122 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Panicum, L. 



P. colonum, L. Syst. ed. 10, 870 (1760) ; Trin. Ic. ii. t, 160 ; Hook, 

 f. (3), 172. Oplismenus colonus, HBK. Nov. Gen. & Sp. i. 108 

 (1815); Anderss. (1), 136, & (2), 45. — Charles Isl. : Darwin; in 

 somewhat swampy places, middle region, Andersson. Further distrib. 

 general in trop. regions. 



P. fasciculatdm, Sw. Prodr. 22 (1788), & Fl. Ind. Occ. i. 145; 

 Anderss. (1), 135, & (2), 44. — Charles Isl.: Snodgrass & Heller, 

 no. 455 (hb. Gr.). Indefatigable Isl. : Andersson ; northern part, 

 Snodgrass & Heller, no. 649 (hb. Gr.). James Isl. : common on sea-bluff 

 on James Bay, Snodgrass & Heller, no. 392 (hb. Gr.). Further distrib. 

 W. Ind., S. Am. 



P. fluitans, Retz. Obs. iii. 8 (1783) ; Anderss. (1), 136, & (2), 4 5. 

 P. pa*/)afocZes, Pers. Syn. i. 81 (1805). P. paapaloides, auct. — 

 Chatham Isl. : in stagnant pools, middle region, Andersson (hb. Gr.) ; 

 Snodgrass & Heller, no. 557 (hb. Gr.). Hoob Isl. : on the margin of 

 a mud lake, Snodgrass & Heller, no. 746 (hb. Gr.). Further distrib. 

 W. Ind., S. Am., trop. of Old World. 



P. fuscum, Sw. Prodr. 23 (1788); Anderss. (1), 135, & (2), 44; 



Camel (1), 621 ; Rose (1), 138. — Charles Isl. : Andersson • Chierchia. 



Chatham Isl. : Andersson ; A. Agassiz. Further distrib. W. Ind., S. 



Am. Andersson, 11. cc, distinguishes three forms or varieties : vegetius, 



firmius, and pubescens. 



P. hirticaulum, J. & C Presl, Rel. Haenk. i. 308 (1830) ; Kunth, 

 Enum. i. 101 ; P. Mrticaulon, Anderss. (1), 134, & (2), 43 (incl. var. 

 majus, typical, and var. glabrescens, not very clearly marked) ; Rose 

 (1), 138; Rob. & Greeum. (1), 148; a species sometimes reduced to 

 P. ayennense, Lam. — Harrington Isl. : Snodgrass & Heller, no. 

 492 (hb. Gr.). Charles Isl. : Andersson. Chatham Isl.: Andersson ; 

 (hb. Gr.) ; A. Agassiz ; Snodgrass & Heller, no. 548 (hb. Gr.). Gard- 

 ner Isl. : Snodgrass & Heller, no. 648 (hb. Gr.). Hood Isl. : Baur, 

 no. 345 (hb. Gr.); Snodgrass & Heller, no. 722 (hb. Gr.). Indefati- 

 gable Isl. : Andersson (hb. Gr.) ; northern part, Snodgrass & Heller, 

 no. 661 (hb. Gr.). Seymour Isl. : north, Snodgi-ass & Heller, no. 565 

 (hb. Gr.) ; south, Snodgrass & Heller, no. 612 (hb. Gr.). It is note- 

 worthy that this grass, now widely distributed and apparently common in 

 the archipelago, was not noted or collected by Darwin or any of the 

 earlier collectors upon the islands, a fact which strongly suggests recent 

 introduction. Further distrib. Mex. 



