Showing posts with label herbarium specimen. Show all posts
Showing posts with label herbarium specimen. Show all posts

Tuesday, August 17, 2021

Galeopsis Tetrahit, Common Hempnettle


Day 308: For all of its name being "Common Hempnettle," Galeopsis tetrahit was not known to occur in Pierce County until yesterday morning. Yep, I found it while I was out for a walk. The "up" side of this story is that I can add another check mark to my growing tally of rare and unusual plant sightings. The "down" side is that this one is a weed, and an invasive one at that. However, it also provided me with an opportunity to submit a voucher specimen to the Burke Herbarium, the first one I have ever made for WTU. As I once told Arnie, it's against my religion to pluck a plant from the wild, but in the case of an invasive, I'll make an exception. I made a second trip out to collect it, and it is currently drying in my plant press. What I had not realized until it was too late was that the plant was in seed. As I dug it out, it released dozens of them onto the ground. I'll need to monitor this site for the next several years to ensure that Galeopsis doesn't take hold in the county.

Friday, June 3, 2016

Erythranthe Breweri - A Penny Perspective


Day 233: I barely know where to begin. Yesterday, I went on a botanizing expedition with my friend Joe. He'd baited me with a report of an insectivore I'd never seen in the wild, but by the time the day was over, we had recorded half a dozen rare/uncommon species. The prize was won by Erythranthe breweri, formerly called Mimulus breweri and known commonly as Brewer's Monkeyflower. It has only been recorded in a few locations in Mount Rainier National Park, and the site at which we observed it was not one of them.

Upon referring our find to the Park's Plant Ecologist, we were dispatched on another mission: to collect a single specimen for inclusion in the Burke Museum's herbarium. I am of two minds with respect to taking herbarium specimens, one side of my head arguing that if it's rare, it should be left in place, even as the scientific part of my brain protests that being able to profile the DNA or otherwise study a rarity has great and growing value. Since we were able to count at least 36 individual specimens at this site, I carefully removed one, cleaned its hair-like roots of soil and pressed it temporarily between the pages of a notebook, laying it out as naturally as possible. Spreading the petals was no easy task since even in the space of a few minutes, they had begun to curl. Immediately upon returning home, I transferred it to acid-free paper and weighted it for drying. Once the process is completed, I will return it to the Park where it will be catalogued and archived.

Tuesday, May 17, 2016

Herbarium Specimen



Day 217: I was a little unsure of protocol when I gathered two specimens of Tussilago farfara from the Park even though they were slated for removal, and decided that I'd better check with our Plant Ecologist before turning them over to the Invasive Plant Council. I'm glad I did, or I might have been guilty of a federal offense. Even noxious weeds growing within the boundaries of a national park are government property. I could have disposed of them in a government trash can, but I was prohibited from giving them away, even though both the IPC's and the Park's herbarium specimens eventually wind up at the UW's Burke Museum. After some discussion with Arnie regarding the irony of this situation, it was decided that I could keep them at home for pressing and drying, since he didn't have a place in his office where they wouldn't interfere with daily operations.

Per the instructions I had been given by the IPC, I placed the specimens between sheets of acid-free paper backed by newsprint and cardboard to absorb moisture. Stacks of encyclopaedias and dictionaries served as my press. Although I have not glued them down (I don't have the proper archival cement), they're ready to turn over to Arnie for further disposition. This was the best one, showing both the flowers as well as the leaf and root structure.