TRIANDRIA— DIGYNIA. Cynodon. 95 



A. coarctata, Ehrh. Calam. 133, referred by Schraderto the purple 

 variety, or rather state, of our alba, appears extremely different 

 in its narrow involute leaves, trailing radical shoots, and slender 

 loose panicle. I hare seen nothing like it in England. Ehrhart's 

 specimen in his Calamaria precisely accords with one sent by 

 Dr. Roth as his A. alpina; but it is a real Agrostis, neither A. al- 

 pina, nor A. rupestris of Willdenow j see Trichodium n. 2 & 3 

 of Schrader ; about which I find various errors, not concerning 

 the British Flora. 



36. CYNODON. Dog's-tooth-grass. 



" Richard in Pers. Syn. v. 1. 85." Br. Pr. 187. Nutt. Gen. Amer. 



56. Beauv. Agr.37. t.9.f. 1. 

 Digitaria. Schreb. Germ. v. I. 165. 



Cat. of 2 nearly equal, lanceolate, acute, keeled, awnless, 

 spreading valves, containing a single floret. Cor. of two 

 unequal, keeled, compressed, awnless valves; the outer- 

 most much the broadest, clasping the other. Nectary of 

 2 minute scales. Filam. rather longer than the corolla. 

 Anth. cloven at each end. Germ, ovate. Styles distinct. 

 Stigm. feathery. Seed ovate, coated with the hardened 

 corolla. 



Schrader and Brown have observed occasionally the rudi- 

 ment of a second flower, like a small bristle. 



The stems are prostrate and creeping, leafy, with upright 

 flowering-branches. Fl. spiked, unilateral, somewhat al- 

 ternate, on the flat side of a linear triangular receptacle, 

 several of which are collected at the top of the branch. 

 The recept. is really neither jointed nor scrobiculated, so 

 that this genus cannot be referred to the spiked grasses, 

 which constitute our third section. 



1. C. Dactylon. Creeping Dog's-tooth-grass. 

 Spikes four or five, crowded together. Corolla smooth. 



C. Dactylon. Br. Pr. 187. 



Panicum Dactylon. Linn. Sp. PI. 85. Willd. v. 1. 342. Fl. Br. 67. 



Engl. Bot. v. 12. £.850. Fl. Grcec.v. 1.45. t.60. Knapp t. 13. 



Dicks. Dr. PI. 53. H. Sicc.fasc 11.1. 

 Digitaria stolonifera. Schrad. Germ. v. 1. 165. 



D. n. 1527. Hall. Hist. v. 2. 244. 



Agrostis linearis. Retz. Obs.fasc. 4. 19. Willd. i\ 1.375. Ascer- 

 tained by Mr. Lambert. 



Graraen repens, cum panicula graminis mannas. Raii Syn. 399. 



G. Dactylon, folio arundinaceo, majus et minus. Bauh. Theatr. 

 1 1 1—1 13./,/. Moris, v. 3. 184. n. 3, 4. sect. 8. t. 3./. 4. 



