• NSF NEON | Open Data to Understand our Ecosystems
  • Biorepository Data Portal

  • Home
  • Search
    • Sample search
    • Map search
    • Dynamic Species List
    • Taxonomic Explorer
  • Images
    • Image Browser
    • Image Search
  • Datasets
    • Research Datasets and Special Collections
    • Checklist: Research Sites - Invertebrates
    • Checklist: Research Sites - Plants
    • Checklist: Research Sites - Vertebrates
  • Sample Use
    • Sample Use Policy
    • Sample Request
    • Sample Archival Request
    • Data Usage Policy
  • Additional Information
    • Tutorials and Help
    • Biorepository Staff
    • About NEON
    • NEON Data Portal
    • ASU Biocollections
    • About Symbiota
  • Getting Started
Login New Account Sitemap
Asteraceae
Asteraceae image
Max Licher
  • FNA
  • Field Guide
  • Resources
Theodore M. Barkley+, Luc Brouillet, John L. Strother in Flora of North America (vol. 19, 20 and 21)
Annuals, biennials, perennials, subshrubs, shrubs, vines, or trees. Roots usually taproots, sometimes fibrous. Stems usually erect, sometimes prostrate to ascending (underground stems sometimes woody caudices or rhizomes, sometimes fleshy). Leaves usually alternate or opposite, sometimes in basal rosettes, rarely in whorls; rarely stipulate, usually petiolate, sometimes sessile, sometimes with bases decurrent onto stems; blades usually simple (margins sometimes 1-2+ times pinnatifid or palmatifid), rarely compound. Inflorescences indeterminate heads (also called capitula); each head usually comprising a surrounding involucre of phyllaries (involucral bracts), a receptacle, and (1-)5-300+ florets; individual heads sessile or each borne on a peduncle; heads borne singly or in usually determinate, rarely indeterminate, arrays (cymiform, corymbiform, racemiform, spiciform, etc.); involucres sometimes subtended by calyculi (sing. calyculus); phyllaries borne in 1-5(-15+) series proximal to (i.e., outside of or abaxial to) the florets; receptacles usually flat to convex, sometimes conic or columnar, either paleate (bearing paleae or receptacular bracts that individually subtend some or all of the florets) or epaleate (lacking paleae); epaleate receptacles sometimes bristly or hairy or bearing subulate enations among the florets. Florets bisexual, pistillate, functionally staminate, or neuter (also called neutral); sepals highly modifed (instead of ordinary sepals, each ovary usually bears a pappus of bristles, awns, and/or scales, sometimes in combination within a single pappus); petals connate, corollas (3-)5-merous, ± actinomorphic or zygomorphic (one or both kinds in a single head, see descriptions of radiate, discoid, liguliflorous, disciform, and radiant following); stamens (4-)5, alternate with corolla lobes, filaments inserted on corollas, usually distinct, anthers introrse, usually connate and forming tubes around styles (rarely filaments connate and anthers distinct; e.g., Heliantheae, Ambrosiinae); ovaries inferior, 2-carpellate, and 1-locular with 1 basally attached, anatropous ovule; styles 1 in each bisexual, functionally staminate, or pistillate floret; each style usually ringed at base by a nectary, distally 2-branched with stigmatic papillae borne on adaxial face of each branch in 2 separate or contiguous lines or in 1 continuous band (
Desert Research Learning Center, Botany Program

The largest angiosperm family with over 22,000 described species globally, it is also one of the most distinctive in terms of its floral morphology. In North America there are 418 genera and about 2,400 species. Variable growth form, resin canals and/or lactifers often present. Leaves simple or compound, spiral or opposite, exstipulate. Inflorescence one or more heads arranged into various types of secondary inflorescences, each head subtended by phyllaries (bracts), heads of five general types: discoid, disciform, radiate, ligulate, and bilabiate. Flowers perfect, imperfect or sterile, radial or bilateral, of three types: bilabiate, disk, or ray/ligulate. Sepals highly modified, forming pappus composed of 2-many scales or bristles that are variously shaped, often hairy, barbed or plumose. Corolla of 5 connate petals, variously shaped. Stamens 5, usually with connate anthers, plunger pollen presentation, 2 connate carpels, and inferior ovaries with basal placentation. Fruit an achene (cypselae), usually arranged in a multiple fruit.

Species within checklist: Blacktail Deer Creek NEON (BLDE) plants - Northern Rockies (D12) || << 1 - 50 taxa >>
Achillea millefolium
Image of Achillea millefolium
Agoseris glauca
Image of Agoseris glauca
Agoseris parviflora
Images
not available
Anaphalis margaritacea
Image of Anaphalis margaritacea
Antennaria corymbosa
Images
not available
Antennaria dimorpha
Image of Antennaria dimorpha
Antennaria microphylla
Images
not available
Antennaria parvifolia
Image of Antennaria parvifolia
Antennaria racemosa
Images
not available
Antennaria rosea
Image of Antennaria rosea
Antennaria umbrinella
Image of Antennaria umbrinella
Arnica chamissonis
Images
not available
Arnica cordifolia
Image of Arnica cordifolia
Arnica latifolia
Images
not available
Arnica mollis
Image of Arnica mollis
Arnica sororia
Images
not available
Artemisia frigida
Image of Artemisia frigida
Artemisia michauxiana
Images
not available
Artemisia tridentata
Image of Artemisia tridentata
Balsamorhiza sagittata
Image of Balsamorhiza sagittata
Centaurea stoebe
Image of Centaurea stoebe
Chaenactis douglasii
Image of Chaenactis douglasii
Chamaenerion angustifolium
Image of Chamaenerion angustifolium
Chrysothamnus viscidiflorus
Image of Chrysothamnus viscidiflorus
Cirsium arvense
Images
not available
Cirsium cymosum
Images
not available
Cirsium foliosum
Images
not available
Cirsium undulatum
Image of Cirsium undulatum
Crepis acuminata
Image of Crepis acuminata
Crepis atribarba
Images
not available
Crepis occidentalis
Image of Crepis occidentalis
Crepis runcinata
Images
not available
Dieteria canescens
Image of Dieteria canescens
Erigeron caespitosus
Images
not available
Erigeron compositus
Image of Erigeron compositus
Erigeron corymbosus
Image of Erigeron corymbosus
Erigeron glacialis
Images
not available
Erigeron lonchophyllus
Images
not available
Erigeron pumilus
Image of Erigeron pumilus
Erigeron speciosus
Image of Erigeron speciosus
Eurybia conspicua
Images
not available
Helianthella uniflora
Images
not available
Helianthus annuus
Image of Helianthus annuus
Helianthus nuttallii
Image of Helianthus nuttallii
Heliomeris multiflora
Image of Heliomeris multiflora
Heterotheca villosa
Image of Heterotheca villosa
Hieracium scouleri
Image of Hieracium scouleri
Ionactis alpina
Images
not available
Madia glomerata
Images
not available
Matricaria discoidea
Image of Matricaria discoidea
NSF NEON | Open Data to Understand our Ecosystems The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.