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Iris Linnaeus. Iris, Flag, Fleur-de-Lis, Blackberry-lily.

Key to Iris

A genus of about 225 species, herbs, of Eurasia, n. Africa, and North America. Wilson (2004) suggests that Belamcanda is phylogenetically nested within Iris and should be included there; Goldblatt & Mabberley (2005) make the appropriate nomenclatural combination. Alternatively, Iris may be broken up into multiple genera (Mavrodiev et al. 2014; Crespo, Martínez-Azorín, & Mavrodiev 2015; Mavrodiev et al. 2021).

Key advice:The petals are usually erect, smaller than the petaloid sepals (which are brightly colored, generally reflexed, and marked with a "signal"). The styles are also petaloid, arched over the sepals, and 2-cleft at the tip (except in I. domestica).

Ref: Boltenkov et al. (2020); Crespo (2013) In Rico et al. (2013); Crespo, Martínez-Azorín, & Mavrodiev (2015); Fernald (1947); Goldblatt (2002b) In Flora of North America Editorial Committee (2002a); Goldblatt & Mabberley (2005); Goldblatt, Manning, & Rudall In Kubitzki (1998a); Henderson (2002) In Flora of North America Editorial Committee (2002a); Mavrodiev et al. (2014); Mavrodiev et al. (2021); Wilson (2004). Show full citations.

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Bruce A. Sorrie | Iris cristata | Original Image ⭷
image of plant© Keith Bradley | Iris domestica | Original Image ⭷
image of plant© Collectors SOS | Iris versicolor | Original Image ⭷
image of plant© Bruce A. Sorrie | Iris virginica | Original Image ⭷
image of plant© Bruce A. Sorrie | Iris cristata | Original Image ⭷
image of plant© Gary P. Fleming | Iris pseudacorus | Original Image ⭷
image of plant© Gary P. Fleming | Iris germanica | Original Image ⭷

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