HORTUS GRAMINEUS WOBURNENSIS. 46^ 



late, nearly equal ; cali/x 2-valved, 2-flowered ; inferior^ore^s 

 masculine, superior bisexual ; glumes of the corolla 2, lanceo- 

 late, acute, awnless ; germen marginate, spike compound. 

 Linn. Syst. Veg. ii. 253. 

 CENCHRUS tribuloides, ami. caltrop serpent grass, nat, of Vir- 

 ginia and the sea coasts of Florida. Michaux Fl. Bor. 

 Amer. i. 61. 

 echinatus, ann. hedgehog serpent-grass, nat. Arabia. Elymus 



caput Medusae, var. Frosk. p. 25. 

 pungens, arm. sharp-pointed serpent-grass, nat. of the hot half- 

 inundated plains of Peru, near Guyaquil. Linn. Syst. Veg. 



ii. 254. Humb. et Bonpl. Nov. Gener. et Spec. i. 115. 

 rufescens, ann. brown serpent-grass, nat. of Mascar, growing in 



sands. Poiret. Enc. Meth. v. 51. 

 ramosissimus, ann. branching serpent-grass, nat. of Egypt. 



Poiret. Enc. Meth. v. 51. 

 parviflorus, ann. small flowered serpent-grass, nat. of Porto- 

 Rico. Linn. Syst. Veg. ii. 254. 

 setigerus, ann. bristly serpent-grass, nat. Arabia. Frosk. 

 geniculatus, ann. knee-jointed serpent-grass, nat. of the Cape of 



Good Hope. Panicum geniculatum, Flo. Cap. Panicura 



hordeiforme. Flo. Jap. Linn. Syst. Veg. ii. 255. 

 muricatus, ann. caltrop-like serpent-grass, nat. of the East Indies. 



Panicum squarrosum, Retz, Obs. iv. 15. v. t, 1. 

 purpurescens, ann. purple serpent-grass, nat. of Japan. Thunb. 



Flo. Jap. p. 46. Panicum hordeiforme var. 

 hordeiformis, ann. barley-like serpent-grass, nat. of the Cape of 



Good Hope. Panicura hordeiforme, Willd. H. berol. 

 ovatus, ann. oval-spiked serpent-grass, nat. of the Cape of Good 



Hope. Sonnerat, Lam. Illustr. t. 838. f. 2. 

 tamentosus, ann. woolly serpent-grass, nat. of the Cape of Good 



Hope. Linn. Syst. ii. 256. 

 frutescens, ann. shrubby serpent-grass, nat. of Achaia and Mes- 

 sina, on the sea coast. 

 Australis, ann. Botany Bay serpent-grass, nat. of New Holland. 



R. Brown. Prod. i. 196. 

 calyculatus, ann. glomerate serpent-grass, nat. of the Friendly 



Isles. 

 inflexus, ann. inflex branched serpent-grass, nat. of Guiana. 



Poiret. Enc. Meth. t. vi. 50. 

 myssuroides, ann. mouse-tail serpent-grass, nat. of the shores of 



