2024 Edition • Get the App • Cite this Page
X

Colors

Data mode

Account

Login
Sign up

Collapse this

Support the Flora of the Southeastern US

2024 has been a banner year for making the best flora we can imagine. We've created:
With financial support from people like you, we are aiming even higher in 2025. Together we can accomplish all this: Vote on our 2025 priorities
  • Add Global Conservation Ranks (GRanks) vote
  • Professional graphic keys (polyclaves) to individual families/genera vote
  • 2 new FloraQuest apps: Florida & Mid-South vote
  • Image overlays highlighting diagnostic characters with arrows vote
  • iNaturalist integration in FloraQuest vote
Write-in vote: vote
We've set a goal of recruiting 200 ongoing supporters to donate $15 or more each month in 2025. Please help us reach this goal and make next year's flora even better:
Donate $15 per month
(0.2¢/heliophily index)
Donate $30 per month
(0.4¢/heliophily index)
Donate $50 per month
(amazing!)
Donate another
or one-time amount
Copy permalink to share

Steironema Rafinesque. Loosestrife.

Key to Steironema

A genus of about 8 species, perennial herbs, of North America. Steironema has occasionally been accorded genus rank in eastern North American floras (notably Small 1933, Gleason & Cronquist 1952, and Mohlenbrock 2014), but has more usually been included in Lysimachia. The morphologic differences from Lysimachia are more profound than the superficially similar flowers suggest. Yan et al. (2018) shows Steironema and Trientalis in a clade basal to Centunculus, Anagallis, and Lysimachia (in a narrower sense). We prefer to recognize these traditional and monophyletic clades at generic rank. Hab: A genus of X species, perennial herbs, of temperate and boreal North America.

Ref: Cholewa (2009f) In Flora of North America Editorial Committee (2009); Estes, Shaw, & Mausert-Mooney (2015); Gleason & Cronquist (1952); Mohlenbrock (2014); Weakley & Poindexter (2022) In Weakley et al. (2022); Yan et al. (2018). Show full citations.

Show in key(s)

Show parent family

Show species in Steironema

Your browser does not support SVGs

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© Erik Danielson | Steironema ciliatum source | Original Image ⭷
image of plant© Gary P. Fleming | Steironema lanceolatum | Original Image ⭷
image of plant© Brian Finzel, some rights reserved (CC BY-SA), uploaded by Brian Finzel | Steironema radicans source | Original Image ⭷
image of plant© Gary P. Fleming | Steironema tonsum | Original Image ⭷
image of plant© Gary P. Fleming | Steironema tonsum | Original Image ⭷

Feedback

See something wrong or missing on about Steironema? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months.