. Elementary botany [microform]. Botany; Botanique. 120 COMPOSlTiE. nil rrrT~""i l\. fl i m convex; the persistent chaff embracing the 4-8ided and laterally compressed smooth aohenos, which are neither winged nor margined. Pappus very deciduous, of 2 thin cliaffy scales on the principal angles, and sometimes 2 or more small intermediate scales.—Coarse and stout herbs, with solitary or corymbed heads, and yellow rays; flowering toward autuum. (Named from ^hoc, the mn, and avOog, a Jlower.) § 1. Perennials; receptacle convex or at length low-conical; lower leaves usually opposite. * In
. Elementary botany [microform]. Botany; Botanique. 120 COMPOSlTiE. nil rrrT~""i l\. fl i m convex; the persistent chaff embracing the 4-8ided and laterally compressed smooth aohenos, which are neither winged nor margined. Pappus very deciduous, of 2 thin cliaffy scales on the principal angles, and sometimes 2 or more small intermediate scales.—Coarse and stout herbs, with solitary or corymbed heads, and yellow rays; flowering toward autuum. (Named from ^hoc, the mn, and avOog, a Jlower.) § 1. Perennials; receptacle convex or at length low-conical; lower leaves usually opposite. * Involucre loose, the scales acuminate or elongated orfoliaceous ; disk yellow {anthers dark). ^:Leaves narrow, chiefly alternate, not Z-nerved, scabrous both sides; heads rather sttmll; scales loose, attenuate. 1. H. giganteus, L. Stem hairy or rough (3-10° high), branched above ; leaves lanceolate, pointed, minutely serrate or nearly entire, green both sides, narrowed and ciliate at base, but nearly sessile'; scales long, linear-lanceolate, pointed, hairy or strongly ciUate.— Low thickets and swamps ; common. +1 Leaves all or most of them opposite, 3-nerved. I Heads larger; rays usually over 10; spreading by creeping rootstocks. \\ Leaves sessile or subsessile to short-petiolate, serrulate or entire. 2. H. divaricatUS, L. Stem simple or forked and corymbed at the top (1-4° high), smooth below; leaves all opposite and divaricate, ovate-lanceolate, S-nervcd from the rounded or truncate sessile base tapering gradually to a sharp point (3-6' long), serrate, thickish, rough both sides; scales narrowly lanceolate, attenuate, ciliate equalling the disk ; rays and barrens ; Disk 6" wide ; rays 1' long, WW Leaves longer-petiolate, thinnish or soft, coarsely serrate, commonly broad ; scales loose, hirsute-ciliate. 3. H. decapetalus, L. Stem branching (2-6° high), smooth below; leaves smooth or roughish, ovate, pointed, abruptly con- tracted into margin
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisher, booksubjectbotany
