PERUVIAN REGIONS. 



171 



Cynodon (compare No. 1 Taheiti to Tongataboo, New Zealand, Hindostan, the Thebaid, 

 and Brazil). Growing on the inland slope of the sea-beach j and apparently the same 

 species, on the summit of the Amancaes mountain-ridge. 



Leptochloa (No. 1). In the environs of Lima. 



Eragrostis (No. 27) ; like E. pilosa, but larger. On the exsiccated portions of the river- 

 bed of the Rimac, towards its mouth. 



(Brizopyrum) thalassicum, (No. 3 ; compare No. 1 Oregon, California, our Atlantic coast, 

 and Patagonia) ; Poa of Kunth ; and a congener of our Uniola spicata. Leaves short, 

 crowded, distichous. Maritime ; being the prevailing plant in the depressed ground 

 back of the sea-beach. 



Rottboella (No. 3). In the environs of Lima. 



Andropogon (No. 33). Eighteen inches high; the spikes terminal, hairy. In the envi- 

 rons of Callao. 



Equisetum (No. 10 ; compare No. 9 Chili). Upright, five to nine feet high. Frequent 



in wet ground among bushes, in the environs of Callao and Lima. 

 (No. 11). Having the habit of E. scirpoides; but eighteen inches long, being 



procumbent with the branches secund. Frequent in the infiltrated ground. 

 Azolla (bis No. 2 California, Brazil, North Patagonia, and Chili). Aquatic; abounding 



in the environs of Callao. 

 Acrostichum (No. 18). One to five feet high, with the habit of Gymnogramma ; frond 



with the segments three-parted, linear-lanceolate, whitish beneath. Frequent in the 



infiltrated ground in the environs of Callao and Lima. 

 Adiantum (No. 30). On the " Amancaes mountain," Brackenridge. 

 (Thelypteris No. 17 ; compare No. 16 Chili); near Aspidium thelypteris. Seen only in 



artificial localities ; on the overhanging banks of deeply-cut irrigating canals, around 



Lima. 



Hepaticae. Extremely rare; chiefly confined to the artificial banks of deeply-cut irriga- 

 ting canals. 



Musci. Extremely rare ; and like the Hepaticse, chiefly confined to the overhanging 

 banks of deeply-cut irrigating canals ; in a few instances, met with in situations 

 undisturbed by art. 



(Panicum?). Paspalum-like ; six to twelve spikes, alternating in a raceme six inches 

 long, but at the summit aggregated ; the florets pointed. In the environs of 

 Callao. 



Chloris radiata ?. On the exsiccated portions of the river-bed of the Riraac, below 

 Lima. 



(Eragrostis) ciliaris, (bis Zanzibar). On tlie exsiccated portions of the river-bed of the 



Rimac, below Lima. 

 Bambusa ?. A species of bamboo, planted in a garden at Lima. 



(Imperata ? ; compare Pappophorum? of the Samoan and Feejee Islands, and East Indies); 



Saccharum of authors. Small, slender, three to five feet high. On the exsiccated 



portions of the river-bed of the Rimac at Lima. 

 Sorghum (Ilalepense ? ; compare No. 1 East Indies, Dekkan, and the Thebaid). Having 



the habit of Panicum ; the florets small. Growing spontaneously along the irrigating 



canals in the vicinity of Callao. 



