appressed ; Howers white or pink ; rays shortly acuminate, in 

 one series, 1 line wide, linear, 6 lines long, over 30; disk flow- 

 ers rosin-colored at tip and with some colored nerves, tips 

 roughened as if punctate; pappus a very short crown of very 

 short squamellae ; seeds flat, smooth, oblong-oval, nerves 2 

 and thick. Open woods. Soldier Canon, Sierra Madre Mts., 

 Mex.. Sept., 1903, 6500 feet alt., in the Middle Temperate Life 



Erigeron Howard! n. sp. 



Plants with the habit of E. pumilus, 6-12 inches high, but 

 annual, tufted, branched near the base, sparingly so above, 

 erect; leaves all linear, appressed, entire, sessile, 1-nerved, 

 about 1 inch long, obtuse ; stems leafy nearly to the tip, coarse- 

 ly striate; heads 2 lines high, 4 Hues wide, exclusive of the 

 rays ; scales very strigose, stiff, linear about equal and many ; 

 whole plant shortly strigose with ascending hairs which are 

 tapering and rigid from a large and pustulate base; rays very 

 many, narrow, white; flowers narrow, swelled below the 

 middle ; pappus with about 4 thread-like awns and a conspic- 

 uous chaflfy lacerate crown ; akenes 2-nerved, flatfish, sparsely 

 hairy, minute. This is a good Achaetogeron but for the few 

 bristles. Colonia Juarez, Chihuahua, Mex., 6000 feet alt., 

 Sept., 1903. in the Middle Temperate Life Zone. 



Spilanthes palustris n. sp. 



Aquatic, upper stems floating and with rather short inter- 

 nodes and 2-3 pairs of entire, linear-lanceolate, obtuse leaves 

 on short and margined petioles, the whole 2-3 inches long and 

 2-3 lines wide, succulent as well as the stems; flowers pink- 

 purple, daisv-like, on long and stout and erect peduncles ; ravs 

 narrowly oblong, 4 lines long, 1 line wide, 4-striped, 10-12; 

 involucral bracts linear. 4 lines long, green, in one series; 

 bracts of receptacle with hyaline and fimbnate margins; 

 akenes black, linear, without pappus; base of corolln tube 

 vellow-hispid. This has the habit of Polygonum amphibium. 

 Marsh Lake,' Sierra Madre Mts.. Chihuahua. Mex., Sept.. 1903. 

 7000 feet alt., in the Middle Temperate Life Zone. 



Pectis multiflora n. sp. 



Allied to P. Rusbvi and P. Bonplandii. Annual, widely 

 branched and with peduncles 6 inches long, slender, thickened 

 above and subscapiform : branches with few and long inter- 

 nodes; leaves linear-oblanceolate and with short margined 



