Heterotheca sessiliflora (Nutt.) Shinners

Sessileflower False Goldenaster
Asteraceae

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Protologue: Field & Lab. 19: 71 (1951)
Pronunciation: He-te-ro-thè-ca ses-si-li-flò-ra
Etymology: From the Greek heteros, different + theke, box, case, cup, chest, container, from the differing achenes of the ray and disk florets
L. sessilis, sitting + floris, flower, thus with sessile flowers

Note: Treated as having varieties in Jepson eFlora; we follow:
Nesom, G. L. 2020. Taxonomic revision of Heterotheca (Asteraceae: Astereae): Sect. Phyllotheca. Phytoneuron 2021-90:1-76.

CNPS Inventory ranking: 1B.1 S1 G4T2T3

Jepson eFlora Treatment

SD County Synoptic Voucher

Distribution:
  
LEFT: S.D. County Plant Atlas (http://sdplantatlas.org). RIGHT: CCH2 (http://cch2.org), as H. s. var./subsp. sessiliflora


Images:


Note undulate leaves, radiate heads, long bracts subtending head. Fruits of both ray and disk flowers are similar, all with a capillary pappus,