Tag Archives: Juglans regia

CalNat Field Trip #2, Lake solano Park, 07-13-19

On the way to Lake Solano Park for our second Certified California Naturalist field trip of the summer, I stopped to put some gas in my car, and I was treated with the sight of some hot air balloons floating over the city of Winters and its surrounding fields. One of the balloons was either dragging or coming in for landing because it got REALLY low over downtown. I could see the people in the basket.  I was kind of surprised to see the balloons at all considering that it was already about 62° when I got to Winters.  Hot air balloons only work if the air around them is cooler than the air in the balloon (so they fly more successfully in the fall-to-spring time period than they do in the summer.)

I was the first one in our group to get to the park and pulled up into one of the upper parking lots because the lot nearest the park itself was still closed.  Technically, the park doesn’t open until 8:00 am, so I was there before the all-gates-open time. The rangers weren’t too pleased that I was in the upper lot before 7:30 am, but they didn’t say anything – until AFTER 8:00 am and my students had arrived, and we were in the park area itself.  I’ll know better next time not to get there early.

The reason for trying to get my group there earlier in the day, though, was to try to beat the heat. It got up to 79° by 10:30 am. So, we cut the trip a little short to get everyone back in their air-conditioned cars before we all overheated. Along with my co-worker Bill and most of the students in the class, Greg Ira (the Director of the Certified California Naturalist program at the University of California) joined us for our walk.

CLICK HERE for the full album of photos.

One of the first things we pointed out to the group was the difference between the native Black Walnut trees and the English Walnut trees. English Walnut trees don’t generally do good in California, so they’re grafted onto the native Black Walnut root stock. We were able to show the students the graft mark in one of the trees (with the Black Walnut on the bottom and the English Walnut on top) and showed them that even through the tree itself was now primarily English Walnut, they could still see some shoots of Black Walnut stems and leaves growing up out of the root stock.

English Walnut grafted onto Black Walnut rootstock.

We seemed to hear more birds than we put eyes on, and my student Alison K., who like our student Ken E., is a birding expert, helped us with the sound IDs.  Alison also told the group about the sap wells we were seeing in the bark of some of the trees, created by Sapsucker birds who drill the wells not so much to suck the sap, but to attract insects they can eat.  On one tree we found several clear samples of the wells, along with some hefty outpourings of the sweet sap.

Tree sap oozing from wells drilled by Sapsuckers.

We also came across a large juvenile Great Blue Heron that was sitting in a tree adjacent to the trail.  It posed for some photos, pooped into the river and then flew off with a deep-throated croaky squawk. I guess he told us what he thought about us. We also came across a small creche of Peahens with their fledgling poults. A group of three moms were taking the babies to the edge of the river to get a drink.

 I myself was focused more on finding galls than seeing birds on this trip, however, and was able to point out newly budding examples of Pumpkin galls, Roll Gall Midge galls, Erineum Mite galls, Cluster Galls, Spiny Turbans, Two-Horned galls and Flat-Topped Honeydew galls. Most of the galls were just starting to emerge and weren’t their full size yet.  Give them another week or two and they should be spectacular.

 Our group also found quite a few different orb-weaver spiders included Spotted Orb Weavers and Long-Jawed Orb Weavers. And we spotted a variety of butterflies, dragonflies and damselflies including: California Pipevine Swallowtail butterflies, a sleepy Buckeye butterfly, a Painted Lady butterfly, and a Tiger Swallowtail butterfly on the wing; Widow Skimmer dragonflies, Flame Skimmers, Four-Spotted Skimmers, Pond Skimmers and Blue Dasher dragonflies, plus several damselflies that looked like they’d just emerged and weren’t colored-up yet.

Along with imparting some of what I know to the class, I always learn something new on these field trips or add to knowledge I already have, so it’s always fun and exciting to me. I found two galls I hadn’t seen before and found out that even the experts were having trouble properly identifying them. One was a gall made by the Roll Gall Midge (whose species is known but not its genus) and it took the form of rolled edges along the leaves of Live Oak trees.  The other was an odd tubular “prick” on the leaf of a Valley Oak tree. At first, I thought I was just looking at a weird anomaly on the leaf, but then I saw the exact same structure repeated on leaves of different Valley Oaks, so I took some photos and looked it up when I got home.  Experts recognize it as a wasp-induced gall but they don’t know what species it’s associated with yet, and think it might be a second-generation gall for an already identified gall wasp.  Everything I found on it called it a “Leaf Gall Wasp” gall but with the species listed as “Unidentified”. How neat!

