cymosely 

 peduncles: involurral scales 

 20. 4 lines long, shorter 



iha 



,n the disk flower 



s; ravs'man' 



V, fellow. 



oblor 



le too' 





:s long 



; disk flow 



ers many ; p; 



appus of 1 



ravof 



2 1on^ 



ver 



y stout 



below, of 



disk rather manv awii< 



.ofv. 



Irving 



son 



ne of ^ 



.vhich are 



slightly flat 



tened anr 



1 hyaline. : 



Cai 





erra Madr 



e Mts.;Chih 



uahua, M 





ept., r 



the 



Troni< 



Ml Life Zone. 











Pectis 



i papoosa V 



rar. sessilis n, 



var 









Akene 



?s destitute 



^ of pappus ; 



head's ses; 



sile. 



Socorn 



:vie 



ixico a 



nd iie-r H 



illsbora. I. 



E. Diehl. 



Aug. 



. 1903, 



the 

 rropjcal Life Zone. 



Porcphyllum simplex n. sp. 



Annual, erect, stems strict and simple below, glabrous, 

 striate; leaves many, thin, alternate, entire, acntish, oblong- 

 hneav wUh a runrnte base and filiform petiole about 6 lines 

 long, the whole 2-3 inches long; glands large, 3-4 on each side 

 o{ the leaf near the edge ; all the upper axils have single leafy 

 reduncles bearing mosUy a single black-purple head 6 lines 

 -ong, the peduncle widely spreading and 2-4 inches long, 

 ■;Drermovn peduncles inclined to be cvmose and leafless for 1-2 

 mches below the head, slender; heads with 3-nerved, broadly 

 bnear. ocnte scales with many black dots on each side of the 

 nenx: fJov/ers nearly black, barely surpassing the scales, 

 lohp^ -ibont a fourth of the tube; pappus taw^ny as long as the 

 corolla ; akenes narrow and tapering above, about as long as 

 the pappus. This is apparently near to P. coloratum. Guaya- 

 nopa Canon. Sierra Madre Mts., Chihuahua, Mex., Sept., 1903, 

 m the Troptcal Life Zone. 



Coreopsis paludosus n. sp. 



Sect. Eucoreopsis. Annual, erect, paniculately branched 

 and branches racemose from the base, striate, smooth, stems 

 and leaves rather succulent; root leaves 6-9 inches lone, long- 

 pet oled from an enlarged base, pinnatelv divided with long 



T^'^^jf ^^^ ^^^^^ ^^^^^y ^v'^h o"e or two others 



nLlr ir ■?• ""o ^^-^ ,"PP^^ ^'^^' terminal lobes broader and 

 linear-elliptic. 2-3 inches long, entire; stem leaves similar, but 

 horter. petioled often entire throughout, alternate; inter- 

 nodes long: heads on long peduncles, 6-9 1 nes wide exclusive 



