OF ARTS AND SCIENCES : JANUARY 26, 1870. 173 



at length mostly revolute. Cyme ample, sometimes rather fastigiate, 

 sometimes very open ; the bracts at each node short and connate into a 

 ealyculus, which is white-woolly inside. Involucres either glabrous 

 or the wool early deciduous, varying from oblong to cyathiform-cam- 

 panulate, and from a line and a quarter to nearly two lines in length ; 

 the flowers of about the same length. 



41. E. loxchophtllum, n. sp. Caespitosum ? elatius ; caulibus basi 

 vix lignescente breviter foliatis ; foliis lanceolatis seu lato-linearibus in 

 petiolum gracilem attenuatis subtus albo-lanatis ; pedunculo elongato in 

 cymam repitite trichotomam paniculoeforinem soluto ; bracteis inferi- 

 oribus filiformibus, summis subulatis ; perigonii albi segmentis obovatis 

 retusis. — On the Rio Blanco, interior of New Mexico ? Newberry in 

 Macomb's Expedition : herb. Torr. Leaves not much crowded on the 

 base of the single stem seen, about three inches long, and tapering into 

 a petiole of an inch or more in •length, obtuse, rather thin, flat ; the 

 somewhat scape-like peduncle with the loose cyme a foot in length, the 

 primary divisions four inches long. Involucres fewer-flowered than in 

 the preceding, the flowers of about the same size. 



* * Annua, transmontana, caulibus laxe ramosis inferne tantum 

 foliosis. Perigonia rosea, intus glaberrima, segmentis consimilibus 

 fere aequalibus. Bracteolas vix barbellatae. 



42. E. truncatuji, n. sp. Laxe floccoso-lanatum, pedale ; foliis 

 plerisque ad nodos inferiores subfasciculatis spathulatis oblongisve in 

 petiolem gracilem attenuatis ; pedunculis elongatis nudis ; cyma laxa 

 2-3-chotoma ex involucris pauciusculis multifloris oblongo-campanulatis 

 ore truncato, alaribus sessilibus ; bracteis minimis ; perigonii segmentis 

 obovatis. — California, on the summit of the eastern peak of Monte 

 Diablo, Brewer. Leaves an inch and a half long, including the petiole. 

 Involucre two lines long, thin and scarious between the broad greenish 

 ribs, which are connected to the very top. Perigonium a line long. 



* * * Annua, cismontana, caulibus elatis strictis sursum longe 

 foliatis. Perigonia alba, fundo lana longa tenuissima arachnoidea 

 instructo, segmentis disparibus, exterioribus multo majoribus. 

 Bracteolaa tenuiter plumosae. Cymae decomposita? floribundae. 



43. E. axxdum, Nutt., Benth. in DC. Albo-lanatum ; foliis oblon- 

 gis basi attenuatis plerisque petiolatis ; involucris niveo-lanatis intus 

 glabris breviter 5-dentatis ; perigonii segmentis exterioribus late 

 obovatis, interioribus oblongis. E. Lindheimerianum, Scheele in 



