appressed

Corymbosely much branched; heads small, sessile, in little clusters crowded in flat-topped corymbs; the closely appressed involucral scales somewhat glutinous; receptacle fimbrillate; rays 6–20, short, more numerous than the disk-flowers; leaves narrow, entire, sessile.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Erect culms and appressed leaves more slender than in the preceding; panicle exserted, very simple and narrow; spikelets smaller, the lower glumes acuminate, little shorter than the cuspidate upper one.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Scales of the hemispherical involucre imbricated somewhat in 2 rows, appressed, with narrow membranaceous margins.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Style 3-cleft; spikelets narrow, terete or nearly so, few–many-flowered, the scales closely appressed and the broad wings of the jointed rhachis enclosing the triangular achene.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Pappus less distinctly double, the inner of bristles not thickened at top, the outer shorter; scales well imbricated, appressed, without herbaceous tips; rays violet; achenes narrow, villous; leaves numerous, rigid, small, linear, 1-nerved and veinless.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray