A Close-up View of the Beautiful Invader Purple Loosestrife
- Photographic study by Brian Johnston of the invasive weed Lythrum salicaria, with fine images of the plant on an ever decreasing scale.
- http://www.microscopy-uk.org.uk/mag/artdec04/bjloosestrife.html

Lythrum salicaria
- Several photographs and information about Purple Loosestrife.
- http://www.plant-identification.co.uk/skye/lythraceae/lythrum-salicaria.htm

Purple Loosestrife (Lythrum salicaria)
- Documents the spread and impact of purple loosestrife in North America.
- http://www.npwrc.usgs.gov/resource/plants/loosstrf/loosstrf.htm

Lythrum alatum
- Winged Lythrum.
- http://www.npwrc.usgs.gov/resource/plants/floramw/species/lythalat.htm

Lythrum salicaria - Purple Loosestrife
- Profile from PLANTS database: photographs, classification, distribution in the U.S., status as a weed under state laws, and related links.
- http://plants.usda.gov/java/profile?symbol=LYSA2

Lythrum virgatum
- European Wand Loosestrife.
- http://plants.usda.gov/java/profile?symbol=LYVI3

Lythrum lineare
- Wand Lythrum.
- http://plants.usda.gov/java/profile?symbol=LYLI2

Lythrum salicaria (Purple Loosestrife)
- Fact sheet from The Nature Conservancy's Wildland Invasive Species Team.
- http://tncweeds.ucdavis.edu/esadocs/lythsali.html