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fernzenmosses http://fernzenmosses.com for love of nature Fri, 02 Jun 2017 01:36:02 +0000 en-US hourly 1 http://wordpress.org/?v=3.4.2 2014 Calendar Pages http://fernzenmosses.com/2013/12/14/2014-calendar-pages/ http://fernzenmosses.com/2013/12/14/2014-calendar-pages/#comments Sun, 15 Dec 2013 06:07:18 +0000 admin http://fernzenmosses.com/?p=654 Strict Standards: Non-static method nggGallery::get_option() should not be called statically, assuming $this from incompatible context in /home/fernzenm/public_html/wp-content/plugins/nextgen-gallery/lib/shortcodes.php on line 47
I have prepared 2014 nature calendar pages for general distribution. If used for a money making program, I would appreciate a cut of the profits. Otherwise, copyright waiver is granted without fee. I invite nature lovers, particularly from the Pacific Northwest, to download them for personal use. Click on this link:]]>
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I have prepared 2014 nature calendar pages for general distribution. If used for a money making program, I would appreciate a cut of the profits. Otherwise, copyright waiver is granted without fee. I invite nature lovers, particularly from the Pacific Northwest, to download them for personal use. Click on this link:

You can download the pages and open them with your favorite processing software. The nature notes and sun times are specific to southern Willamette Valley. Modify, edit, and add your own pictures. Have fun!

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Racomitrium confessions: value of revisiting identifications http://fernzenmosses.com/2012/06/19/19-june-2012-archive-from-13mar2010-racomitrium-confessions/ http://fernzenmosses.com/2012/06/19/19-june-2012-archive-from-13mar2010-racomitrium-confessions/#comments Wed, 20 Jun 2012 04:12:44 +0000 admin http://fernzenmosses.com/?p=445 Strict Standards: Non-static method nggGallery::get_option() should not be called statically, assuming $this from incompatible context in /home/fernzenm/public_html/wp-content/plugins/nextgen-gallery/lib/shortcodes.php on line 47
  LESSONS RECALLED — THE VALUE OF GOING BACK TO STUDY SPECIMENS PREVIOUSLY ANNOTATED (This is an email message that I sent to bryo buddies several years ago; confessions that might give wise caution to young students of mosses.) March 13, 2010 Well, yesterday was a humbling day in the lab. I have had to [...]]]>
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LESSONS RECALLED — THE VALUE OF GOING BACK TO STUDY SPECIMENS PREVIOUSLY ANNOTATED

(This is an email message that I sent to bryo buddies several years ago; confessions that might give wise caution to young students of mosses.)

March 13, 2010

Well, yesterday was a humbling day in the lab. I have had to eat three determinations, ruining some good records.

First, I got around to looking into the packet of what I’d reported  was Racomitrium norrisii from the Olympic Peninsula. I made new sections, and they did not look at all like what I expected. The big fragments of chopped leaves in the mount didn’t even look like Racomitrium! …and they weren’t.

What I’d done previously is observe shoots with capsules, definitely Racomitrium capsules, and noted these plants had muticous leaves. “Probably R. aciculare, as correctly det. by Harthill,” I thought. There aren’t many of the capsule bearing shoots in the packet, so first time around I picked out a couple of vegetative shoots to make leaf mounts, something I do to avoid unnecessarily destroying fertile shoots. These leaves had obvious bistratose margins and the finely denticulate leaves characteristic of R. norrisii. So I reported that’s what I thought was at hand.

Well, it turns out this is a mixed collection. The vegetative shoots are Schistidium rivulare, the fertile shoots are Racomitrium aciculare. Harthill had gotten the Racomitrium specimen correctly identified, just included in his collection a lot of other stuff from the same rock. Sigh … Lesson: beware of mixed collections; be sure capsules belong to shoots you are studying.

Next, I re-examined a collection I’d called Racomitrium lawtoniae from California, from hot springs on Mt. Lassen. I’d always had a nagging in the back of my mind that something was wrong with that det. Just two weeks ago at CAS I came across several lovely specimens of R. lawtoniae that Jim Shevock gathered in British Columbia, in the company of Bill Buck and Judy Harpel. These were confirmed by Halina Bednarek-Ochyra. On the one hand, I was pleased to  see that all three collections were fertile and had right-handed twists to their setae, unique in the subgenus Ellipticodryptodon (=Bucklandiella). But, on the other hand, they were all very robust, with falcate leaves  characteristic of R. lawtoniae. The California collection I’d been unsure about was small, and had straight leaves. My re-examination came after having worked out R. affine from studies of other collections, and  this one proved to be that. I need to revise my keys to point out that the decurrent, hyaline hairpoints that characterize R. lawtoniae are also frequently present in R. affine, just on a smaller scale. There are other differences in costal anatomy and alar cells. Lesson: size characters are good characters; remember to always measure and record measurements.

