July 24, 2013 - Polygonum douglasii, Douglas' knotweed - Polygonaceae



I walked the wildflowers July 24, three days ago. I spent almost all of my waking time dinking with the photos for three days. I was out about an hour and a half. I took 205 images. I’ve kept 82.

The photos were bad, again. So processing was a lot of work. I kept some bad photos thinking there is something to learn from them.
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Afternoon temperatures have been in the 90’s for a couple of weeks. Humidity has been very low. It will be 23 this afternoon, wind, 5-10 mph. The temperatures are in the very low 60’s before sunup.

The ten day forecast says four days of high 80’s and low 90’s then, in August, 6 days of down and up in the 80’s.
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The official sunrise is 5:21, today, sunset 8:30. The sun rises behind Baldy this time of year so the actual sunrise is somewhat later than the official sunrise. It might be ten or fifteen minutes later.

It has continued to be hot till 7 in the evening so I thought I would go out at dawn. I didn’t make dawn. I was out by 7 a. m.
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I am never rested at 7 in the morning. But I went to work without being rested when I was railroading. I know how to do that.

But I wasn’t 81 years old, then.

Whatever. I decided to make a quick trip with limited objectives. I wanted seedpods for Asclepius speciosa, showy milkweed, blowballs of Gaillardia aristata, blanket flower and I wanted to improve my photos of Perideridia gairdneri, yampah. I didn’t think to look for Bidens vulgata, beggar tick. I need it for my collection of Drumheller Springs Park Asteraceae. They were in bloom July 11th last year. They should be in bloom, now.  There’s a thick mass of them north of South pond, under the umbrella.
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I decided to park by the fireplug on Euclid as the shortest walk to the patch of Asclepius speciosa.

I cruised the southeast corner of the park slowly watching for the Erigeron caespitosus I found there this time last year … July 20. I stopped and walked the area. No sign of them.

I remembered that I wanted blowballs and seeds of the Erigeron pumilus, shaggy fleabane and got some. The seed photos were worthless.

These two Erigeron, each a single small patch are the only specimens of either in the park, as far as I know. That makes me wonder if they, too, have been introduced. As I said, E. caespitosus is not in evidence this year. E. pumilus, however, is luxuriant. There were few ‘stems’ last year. There are scores, this year.
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I waited too long for most of the A. speciosa, showy milkweed. I thought I remembered milkweed pods down by the river, many years ago that were reddish brown and broke open to free downy cypsela to fly away. Nothing like that was present. I think I photographed an A. speciosa fruit. And, when processing the photos, I saw what might be seeds.

There was a very interesting dead bug on one plant. I did a little reading on monarch butterflies last week. If I remember correctly they are poisonous to predators from eating poisonous milkweed. It seems that they are able to accommodate the poisons in their system but the poison kills other insects … if I remember correctly. I assumed that was what got this bug.
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As I said, above, it has been very hot and very dry for a long time and, once again I was surprised to see Erigeron compositus, cutleaf fleabane foliage green-up during draught conditions.

I have a photo of a blowball with the photos of E. compositus foliage. I don’t remember taking it. The numbering suggests that it is E. compositus but it doesn’t look right. It must have been Gaillardia aristata, blanket flower, taken out of order. It seems to have scales rather than bristles for a pappus.
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 I left the main trail to look for more Perideridia gairdneri, Gairdner’s yampah, for Judith Lowry.

I found a short plant and hoped I could get a better ‘plant photo’. I didn’t.

I attempted to dig it up but it was embedded in rock. It took a lot of strength just to break it off.
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I noticed plants with wiry stems with tiny lumps on them. I remembered them from last year. I couldn’t remember the identification but I have looked back at last year. They seem to be Polygonum douglasii, Douglas’ knotweed - Polygonaceae family.
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My plant photos of Gaillardia aristata, blanket flower were failures but I got satisfying photos of blowballs and cypsela.
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I was very tired by this time and it was getting hot. I was out of patience as well as strength … and, of course, I found two more plants I had to try to record. I did the alibi above because the photos are not good. Next time. I can only hope there will be a next time this year for the apparent Agoseris.
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I think there are two Madia in the park. I believe this one to be Madia glomerata, stinking tarweed. The name seems a little strange. The odor was strong but it was not unpleasant.

I took one beside the main trail to photograph later.
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Walking across the open area between south pond and tall pine grove on the way back to my car I saw an Asteraceae that seemed too late in the year. I believe it to be Agoseris glauca. If not A. glauca, then perhaps another Agoseris.