Gall of the UNIDENTIFIED Leaf Gall Wasp.

 As we were looking at some California Wild Grape vines, Greg asked for the term for the process by which tendrils wrap around things. None of us could remember it at the time. Of course, when I got home, it came to me: “THIGMOTROPSIM”! Cool word, huh?  You can read more about it here: http://biology.kenyon.edu/edwards/project/steffan/b45sv.htm

Another word that wouldn’t come to mind yesterday when we were out on the field trip… We saw a lot of damselflies that had apparently just emerged and weren’t “colored up” yet, and I couldn’t remember the term for that state.  It’s “TENERAL“: the state of an insect immediately after molting. At this time the insect’s exoskeleton has not hardened and it may be pale in color.

A “teneral” damselfly

A little further along our walk, some of the students noticed frothy ooze coming out of the base of a Valley Oak tree. It looked something like Sudden Oak Death (SOD) to me, but it was a lot more frothy, and I’d never seen SOD near the bottom of a tree before. So, I looked it up when I got home.

 The foam is from a bacterial infection in the tree called “Alcoholic Flux” or Foamy Canker. It usually affects trees in the summer that have been stressed in some way. Bacteria infects the tree and ferments some of the sap. The fermentation is expelled by the tree in a frothy slime that kind of smells like sour beer. Unlike SOD, alcoholic flux isn’t usually a permanent or fatal kind of infection. It’s usually gone by the end of the summer.

“Alcoholic Flux” or Foamy Canker on the base of a Valley Oak tree.

We’d also seen a lot of small gnats around the ooze, and I’m not sure, but I’m going to infer that they were getting buzzed on the fermented juice. Hah!

By 10:30 it was already too hot to keep people out in the sun, so the group broke up and we all headed back to our cars by different routes.

Species List:

  1. Acorn Woodpecker, Melanerpes formicivorus,
  2. Alcoholic Flux bacteria, Foamy Canker, Slime Flux,
  3. American Bullfrog, Lithobates catesbeianus,
  4. Belted Kingfisher, Megaceryle alcyon,
  5. Black Phoebe, Sayornis nigricans,
  6. Black Walnut, Juglans nigra,
  7. Blue Dasher, Pachydiplax longipennis,
  8. Blue Elderberry, Sambucus cerulea,
  9. Box Elder Tree, Acer negundo,
  10. Bull Thistle, Cirsium vulgare,
  11. California Pipevine Swallowtail Butterfly, Battus philenor hirsuta,
  12. California Pipevine, Aristolochia californica,
  13. California Scrub Jay, Aphelocoma californica,
  14. California Wild Grape, Vitis californica,
  15. Canada Goose, Branta canadensis,
  16. Common Buckeye Butterfly, Junonia coenia,
  17. Common Merganser, Mergus merganser,
  18. Convoluted Gall Wasp, Andricus confertus,
  19. Eight-Spotted Skimmer, Libellula forensic,
  20. English Plantain, Ribwort, Plantago lanceolata,
  21. English Walnut, Juglans regia,
  22. Flame Skimmer, Libellula saturate,
  23. Flat-Topped Honeydew Gall Wasp, Dishopcaspis eldoradrnsis,
  24. Great Blue Heron, Ardea herodias,
  25. Green Shield Lichen, Flavoparmelia caperata,
  26. Hoary Rosette Lichen, Physcia aipolia,
  27. Indian Peafowl, Pavo cristatus,
  28. Interior Live Oak, Quercus wislizeni,
  29. Leaf Gall Wasp, Unidentified
  30. Painted Lady Butterfly, Vanessa cardui,
  31. Poison Oak, Toxicodendron diversilobum,
  32. Pumpkin Gall Wasp, Dryocosmus minusculus,
  33. Roll Gall Midge, Contarinia sp.,
  34. Spiny Turban Gall Wasp, Antron douglasii,
  35. Spotted Orb Weaver Spider, Neoscona crucifera,
  36. Sunburst Lichen, Xanthoria elegans,
  37. Two-Horned Gall Wasp, Dryocosmus dubiosus ,
  38. Valley Oak, Quercus lobata,
  39. Walnut Erineum Mite Gall, Aceria erinea,
  40. Western Pondhawk, Erythemis collocata,
  41. Western Tiger Swallowtail Butterfly, Papilio rutulus,
  42. Widow Skimmer Dragonfly, Libellula luctuosa,
  43. Woolly Aphid, Prociphilus sp.,

