AND GENERA OF PLANTS. 331 



nearly equal, and similar in the rays. — Perennial, dwarf herbs, of an inele- 

 gant aspect, with alternate, nearly entire, or sharply serrated, spathulate, 

 rigid, coriaceous leaves; capituli mostly sessile, terminal, and clustered in 

 the axills of the leaves, rarely fastigiate. Flowers wholly yellow, and rather 

 large, as in Chrysopsis. Allied to Solidago, particularly to aS". confertifiora; 

 and aS. spathulata, of Mexico, appears to be a genuine species. From Aplo- 

 pappus it differs much in habit, involucrum, achenium, &c. — (The name is 

 given in allusion to the similarity of the pappus in the ray and disk.) 



Homopappus *paniculatus; smooth, leaves spathulate-lanceolate, acute, cau- 

 line amplexicaule, rarely here and there subserrulate; branches subfastigiate ; 

 capituli in subterminal clusters, sessile; involucrum obconic; rays eight to ten, 

 about twice the length of the disk; achenium slightly hirsute at the summit; 



scales of the involucrum ovate-oblong, obtuse. 



Hab. Plains of the Oregon, not fax- from Walla-Walla, particularly the prairie called the Grand 

 Ronde. About a foot high, growing in considerable quantities in wet places. Leaves three to 

 four inches long, by half an inch to an inch wide, the radical much attenuated. Florets twenty- 

 five or tiiirty, the pappus about their length; scales of the involucrum closely imbricated in 

 three or four series, the scales rigid and membranaceous on the margins, with green, foliaceous, 

 subsquarrose tips. The involucrum almost resembles that of a Fteronia. Pappus brown and 

 rigid; achenium rather long. 



Homopappus * glomeratus; smooth; leaves spathulate-lanceolate, very acute, 

 generally entire, cauline amplexicaule, linear-lanceolate, or oblong; capituli 

 axillary, and clustered towards the summit of the simple stem, or its branches, 

 sessile, roundish and subcylindric, glutinous and squarrose; rays about eight 

 to ten ; achenium very smooth, subcylindric. 



Hab. With the above, to which it is closely allied, but the involucrum is nearly round, and the 

 achenium perfectly smooth, pale and shining, linear and subcylindric, somewhat compressed, and 

 narrowed at each extremity. Sometimes (perhaps when the stem has been injured at the summit) 

 it branches fastigiately, but it usually presents an interrupted spike, with leaves interposed between 

 the clusters, which are about three together. 



'Homopappus ^argutus; smooth; leaves spathulate-lanceolate, subacuminate, 

 sharply serrate, cauline amplexicaule; capituli clustered, sessile, axillary and 

 terminal; scales of the glutinous involucrum subsquarrose, lanceolate, acute; 

 rays ten to twelve; achenium smooth. 



