158 New Species of South Amebican Plants 



unequal, about .3.5 mm. long and one wide, oblong, slightly 

 mucronate, the middle portion greenish, the margins scarious. 

 Disk-flowers about 8, the akenes linear, 4 mm. long, sparsely- 

 pilose, the pappus very sparse, of sub-plumose bristles with 

 dilated base and very fine short hairs between them, about as 

 long as the akenes. Disk-corollas rose-colored, slightly ex- 

 ceeding their pappus, very little expanded above, the short 

 blunt lobes slightly unequal, the short, blunt style-branches 

 exserted, rough with short, thick hairs. 



Rays about 4, five mm. long, erect, purple, linear, sub-entire. 



"Local on dry banks and rocks below 1,000 feet, near Bonda, 

 July to October. Has a strong mint-like odor." (Herbert 

 H. Smith, Colombia, No. 528 pp.) 



Very near Lehmann's 933, but the disk-corollas of the latter 

 are Httle more than half as long and of different shape, and 

 much shorter than the pappus. Species near P. diffusa H. & A. 



Pectis densa. 



Glabrous, the stems diffusely spreading, the foliage densely 

 matted, the inflorescence abundant. Branches slender, terete, 

 red-purple, the internodes about i cm. long. Leaves, 5 to 15 

 mm. long, i to 2 mm. wide, linear, the base broader and clasping, 

 the summit acute, the margin revolute, setose-serrate, the mid- 

 rib very strong, the glands elongated, brown. Peduncles fili- 

 form, about 2 cm. long, the heads 5 mm. long and half as broad, 

 the involucre turbinate-cylindric, 3 mm. long, the scales 4, 

 oblanceolate, acutish, the summit lightly ciliati. Rays about 

 4, the purple corollas erect, slightly exceeding the disk, slender, 

 oblanceolate, sub-entire. Disk-corollas shorter than their 

 pappus, moderately dilated above, distinctly lobed, the lobes 

 unequal, the styles little exserted. Disk-akenes two-thirds thd 

 length of the corollas, black, stout, oblong, strongly white 

 hispid, the pappus of few strongly serrate bristles, dilated at the 

 base, with short bristly chaff between, slightly exceeding the 

 corollas. 



Species very near P. rosea, but the disk-corollas of different 

 shape and shorter than the pappus, and the habit of the plant 

 and foliage very different. 



"Near Bonda, 250 feet, November 16. Local and rather 

 rare in open lands. An infusion of the- plant used as a febri- 

 fuge." (Herbert H. Smith, Colombia, No. 528, pp.) 



Whether Mr. Smith gave the same number to two species 

 by error, or whether he believed them the same, I do not know. 



