402 



871. ARUNDO. 



ceolate, acute. Hairs about half as long as 

 floret. Awn dorsal and tmsted, or wanting. 

 L. flat, acuminate. Ligule large, acute, p. 

 7, 8. Mountain pastures. Bex. Mr. Kip- 

 pist finds that the inner Pale is wanting or 

 very minute. 



S. With rudiment of a second floret. Long 

 Hairs from the base of the Pale. 



6. stricta. Pan. erect. Glumes ovate, sub- 

 acute, hardly exceeding pale. Awn straight 

 from below middle of Pale, which it hardly ex- 

 ceeds. Plairs shorter than floret. Rudiment 

 a stalked tuft of hairs. L. somewhat involute. 

 Ligule very short, truncate, p. 6, 7- Moist 

 meadows. Rescobie near Porfar. Delamere 

 Forest. Irel. n. e. G. 



7. montana. Pan. spreading. Glumes 

 acute, about as long as pale. Awn from near 

 the base, geniculate and twisted, exceeding 

 glume. Hairs not exceeding floret. Rudiment 

 a haiiy stalk. Ligule long, acute, lacerate, p. 

 7, 8. IFoodg hills. Pr. G. Sw. 



8. sylvatica. Pan. spreading. Glumes 

 acute, rather exceeding florets. Dorsal Awn 

 geniculate, exceeding glume. Hairs very short ; 

 about one fourth of pale. Rudiment a hairy 

 stalk. Ligule short, rounded, p. 7, 8. Woody 

 hills. Pr. G. Sw. n. It. 



C. Calyx with 2 flowers, or 1 and the rudi- 

 ments of a second. Long hairs from a ring 

 above the base of pale. 



9. Plinii. Pan. ei'ect. Upper part of 

 Pale smooth, and tapering into a seta, which 

 exceeds glume. Rudiment a smooth stalk, 

 with a scale or two at the end. p. 9. Bitches 

 and banks. Rome. Florence. Bologna. Has 

 sometimes 2 florets, when it has been called 

 biflora a^id mauritanica. 



D. Calyx ^-^-flowered. 



10. X3onax. Glumes nearly equal ; inner 

 as long as floret. Outer Pale setigerous. Hairs 

 from near base, falling short of outer pale. Li- 

 gule a narrow membrane fringed with short 

 hairs, p. 9, 10. Coasts of Mdt. Lago di 

 Garda. 



11. altissima. Cal. 3-5 -flowered. Glumes 

 unequal ; the outer haK as long as floret. Li- 

 gule composed of long haifs. p. s. Fr. — 

 Benth. 



872. AMMOPHILA. 

 1. arenaria. Glumes lanceolate, acute. 



Hairs one-fourth as long as pale. Rudiment 

 an acute, hairy stalk. L. involute, p. 7, 8. 

 Sandy shores. 



2. baltica. Glumes ovato -lanceolate, very 

 acute. Hairs half as long as pale. Rudiment 

 generally wanting. L. involute, p. 7. Sandy 

 shores of Baltic. 



873. PHRAGMITES. 



1. communis. Pan. lax. Cal. 4-7 -flow- 

 ered, p. 8, 9. Wet, and still water. Spi- 

 cules purple. 



2. isiacus. " Pan. veiy large, oblong. 

 Cal. 2-5 -flowered. Fits, awnless, far exceed- 

 ing glumes. L. and Sheaths quite smooth, 

 glaucous, p. 9." — KuNTH. Marshes between 

 Sargans and Ragatz in Sw. Spicules yel- 

 lowish-green, afterwards reddish. 



874. AMPELODESMOS. 



1. tenax. Cal. 2-flowered. L. involuto- 

 subulate. p. 5-7. Dry calc. hills. It. Sic. 



Ti-ibelX. CHLOBIBEM 

 875. CYNODON. 



1. Dactylon. Spikes 3-5, digitate. Pale 

 smooth, subciliate, longer than glume. Rudi- 

 ment setiform. p. 7, 8. Bry sandy. Corn- 

 wall. Common further south. 



876. DACTYLOCTENIUM. 



1. segyptiacum. Spikes 4-5. Rachis 

 smooth. Inner Glume mucronate. L. fringed 

 at base. Culm ascending, a. 9-11. Sandy. 

 Paterno in Sic. 



877. BECKMANNIA. 



1. eruciformis. Erect. L. flat. LigiJe 

 long. p. 5. Wet. Ostia. Albano. Tusc. Sil. 



878. LEPTOCHLOA. 



1. arabica. Glumes equal. Fits, stalked, 

 awnless. a. Sandy shores. Giulia Nova and 

 Pescara. K. of Nap. 



879. SPARTINA. 



1. stricta. Culm veiy smooth. Spikes 

 2-4. Glumes do^Tiy. Keel unarmed. L. con- 



