Chlorophyta · Green Seaweed

Urospora wormskioldii

(Mertens ex Hornemann) Rosenvinge
Phylum
Chlorophyta
Class
Ulvophyceae
Order
Ulotrichales
Family
Ulotrichaceae

Urospora wormskioldii

Jade necklace

Authority
(Mertens ex Hornemann) Rosenvinge
Thallus is a dark green, unbranched, uniseriate filament. When fertile, the single chain of barrel-shaped cells, visible to the naked eye, looks like a necklace of small jade beads.

Habitat

This spring ephemeral is found on rock (usually cobble) in the low intertidal of semi-exposed habitats.

North Pacific Distribution

Aleutian Islands, Alaska to San Luis Obispo County, California; Japan; Russia

Former scientific names

Conferva wormskioldii, Hormiscia wormskioldii, Urospora vancouveriana

Similar taxa

Urospora spp. are finer, cells of Chaetomorpha spp. are rectangular and usually smaller.

Last updated December 26, 2010

Photos