Wren Housekeeping and Slime Molds, 05-21-19

I got up a little before 6:00 am and headed over to the Effie Yeaw Nature Preserve for my regular Tuesday trail-walking gig.  It was cool and rain threatened, but it didn’t actually start raining until I got back into the car to head home, so that was nice.  I was joined on the walk by Mary Messenger (The Other Mary), and we took the trails in a counterclockwise fashion just to mix things up a little bit. I was hoping to see the young coyote again, but I didn’t.  Later, Rachel (the volunteer coordinator) told us that she’d spotted it in the company of a larger coyote in the big field right before the turn off to the nature center.  She suspected it was too-lean female, but I think it’s a juvenile.  Hard to tell, though, unless we can get a really good look at it.

CLICK HERE for the album of photos.

I did get to see couple of slime molds, which was cool, and also got to watch House Wrens doing their daily chores: bringing twigs and feathers to line their nesting cavity; bringing breakfast to the kids; and taking out the trash (taking the babies’ fecal sacs out of the nest).  We also got photos of a cooperative Desert Cottontail rabbit who was eating clover along the edge of the trail.  So cute.

We walked for about 3 ½ hours and then head back home.

Species List:

  1. Acorn Woodpecker, Melanerpes formicivorus,
  2. American Bullfrog, Lithobates catesbeianus,
  3. Anna’s Hummingbird, Calypte anna,
  4. Ash-Throated Flycatcher, Myiarchus cinerascens,
  5. Black Jelly Roll fungus, Exidia glandulosa,
  6. Black Phoebe, Sayornis nigricans,
  7. Black Walnut, Juglans nigra,
  8. Blessed Milk Thistle, Silybum marianum,
  9. Blue Elderberry, Sambucus cerulea,
  10. Bryum Moss, Bryum capillare,
  11. Bush Katydid, Scudderia furcata,
  12. California Ground Squirrel, Otospermophilus beecheyi,
  13. California Pipevine Swallowtail, Battus philenor hirsuta,
  14. California Pipevine, Dutchman’s Pipe, Aristolochia californica,
  15. California Scrub Jay, Aphelocoma californica,
  16. California Towhee, Melozone crissalis,
  17. California Wild Grape, Vitis californica,
  18. Canada Goose, Branta canadensis,
  19. Columbian Black-Tailed Deer, Odocoileus hemionus columbianus,
  20. Desert Cottontail, Sylvilagus audubonii,
  21. Eastern Fox Squirrel, Sciurus niger,
  22. Eastern Phoebe, Sayornis phoebe,
  23. English Walnut, Juglans regia,
  24. European Starling, Sturnus vulgaris,
  25. Gold Dust Lichen, Chrysothrix candelaris,
  26. Green Shield Lichen, Flavoparmelia caperata,
  27. Hammond’s Flycatcher, Empidonax hammondii
  28. Honey Fungus, Ringless Honey Fungus, Armarilla tabescens,
  29. House Wren, Troglodytes aedon,
  30. Jelly Spot Jelly Fungus, Dacrymyces chrysospermus,
  31. Mallard, Anas platyrhynchos,
  32. Miniature Lupine, Lupinus bicolor,
  33. Mourning Dove, Zenaida macroura,
  34. Mower’s Mushroom, Haymaker Mushroom, Panaeolus foenisecii,
  35. Nuttall’s Woodpecker, Picoides nuttallii,
  36. Painted Lady Butterfly, Vanessa cardui,
  37. Poison Oak, Pacific Poison Oak, Toxicodendron diversilobum,
  38. Rock Shield Lichen, Xanthoparmelia conspersa,
  39. Showy Milkweed, Asclepias speciose,
  40. Split Gill Fungus, Schizophyllum sp.
  41. Tree Swallow, Tachycineta bicolor,
  42. White Finger Slime Mold, Ceratiomyxa fruticulosa,
  43. White Horehound, Marrubium vulgare,
  44. Witches Butter Jelly Fungus, Tremella mesenterica,
  45. Wolf’s Milk Slime Mold, Lycogala epidendrum,
  46. Wrinkled Crust Fungus, Phlebia radiata

