HORTUS GRAMINEUS WOBURNENSIS. 81 



PANICUM pi/gtnceitm, ami. dwarf. Brown Prodr. 



minulum, ami. minute, ibid. 



bicolor, arm. two-coloured, ibid. 



uncinulatum, ami. hook-husked, ibid. 



effiisum, arm. scattered-panicled, ibid, 



decompositum, arm. decomposed-panicled, ibid. 



#*** Spikes alternate or crowded, flowers alternate. 



semialatum, arm. half-winged, ibid. 



***** Spikes bundled, subdigitate, flowers awnless. 



parviflorum, aim. small-flowered, ibid. 



striatum, arm. striated, ibid. 



radiatum, ami. rayed, ibid. 



divaricatissirrmrn, arm. ibid. 



Brownii, arm. Brown's, nat. N. HoU. R. S. Linn. Sys. Veg. i. 

 p. 162. P.viliosum, Brown, 1. c. p. 192. 

 ****** Spiked, spikes digitate, bundled, solitary, exterior valve 

 of the husk very small, or none. 



pappo&um, arm. woolly-flowered, ibid, 



termiflorum, arm. fine-flowered, ibid. 



propinquum, arm. allied, ibid, 



gihbosum, ann. gouty, ibid, 

 ******* Exterior flowers masculine, inner feminine, smaller, spike- 

 stalk apex naked, awn-like, aquatic, culms creeping, 



paradoxurn, ann. paradoxical, ibid, 



spinescerts, arm. spiny, ibid. 



New Species discovered by Humboldt and Bonpland. 



1. Spikes solitary, spikets solitary, two-rowed. 

 rottboeUuides , per. hard-grass-like, nat. S. Amer. 



2. Spikes solitary, spikets in twos, flowering on one side. 

 mor lost achy um, per. single, nat. S. Amer. 



3. Spikes verticillate, bundled, or panicled, much digitated, 



or fingered. 

 ascendens, per. ascending, nat, S, Amer. 



4. Panicled, spikets conglomerate. 

 decolor ans, per. various-coloured, nat. S. Amer, 



5. Spikets of the panicle spreading, or scattered. 

 divergens, per. diverging, nat, S. Amer. 

 olyroides, per. amel-corn-like, nat. S. Amer. 

 aturense, per. blackish, nat, S. Amer. 



glaucescens, per. glaucous, nat. S, Amer. Humb, et Bonpl. Nov. 

 Gener. et Spec. i. p. 104. . 



G 



