184 



DISTRIBUTION OF PLANTS. 



Pluchea ? (No. 8) ; leaves obovate, two inches by one, denticulate; calyx-scales triserial. 



In the environs of Obrajillo. 

 G-naphalium (compare No. 50 Lower Peru). Annual, a foot high, lanate ; leaves linear- 

 lanceolate. In the environs of Obrajillo. 

 (No. 53) ; having the habit of G. purpureum ; the calyx-scales blackish. In the 



environs of Obrajillo; and perhaps the same species, at Baiios. 

 (No. 54). One to two feet high; leaves decurrent, their upper surface smooth. 



In the environs of Obrajillo. 

 (No. 55). Procumbent, branching, rising an inch above the ground; the flowers 



crowded among the leaves. In the environs of Obrajillo. 

 Senecio (No. 36). Three to four feet high ; leaves lyrately pinnatisect, the segments 



linear. In the lower portion of the region, along the ascent to Obrajillo. 

 — (No 37) ; smooth. The stem three inches high, or sometimes wanting ; large 



yellow floret-rays. In the upper portion of the region, along the ascent to Culuay. 

 Senecioid (No. 1); having the habit of Sonchus. Herbaceous, decumbent ; the stem 



and under surface of the leaves tomentose ; leaves large and broad, dilated at base, 



amplexicaul, lyrate. In the environs of Obrajillo. 

 (No. 2). SufFruticose ; leaves petioled, broad, dentate, the under surface lanate. 



In the environs of Obrajillo. 

 (No. 3) ; having the habit of some species of Hieracium. Herbaceous, one to 



two feet high; leaves repand, lyrate; the petiole three inches long; about six large 



flowers. In the environs of Obrajillo. 

 (No. 4). Herbaceous, a foot high, tomentose ; leaves amplexicaul, auriculate at 



base, panduriform, undulate. Along the upper margin of the region at Baiios. 

 Tagetes (No. 3). Annual, three to twelve inches high ; flowers inconspicuous ; calyx 



monophyllous, terminating in five to six dentures ; six pappus-rays. Abounding in the 



environs of Obrajillo. 



Arnicoid (No. 1). Leaves opposite, ovate, dentate, the under surface white; flowers 

 yellow, the florets very numerous, and numerous floret-rays; calyx-scales in four series; 

 about seven to eight pilose pappus-rays. In the lower portion of the region, along the 

 ascent to Obrajillo. 



Gen. Siegesbeckioid (No. 1). Twelve to eighteen inches high; tomentose; leaves dissected; 



calyx-scales foliaceous, broad, obtuse, biserial ? ; floret-rays short, yellow; pappus none. 



In the environs of Obrajillo. 

 Polyumia? (bis No. 2 Yaso in Lower Peru). In the upper portion of the region, along 



the ascent to Culuay. 



Zinnia paueiflora, (No. 1); see Lam. 685, f. 1. Annual, six to ten inches high. Abounding 



in the lower portion of the region, along the ascent to Obrajillo. 

 Heliopsis ? (No. 3) ; more hairy, and the leaves broader than in the Lima species. In 



the environs of Obrajillo. 

 ? (No. 4) ; perhaps distinct; the flowers very large. In the upper portion of the 



region, along the ascent to Culuay Either this, or No. 3, observed also at Banos. 



Sonchus oleraceus ? (compare Taheiti, New Zealand, Auckland Island, Western Oregon, 

 our Atlantic States, North Patagonia, and No. 2 Europe). Growing spontaneously 

 around Obrajillo, but apparently introduced. 



