38 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH SER. 
P. distichum L. Amoen. Acad. V. 391 (1760); Rob. (1), 
123.—JamEs Isu.: Orchilla Bay, Baur. Further distr. tropical 
and subtropical regions. 
P. penicillatum Hook. f. (3), 171; Rob. (1), 124.— 
CHARLES IsL.: Darwin. Endemic. 
P. scrobiculatum L. Mant. I. 29 (1767); Rob. (1), 124.— 
CHATHAM Ist.: Chierchia. Further distr. general in tropics 
of old world. 
P. sp. Rob. (1), 124.—INDEFATIGABLE IsL.: north side, 
Snodgrass and Heller. Probably a new species, acc. to Robin- 
son, l. ¢. 
Pennisetum Rich. 
P. exalatum (Anderss.) Hook. f. & Jacks. Ind. Kew. I. 112 
(1893). Amphochaeta exalata Anderss. (1), 137, (2), 45, t. 1, 
f.2. P. pauperum Nees acc. to Steud. Syn. 102 (1855) ; Rob. 
(1), 119.—ALBeMarte IsL.: Cowley Bay, Andersson; Iguana 
Cove, occasional in dense patches 6-7 ft. high on the sides of the 
cliffs above the cove (no. 1323); Tagus Cove, a considerable 
area is covered with a dense growth of this grass around the 
top of the mountain, 3850-4000 ft., (no. 1324). The dried 
culms, collected at Elizabeth Bay and ascribed to Chusquea sp. 
by Robinson, (1), 119, no doubt belong to this species. Nar- 
BOROUGH IsL.: Mr. Rk. H. Beck reported a heavy growth of 
grass around the top of this island. From his description it is 
probably of this species. Endemic. 
Setaria Beauv. 
S. floriana Anderss. (1), 138, (2), 46; Rob. (1), 124.— 
CHARLES IsL.: Andersson. Endemic. 
S. setosa (Sw.) Beauv. Agrost. 51 (1812). Panicum seto- 
sum Sw. Prodr. 22 (1788). S. setosa Beauv. 1. c.; Rob. (1), 
124.—ALBEMARLE IsL.: Elizabeth Bay, Snodgrass and Heller ; 
Iguana Cove, (no. 1091); Tagus Cove, abundant in tufaceous 
soil around the base of the mountain (no. 1090); Villamil, 
occasional in bunches on the lower parts (no. 1092). Bar- 
RINGTON IsL.: Snodgrass and Heller. CHarves Ist.: abund- 
ant around 1750 ft. (nos. 1293-1294). CHatHaAm Ist.: 
