Nature By NameSign inCreate an account

Plants › Sea Lettuces

Thread Weed

Ulva compressa

Learn Thread Weed freeHow it works
Wildlife study photograph from iNaturalist.
(c) kiwialli, some rights reserved (CC BY)

23 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

See all photosAdd a photo

Photos you add are credited to you, and you keep the copyright.

Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Alaska.January 121, February 89, March 140, April 220, May 317, June 346, July 370, August 319, September 234, October 175, November 95, December 75.
United States3,079
Alaska2,501
California130
Canada98
New York86
Massachusetts65
New Jersey51
Maine32
British Columbia32
Quebec26

Counts show where people looked, not only where it lives.

Classification

KingdomPlants · Plantae
Phylumgreen algae · Chlorophyta
ClassUlvophycean green algae · Ulvophyceae
OrderSea Lettuces and Allies · Ulvales
FamilySea Lettuces · Ulvaceae
GenusSea Lettuces · Ulva

Sources

Remember the name next time.

Practise Thread Weed with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.

Create a free accountHow it works