Paropsisterna m-fuscum

Paropsisterna

Our nature journal group met at Will Rogers State Historic Park to journal the fire recovery. Will Rogers himself loved eucalypts, and many are planted there. I noticed that the epicormic growth and the crown sprouts were all being ravaged, and took a closer look.

conejo valley botanic garden

cvbg

cvbgmap

This month our nature journal club met at a botanic garden; it’s fabulous venue and one we’ll return to for sure. I made and distributed maps to the participants, then showed them how to do the Turkish map fold so they could stick it in their journals.

willow galls

galls

Galls, also known as cecidia, are abnormal swellings that form on the outer tissues of plants, resembling benign tumors or warts in animals. These growths can be triggered by a wide range of parasites, including viruses, fungi, bacteria, other plants, insects, and mites. The scientific study of these structures is called cecidology.

Galls come in many different sizes, shapes and colours; I’m always looking out for them. Our native arroyo willows display at least two different insect-triggered galls. The sawfly/midge lays its eggs under the surface of the leaf/stem. Cecidologists are still trying to figure out how the plant’s genetic instructions cause the responding structures, which provide shelter and food for the insect’s larvae when they hatch.

Salix lasiolepis

Salix lasiolepis

It was so good to meet with SMMNJC again this past weekend. Due to vacation, holidays, and wildfires it had been four months since I’d got to hang out with the gang. We welcomed four newcomers, and all enjoyed our time in the sun. I got curious about the arroyo willow flowers and identified male/female. Did not identify the odd stem growth, but mysteries are OK by me.