Photos / Sounds

What

Korean Mulberry (Morus indica)

Observer

woochanseo

Date

June 18, 2024 04:04 PM KST

Photos / Sounds

What

Moreton Bay Fig (Ficus macrophylla)

Date

April 5, 2024 09:59 AM AEDT

Photos / Sounds

What

Valley Oak (Quercus lobata)

Observer

pleistocene

Date

August 2, 2020 04:43 PM PDT

Description

The Henley Oak, currently the tallest oak 153 feet [47 m]) known in North America

Photos / Sounds

What

Wanterlann (Tilia cordata)

Date

July 14, 2022 06:07 PM EEST

Photos / Sounds

What

Norfolk Island Pine (Araucaria heterophylla)

Observer

paulmc001

Date

March 19, 2024 02:21 PM AEDT

Description

Corellas eating seeds on Norfolk ? Pine

Photos / Sounds

What

Norfolk Island Pine (Araucaria heterophylla)

Observer

nataliast1

Date

April 13, 2024 10:16 PM -05

Photos / Sounds

Observer

sairus

Date

September 4, 2021 07:12 PM PDT

Photos / Sounds

What

Texas Live Oak (Quercus fusiformis)

Observer

brandtmagic

Date

April 14, 2024 12:35 PM MDT

Photos / Sounds

Observer

leytonjfreid

Date

April 5, 2024 06:23 PM PDT

Photos / Sounds

What

Shreve Oak (Quercus parvula var. shrevei)

Observer

pleistocene

Date

January 2024

Description

This seems to be the first documented occurrence in Ventura County.

9 trees, generally growing clonally from 1.5-3m wide multi-trunk base, up to 12 trunks, trees 6-14m in height, leaves >5cm, generally 6-9(12)cm, secondary leaf blade veins are raised abaxially, abaxial leaf midvein multiradiate trichomes are absent, acorns are annual. Growing alongside Quercus wislizeni and Quercus berberidifolia, with Q. parvula growing in the wettest portions of available habitat.

Photos / Sounds

What

Valley Oak (Quercus lobata)

Observer

rmoger

Date

March 27, 2024 03:51 PM PDT

Photos / Sounds

What

Asian Bayberry (Nageia nagi)

Observer

bgettler

Date

March 2, 2024 03:23 PM PST

Photos / Sounds

What

Asian Bayberry (Nageia nagi)

Observer

tlcube

Date

February 18, 2023 04:29 PM PST

Photos / Sounds

What

Ice-Cream-Bean (Inga edulis)

Observer

benjamin185

Date

March 13, 2024 02:56 PM PDT

Photos / Sounds

What

Figs (Genus Ficus)

Observer

malinda5

Date

August 12, 2019 10:20 AM PDT

Description

What in the world is this?

Photos / Sounds

What

Coast Redwood (Sequoia sempervirens)

Observer

bugs_not_drugs

Date

March 8, 2022 09:49 AM UTC

Photos / Sounds

What

False Cypress (Genus Chamaecyparis)

Observer

marleyi

Date

September 18, 2022 04:46 PM HST

Description

Cloud forest.

Photos / Sounds

What

Cypress Family (Family Cupressaceae)

Observer

mike_ross

Date

January 20, 2024 12:09 PM HST

Description

not from a root shoot

Photos / Sounds

What

Valley Oak (Quercus lobata)

Observer

asabspade

Date

December 4, 2021 01:06 PM PST

Photos / Sounds

What

White Oaks (Section Quercus)

Observer

ejmeyer

Date

August 7, 2023 01:58 PM PDT

Photos / Sounds

What

Red Oaks (Section Lobatae)

Observer

lilrobin

Date

January 11, 2024 01:52 PM PST

Photos / Sounds

Observer

leytonjfreid

Date

September 28, 2023 04:57 PM PDT

Photos / Sounds

What

Scrub × Valley Oak (Quercus berberidifolia × lobata)

Observer

suelindner

Date

January 1, 2024 11:18 AM PST

Photos / Sounds

What

California Bay (Umbellularia californica)

Observer

marivillasol

Date

January 1, 2024 03:43 PM PST

Description

Frickin amazing

Photos / Sounds

What

Dicots (Class Magnoliopsida)

Observer

walkers1144

Date

December 14, 2023 11:33 AM MST

Photos / Sounds

What

Mallows (Genus Malva)

Observer

deadhorz

Date

December 11, 2020 10:42 AM UTC

Photos / Sounds

What

Klinki Pine (Araucaria hunsteinii)

Observer

em_lamond

Date

November 2023

Photos / Sounds

Observer

emmashelton

Date

September 19, 2023 11:28 AM PDT

Description

That’s my guess. Like the one on Sunset Trail about 500 ft east. @jhigbie @sandy_b @lilyboy @nlogh3o I went to look because a friend thought it might be a Blue Oak. Note Disc Gall Wasp galls pics 6,7.

Photos / Sounds

What

Silverleaf Oak (Quercus hypoleucoides)

Observer

merav

Date

September 10, 2023 10:36 AM PDT

Photos / Sounds

Observer

norikonbu

Date

September 9, 2023 12:22 PM PDT

Photos / Sounds

What

Coast Live × Interior Live Oak (Quercus agrifolia × wislizeni)

Observer

norikonbu

Date

September 9, 2023 12:18 PM PDT

Photos / Sounds

What

Shumard's Oak (Quercus shumardii)

Observer

brandtmagic

Date

August 16, 2023 04:33 PM MDT

Description

UNM Arboretum. Unlabeled.

