudetica. Pan. oblong, diffuse. Spi- 



3 G 



