OuiSi - Logo - Blk
Sori on a Polystichum Munitum Frond
Polystichum munitum

Location

Humboldt County, CA, USA

Date

09/07/2019

Description

Ferns are well known and appreciated for their very divided fronds that usually have a distinct "ferny" look. While I love looking at a good fern, I always flip the frond over to check for sori (spore bearing structures) which are found on the bottom of mature fronds and are usually a rusty brown or orange color. They are usually very symmetrically arranged on the fronds and add a whole new level of beauty to them! These sori are also useful in identifying specific species of ferns. I urge you to flip over the fronds of any ferns you find to see if you can find the sori!

Photo Link

https://www.instagram.com/p/CIv6Mo0FJcC/

Learn More

https://www.calflora.org/app/taxon?crn=6793
Matt Berger
Biodiversity fanatic. I find things. 12,000+ miles backpacked. Botanist. Plant, fungi and critter enthusiast
Learn more about Matt Berger.

Explore more with OuiSi Nature

OuiSi Nature: 54 – Blue Turkey Tail Mushrooms – Meg Madden
OuiSi Nature: 209 – Saint Andrew’s Cross Spider – Lenz Lim
OuiSi Nature: 180 – Colony of Brachycybe – Matt Berger
OuiSi Nature: 104 – Calcareous Tubeworm embedded Among Bryozoan – Kate Vylet
OuiSi Nature: 138 – Mushroom In Knothole – Meg Madden
OuiSi Nature: 101 – Lake Urema Floodplain – Jen Guyton