Ol'd. 3.] TRIAKDRIA DIGYNIA. 19 



Mead, and past. If.. 7. Pan. purple, shining, very slender. 



5. A. alba, 17. 11S9. (Marsh B.) Panicle condensed at the base 



of the main divisions ; stalks rough. Calyx-valves lanceolate, 



bristly at the keel. Stem spreading, creeping. Stipula oblong, 



ribbed. 



/3. A. stolonifera, 22. 1532. Pan. more condensed. Stem sometimes 



floating. 

 Fields and marshes. Ij.. 7, 8. Larger. Stip. elongated. Pan. 2—6 in. 



36. CfNODON. Dog's-tooth grass. 



1. C. Dactylon, Panicum Dactylon, 12. 850. (Creeping D.) Spikes 

 four or five, crowded together. Corolla smooth. 

 Sandy shores. 2£. 7, S. Roots widely creeping. Leaves sharp- 

 pointed, hairy. 



37. DIGITARIA. Finger-grass. 



1. D. sanguinalis, Pan. sanguinale, 12. 849. (Hairy Cock's-foot F.) 



Leaves and their sheaths somewhat hairy. Flowers in pairs. 

 Calyx rough at the edge of its largest valve only. 

 Fields, rare. 0.7. Sp. umbellate, linear; common stalk flat, winged. 



2. D. humifusa. Suppl. 2613. (Smooth F.) Leaves and sheaths 



smooth. Florets ovate, downy. 

 Sandy places, Sussex, Norf. and Suff. ©. 7, 8. Smaller than the. 

 last and of a purplish hue. Florets more ovate and more convex. 



38. PA XI CUM. Panick-grass. 



1. P. vcrticillatum, 13.874. (Rough P.) Panicle spiked, cylindrical, 



lobed, with whorled branches ; and several prominent bristles, 

 rough with reversed teeth. Corolla of the perfect floret slightly 

 uneven. 

 Moist fields. ©. 6, 7. Stems smooth, jointed. Cal. heeled. 



2. P. vtride, 13. 875. (Green P.) Panicle spiked, cylindrical, con- 



tinuous, with numerous prominent bristles rough with erect 

 teeth. Corolla of the perfect floret slightly uneven. 

 Sandy fields, rare. ©. 7. Steins erect. Spike nearly uninterrupted. 



3. P. Crus-gdlli, 13. 876. (Loose P.) Panicle erect, branched, 



bristly. Flowers awned, unilateral. Leaves lanceolate, harsh, 

 naked, without stipulas. 

 Moist land. 0. 7. Spikelets generally on one side, condensed. 



39. Al'RA. Hair-grass. 

 * Corolla aimless. 



1. A. cristdta, 9.648. (Crested H.) Panicle spiked. Calyx longer 



than its flower-stalk, shorter than the florets. Glumes all pointed. 

 Dry past. 2/ . 7, 8. Stems erect, 8 in., jointed below. Pan. 

 lanceol., downy. 



2. A. aqueitica, 22. 1557- (Water H.) Panicle spreading Florets 