Fungus Walk with a CalNat Student, 02-24-19

Date: Sunday, February 24, 2019
Time: 8:00 am to 12:00 pm PST
Location: American River Bend Park, 2300 Rod Beaudry Dr, Sacramento, CA 95827
Habitat: Oak Woodland, Riparian, along the American River
Weather: 43° to 53°, overcast but not raining

Narrative: I’d scheduled a fungus walk at the American River Bend Park for my naturalist students with the understanding that even if no one wanted to come along, I’d still go on it myself. Students are allowed to use these extemporaneous walks I do (if they come along) as a substitute for a missed class or a missed field trip. The weather was chilly, but there was no rain.  I was joined by one of my male students, David D., who had never been to the park before – so it was all a new experience to him.

There weren’t as many different fungi out today as I was hoping there might be, but we did get to see some interesting specimens. We also saw some deer, several different species of birds, and got to see the early pipevine and manroot plants just starting to show themselves and bud out. David had fun climbing trees to get the photos he wanted, and was able to get quite a few really good close-ups with his cell phone.

We walked for about 4 hours before heading home.

CLICK HERE for the album of photos.

Species List:

1. Acorn Woodpecker, Melanerpes formicivorus
2. Belted Kingfisher, Megaceryle alcyon
3. Bewick’s Wren, Thryomanes bewickii
4. Black Jelly Roll fungus, Exidia glandulosa
5. Black Phoebe, Sayornis nigricans
6. Black-Tailed Jackrabbit, Lepus californicus
7. Brown Jelly Fungus, Tremella foliacea
8. California Black Walnut, Juglans californica
9. California Buckeye, Aesculus californica
10. California Pipevine, Dutchman’s Pipe, Aristolochia californica
11. California Scrub Jay, Aphelocoma californica
12. Canada Geese, Branta canadensis
13. Columbian Black-Tailed Deer, Odocoileus hemionus columbianus
14. Common Goldeneye, Bucephala clangula
15. Crust Fungus, Phlebia sp.
16. Crust Fungus, Stereum complicatum
17. Deer Shield Mushroom, Pluteus cervinus
18. Destroying Angel, Amanita ocreata
19. Dryad’s Saddle polypore fungus, Polyporus squamosus
20. Eastern Fox Squirrel, Sciurus niger
21. Elfin Saddle, False Morel, Helvella lacunosa
22. English Walnut, Juglans regia
23. False Turkey-Tail Fungus, Stereum hirsutum
24. Fremont’s Cottonwood, Populus fremontii
25. Great Egret, Ardea alba
26. Green Shield Lichen, common, Greenshield, Flavoparmelia caperata
27. Hoary Shield Lichen, Hoary Rosette Lichen, Physcia biziana
28. House Wren, Troglodytes aedon
29. Interior Live Oak, Quercus wislizeni
30. Lace Lichen, Ramalina menziesii, California State Lichen
31. Lemmon’s Rockcress, Boechera lemmonii
32. Manroot Vine, Bigroot, Wild Cucumber, Marah fabaceus
33. Miner’s lettuce, Narrow leaved miner’s lettuce, Claytonia parviflora
34. Mower’s Mushroom, Haymaker Mushroom, Panaeolina foenisecii
35. Mugwort, Artemisia vulgaris
36. Northern Flicker, Colaptes auratus, red-shafted
37. Nutthall’s Woodpecker, Picoides nuttallii
38. Oak Titmouse, Baeolophus inornatus
39. Oyster Mushroom, Pleurotus ostreatus
40. Red-Shouldered Hawk, Buteo lineatus
41. Red-Tailed Hawk, Buteo jamaicensis
42. Red-Tipped Photinia, Photinia × fraseri
43. Sunburst Lichen, Xanthoria parietina
44. Tiny unspecified Marasmius sp. Mushroom
45. Turkey-Tail Fungus, Trametes versicolor
46. Unidentified Russula sp. mushroom
47. Valley Oak, Quercus lobata
48. Western Bluebird, Sialia mexicana
49. Western Redbud, Cercis occidentalis
50. Western Tussock Moth, Orgyia vetusta, cocoons, pupal case
51. White Horehound, Marrubium vulgare
52. White-Breasted Nuthatch, Sitta carolinensis
53. Witch’s Butter, Golden Jelly Fungus, Tremella mesenterica
54. Yellow Fieldcap, Egg-Yolk Mushroom, Bolbitius vitellinus