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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

CALENDULA
Annual [perennial herb], generally glandular-hairy. Stem: erect or ascending, branched. Leaf: simple, alternate. Inflorescence: heads radiate, 1, peduncled; phyllaries ± equal in 2–3 series, linear or ± lanceolate, margins narrowly scarious; receptacle flat, epaleate. Ray flower: 5–50+; ray yellow or orange. Disk flower: 20–150+, staminate; corolla yellow to brown; anther base sagittate, short-tailed, tip ovate or triangular-ovate; style with ring of hairs just below tip, branches very short. Fruit: generally of 3–4 kinds per head, winged or not, beaked or not, straight to strongly incurved and almost forming a circle, smooth, wrinkled, or with many prickles or bristles on back; pappus 0.
± 15 species: Europe, northern Africa, western Asia. (Latin: 1st day of the month, perhaps for flowering all year) [Strother 2006 FNANM 19:381–382]
Unabridged references: [Heyn et al. 1974 Israel J Bot 23:169–201]

Key to Calendula

1. Head, including rays, generally 1–4 cm diam; ray flowers 5–20, ray generally 5–8 mm; leaf ± lanceolate ..... C. arvensis

1' Head, including rays, generally > 5 cm diam; ray flowers generally 30–50+, ray generally 12–20 mm; leaf oblong to obovate ..... C. officinalis

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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