There seemed to be drops of golden goo secretions on the plant. The ‘golden goo’ is seen to be mites in the processed photos.
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There’s an argument against the Agoseris identification. Agoseris have only ray florets. This inflorescence seems to have stunted ray florets and strange disk florets with ‘open’ corolla tubes.

But it may be that what looks like ‘an open corolla tube’ to me looks like a ray floret to a botanist.

THE PHOTOS

010 Erigeron pumilus, shaggy fleabane - Asteraceae
010-0180

0110 2012-0110 2013 When I decided to look back at the photo of this plant last year I supposed I would see that there are many more stems now than there were, then. Now that I have looked back I suspect that there are not more stems, that the 9 stems in the 2012 photo are only more luxuriant. That’s a little strange as dry and hot as this year has been, unless someone walked across the street and fed it fertilizer.

It’s flourishing is only strange unless Erigeron just really like it hot and dry, see the green-up of Erigeron compositus, above.


I need to remember to look at the base of the E. pumilus plant and count the stems the next time I go out.


Erigeron pumilus, shaggy fleabane, 2012

The same plant, 2013













175 I wonder about the difference in the cypsela at the top and at the bottom of the photo. It can’t be a matter of failed focus.


020 Asclepias speciosa, showy milkweed - Apocynaceae
0210-0290

I looked for seed pods with downy cypsela bursting from them. I found nothing of the kind.











0265 This must be the fruit of Asclepias speciosa.


0270 I suppose these are seeds.





030 Erigeron compositus, cutleaf fleabane - Asteraceae
0310-0320


0310 A spot of fresh green in a dry world.


0320 This photo was taken immediately after the photo of Erigeron compositus foliage but it must be the blowball of Gaillardia aristata, blanket flower. It just doesn’t look right to be E. compositus and, of course, the time is wrong for E. compositus. Note the scale like pappus. I don’t remember taking the photo but there it is.


040 Perideridia gairdneri, yampah - Apiaceae
0410-0486
This is just an attempt to put out a lot of stuff for Judith Lowry to choose from.


I don’t know why I keep having trouble with images of whole plants. I suppose they are over exposed. I suppose all I have to do is pay more attention to the camera.



















050 Polygonum douglasii, Douglas’ knotweed – Polygonaceae
0510-0570

I checked the Burke photos and the Carr photos of Polygonum douglasii and they seem to have broad leaves toward the base of the plant but that is probably not significant.


0520-0580 These are buds … unless they are seed pods. The flowers are a pale 5 pointed star.







060 Gaillardia aristata, blanket flower – Asteraceae
0610-0670






0660 The floral tube detached from the cypsela.


0670 The cypsela without the floral tube. Note ‘scales’ rather than bristles in the pappus. One wouldn’t suppose the cypsela with heavy scales would fly as far.


070 Agoseris glauca – Asteraceae
0710-0790

I have no confidence at all in this identification or the identification of any plant that I have labeled Agoseris glauca over the last two years or more.






0750a is ‘before and after’ processing. I ran up the mid-tones for detail. The reds were bloody. So I reduced the reds some. I think I did a little to reduce the highlights in the leaves but I don’t remember. As you can see, the experiment with velour is less than success at the moment. I hope the ‘specks’ are sizing or something of the kind. I’ve attempted to wash them out since this photo was taken. I’ll know if I was successful next photo session.

before                              after

0755-765 Agoseris glauca should be all ray florets. These photos have what might be disk florets … with open corolla tubes.





0773 I took lots of images of individual seeds, all out of focus. Too much of the time I am trying to photograph what I cannot see.




0775-0778 I thought these were golden secretions from the plant. 


0790 I thought this was a caterpillar. I’m no longer confident.



080 Madia glomerata, stinking tarweed – Asteraceae
0810-0860
Yellows in bright light continue to be a problem. Madia glomerata ray florets are interesting and I don’t have them in these images. Next time, maybe.


I heard a ‘tip’ in a youtube.com video on macro photography that I will try, a piece of printer paper to filter hard sunlight. It might demand more dexterity that I have … or better, demand an assistant.





0850 is the best I could do for the ray florets.



Madia glomerata was abundant last year. I saw only this one plant this year, so far.


They are native but they seem to be opportunistic and, like Matricaria discoidea, pineapple weed, also native, they are often found along the disturbed earth of the main trail.

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