|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: [Annual] perennial herb to subshrub [shrub]. Stem: erect to sprawling, often freely branched. Leaf: generally opposite, distal sometimes alternate, petioled or sessile; blades thread-like to (ob)ovate or deltate, generally entire, rarely toothed (in California), +- minutely scabrous [glabrous], gland-dotted (in California). Inflorescence: heads disciform [discoid], +- inverted, in +- raceme-like [spike-like], leafy-bracted cluster; involucre +- hemispheric (in California), 2--10+ mm diam; phyllaries 3--15+ in 1--3+ series, free or +- fused, +- green or inner scarious to membranous; receptacle flat to hemispheric; paleae linear to wedge-shaped, +- membranous, sometimes 0. Pistillate Flower: 3--8; corolla +- white, inconspicuous, +- tubular. Disk Flower: 4--20+, staminate; corolla +- white to +- pink, funnel-shaped; anthers free or fused, tip incurved; style tip +- flared, truncate. Fruit: plumply obovate to pear-shaped, often +- compressed, glabrous or minutely scabrous or bristly distally; pappus 0.
Species In Genus: +- 9 species: North America. Etymology: (Latin: from mint Ajuga iva (L.) Schreb., with similar odor) Note: Other taxa in TJM (1993) moved to Euphrosyne.
eFlora Treatment Author: Bruce G. Baldwin, adapted from Strother (2006)
Jepson Online Interchange
Key to IvaPrevious taxon: Isocoma menziesii var. vernonioides
Next taxon: Iva axillaris
Citation for this treatment: Bruce G. Baldwin, adapted from Strother (2006) 2016. Iva, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=488, accessed on December 11, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 11, 2016.