Frostweeds
Crocanthemum
Crocanthemum is a genus of flowering plants in the family Cistaceae. They are native to both North and South America where they are widespread. The common name frostweed relates to the ice crystals which form from sap exuding from cracks near the base of the stem in the late fall.
Crocanthemum are herbaceous perennials or subshrubs with alternate leaves. With the exception of species in California, they generally produce two types of flowers: showy, yellow chasmogamous (cross-pollinated) produced earlier in the growing season, followed by cleistogamous (self-pollinated) flowers that are smaller and lack petals. All species of Crocanthemum are fire tolerant and are found in open habitats.
23 branches of this genus, most-observed first
peak rushrose
speciesCrocanthemum scoparium
Canada frostweed
speciesCrocanthemum canadense
Pine Barren Frostweed
speciesCrocanthemum corymbosum
plains frostweed
speciesCrocanthemum bicknellii
Florida Scrub Frostweed
speciesCrocanthemum nashii
Carolina rockrose
speciesCrocanthemum carolinianum
Alderson's rushrose
speciesCrocanthemum aldersonii
clustered frostweed
speciesCrocanthemum glomeratum
Georgia frostweed
speciesCrocanthemum georgianum
Rosemary Frostweed
speciesCrocanthemum rosmarinifolium
coastalsand frostweed
speciesCrocanthemum arenicola
Crocanthemum brasiliense
speciesCrocanthemum brasiliense
island rush-rose
speciesCrocanthemum greenei
Bisbee Peak Rush-rose
speciesCrocanthemum suffrutescens
Crocanthemum patens
speciesCrocanthemum patens
Low Frostweed
speciesCrocanthemum propinquum
Bushy Frostweed
speciesCrocanthemum dumosum
Crocanthemum pugae
speciesCrocanthemum pugae
Crocanthemum coulteri
speciesCrocanthemum coulteri
Crocanthemum pringlei
speciesCrocanthemum pringlei
Crocanthemum chihuahuense
speciesCrocanthemum chihuahuense
Crocanthemum argenteum
speciesCrocanthemum argenteum
Crocanthemum nutans
speciesCrocanthemum nutans
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Crocanthemum in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 204136.