Finally, I had my head slapped over two specimens I’d previously called Cynodontium strumulosum, one from North Cascades of Washington and one more recently from the Oregon Cascades. David Toren had keyed the latter (a R. Weiss collection) to Andreaea nivalis, something I’d not considered. David Toren is right. This species of Andreaea is a vegetative ringer for Cynodontium strumulosum and has fooled more prominent bryologists than me. I hadn’t paid attention to the costal anatomy even though I had good photographs of leaf sections. Lesson: pay attention to all data in hand.

So, I go forward more cautiously. I keep learning.

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Radula complanata photographs http://fernzenmosses.com/2012/05/10/2012-may-10/ http://fernzenmosses.com/2012/05/10/2012-may-10/#comments Thu, 10 May 2012 17:52:14 +0000 admin http://fernzenmosses.com/?p=236 Strict Standards: Non-static method nggGallery::get_option() should not be called statically, assuming $this from incompatible context in /home/fernzenm/public_html/wp-content/plugins/nextgen-gallery/lib/shortcodes.php on line 47
We went out to visit our friends in the country yesterday and I took a little walk in the woods. I found something I’ve been looking for for a long time. It is Radula complanata, a liverwort that grows on small stems of shrubs in the understory. That means it is usually in the shade. [...]]]>
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Radula complanata

Radula complanata growing on Corylus.

We went out to visit our friends in the country yesterday and I took a little walk in the woods. I found something I’ve been looking for for a long time. It is Radula complanata, a liverwort that grows on small stems of shrubs in the understory. That means it is usually in the shade. It is a relatively common species but I did not have a good field picture because I wanted to find one with the sun shining on it. Yesterday I found this and got a nice set of pictures. Even the pictures of a plant in the shade turned out fine.

Radula complanata in the shade

Radula complanata in the shade

]]> http://fernzenmosses.com/2012/05/10/2012-may-10/feed/ 0 Clouds over Pelling http://fernzenmosses.com/2012/05/09/clouds-over-pelling/ http://fernzenmosses.com/2012/05/09/clouds-over-pelling/#comments Wed, 09 May 2012 14:32:08 +0000 admin http://fernzenmosses.com/?p=178 Strict Standards: Non-static method nggGallery::get_option() should not be called statically, assuming $this from incompatible context in /home/fernzenm/public_html/wp-content/plugins/nextgen-gallery/lib/shortcodes.php on line 47
The first morning were in Pelling gave us the best sunrise view of the Kangchendzonga Himalaya. This scene is etched in my memory.]]>
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clouds over Pelling

The first morning were in Pelling gave us the best sunrise view of the Kangchendzonga Himalaya. This scene is etched in my memory.

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Rare Liverworts of Oregon http://fernzenmosses.com/2012/05/07/liverworts-of-oregon/ http://fernzenmosses.com/2012/05/07/liverworts-of-oregon/#comments Mon, 07 May 2012 21:48:06 +0000 admin http://fernzenmosses.com/?p=97 Strict Standards: Non-static method nggGallery::get_option() should not be called statically, assuming $this from incompatible context in /home/fernzenm/public_html/wp-content/plugins/nextgen-gallery/lib/shortcodes.php on line 47
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Barbilophozia barbata - shoot side view Barbilophozia lycopodioides - shoot Cephaloziella spinigera - autoicous shoot Cephaloziella spinigera - female shoot Cephaloziella spinigera - gynoecium Cephaloziella spinigera - perianth Cryptomitrium tenerum - carpocephalum section Cryptomitrium tenerum - pore and oil-body cells Cryptomitrium tenerum - pore cross section Cryptomitrium tenerum - pore Haplomitrium hookeri - male from above Haplomitrium hookeri - male shoot Haplomitrium hookeri - shoot Haplomitrium hookeri - spores and elaters Lophozia laxa - male shoot tip Lophozia laxa - vegetative shoot Marsupella aquatica - leaf Marsupella aquatica - shoot tip dorsal Peltolepis quadrata - capsule wall Peltolepis quadrata - spore and elater Plagiochila semidecurrens - shoot tip Preissia quadrata - pore from below Preissia quadrata - pore section Ptilidium pulcherrimum - male bracts Ptilidium pulcherrimum - male shoot Ptilidium pulcherrimum - shoot tip female plant Radula brunnea - lateral branch Radula brunnea - primary shoot and branch bases Scapania gymnostomophila - gemmae Scapania gymnostomophila - shoot tip Scapania obscura - leaf ventral Scapania obscura - shoot Scapania obscura - ventral aspect, stripped Schofieldia monticola - leaf Schofieldia monticola - lobe tip Schofieldia monticola - shoot in situ Schofieldia monticola - shoot Sphaerocarpos hians - female thallus Tritomaria exsectiformis - gemmae Tritomaria exsectiformis - shoot ]]>
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