HORTUS GRAMINEUS WOBURXEXSIS. 45 



late, nearly equal ; calyx 2-valved, 2-flowered ; inferior florets 

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

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

 Linn. Syst. Veg. ii. 253. 



CENCHRUS tribuloides, ann. 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, ann. 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. Panicum 

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



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

 Indies. Panicum squarrosurri, 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. Panicum hordeiforme, Wild. H. berol. 



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

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



foment osus, 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. 



infiexus, 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 