Photos / Sounds

What

Bunya Pine (Araucaria bidwillii)

Observer

saggital

Date

February 22, 2014 11:18 AM AEST

Photos / Sounds

Observer

romimarih

Date

July 22, 2023 08:38 AM PDT

Description

Coast or interior live oak ??

Photos / Sounds

What

Valley Oak (Quercus lobata)

Observer

joerich

Date

June 22, 2023 09:54 AM PDT

Description

This is the largest Valley Oak I think I have seen. It's girth at about 5 feet above the ground was about 17 feet.

Photos / Sounds

Observer

leytonjfreid

Date

June 19, 2023 03:44 PM PDT

Description

On tree 6' tall 2" wide. Leaves are blue, wavy, sharp, and leathery with hairs on both sided. SQ2

Photos / Sounds

What

Cook Pine (Araucaria columnaris)

Observer

milliebasden

Date

June 9, 2023 09:38 AM PDT

Photos / Sounds

What

Baldcypresses (Genus Taxodium)

Observer

philipfiorio

Date

June 7, 2023 11:19 AM PDT

Place

Lodi (Google, OSM)

Photos / Sounds

What

Bush Interior Live Oak (Quercus wislizeni var. frutescens)

Observer

jordanii

Date

June 2, 2023 05:47 PM PDT

Description

Young individual. Very interesting that the adaxial leaf surfaces were glaucus (as evidenced by my finger print!)

Photos / Sounds

What

White Oaks (Section Quercus)

Observer

despenia

Date

October 16, 2020 03:06 PM UTC

Place

Elk Grove (Google, OSM)

Photos / Sounds

What

Valley Oak (Quercus lobata)

Observer

gloriamowreader

Date

July 17, 2019 03:04 PM PDT

Photos / Sounds

What

Sky Lupine (Lupinus nanus)

Observer

jordanii

Date

May 7, 2023 02:29 PM PDT

Photos / Sounds

What

Eechen (Genus Quercus)

Observer

dsommer

Date

July 27, 2021 08:18 PM PDT

Photos / Sounds

What

Eechen (Genus Quercus)

Observer

mteeter

Date

May 5, 2023 05:31 PM PDT

Photos / Sounds

What

Fragrant Ash (Fraxinus cuspidata)

Observer

brandtmagic

Date

April 28, 2023 11:12 AM MDT

Photos / Sounds

What

Willows (Genus Salix)

Observer

armstrongid

Date

October 2, 2018 11:35 AM PDT

Description

Tree I can’t identify. Appr. 20-25’ tall. Looked like a fruit tree at first but also oak-like. Has leathery, undulating leaves.

Photos / Sounds

What

Cook Pine (Araucaria columnaris)

Observer

joel_melia

Date

July 23, 2022 11:59 AM HST

Photos / Sounds

What

Date Palm (Phoenix dactylifera)

Observer

jordanii

Date

January 22, 2023 04:31 PM PST

Photos / Sounds

What

Common Sow-Thistle (Sonchus oleraceus)

Observer

serpophaga

Date

January 18, 2023 09:36 AM PST

Description

Sonchus asper on left, S. oleraceus on right

Photos / Sounds

What

Norfolk Island Pine (Araucaria heterophylla)

Observer

dave_holland

Date

December 14, 2022 01:30 PM NZDT

Description

wild seedlings

Photos / Sounds

What

Norfolk Island Pine (Araucaria heterophylla)

Observer

ooo2

Date

March 18, 2022 09:40 AM -03

Photos / Sounds

What

Planes (Genus Platanus)

Observer

tryingtotree

Date

October 31, 2022 09:55 AM PDT

Description

Posting as a place holder. Studying planetrees around CP. Several of this variety planted near the softball fields. A few observations:

Trunk has a rougher more “barky” appearance as opposed to the typical papery kind.

Small fruit (button balls) present

Underside of leaves do not appear to be fuzzy

A quick search on google produced an image with similar bark labeled “oriental planetree”

Photos / Sounds

What

Southern Red Oak (Quercus falcata)

Observer

tobo

Date

May 26, 2018 10:47 AM PDT

Photos / Sounds

What

Island Oak (Quercus tomentella)

Observer

nicholasmallonee

Date

December 10, 2022 02:30 PM PST

Photos / Sounds

Observer

sniravanh

Date

August 22, 2021 07:47 PM PDT

Photos / Sounds

What

Gold Medallion Tree (Cassia leptophylla)

Observer

sharkiebob

Date

August 11, 2019 03:17 PM PDT

Photos / Sounds

What

Red Oaks (Section Lobatae)

Observer

irishtim

Date

October 20, 2022 08:44 AM PDT

Photos / Sounds

What

Cook Pine (Araucaria columnaris)

Observer

vaibhavdwivedi

Date

May 2022

Place

Hawaii, US (Google, OSM)

Photos / Sounds

What

Swamp White Oak (Quercus bicolor)

Observer

hllrnnr

Date

May 12, 2022 03:22 PM PDT

Photos / Sounds

What

Shagbark Hickory (Carya ovata)

Observer

merlinarborist

Date

August 26, 2021 11:05 AM PDT

Photos / Sounds

What

Figs (Genus Ficus)

Observer

emilg

Date

September 26, 2018 02:23 PM PDT

Photos / Sounds

What

Watkins' Fig (Ficus watkinsiana)

Observer

lucymauroff

Date

September 26, 2018 02:23 PM PDT

Photos / Sounds

What

East African Yellowwood (Afrocarpus gracilior)

Observer

bvr

Date

June 15, 2021 04:23 PM SAST

Description

Comparison leaves and seeds of the A.gracilior left and the A.facatus right. The seed of the A.gracilior right. The A.gracilior is coming from the Tokai Arboretum. The last four pics show the trees with the seed and old seed under the tree.

Photos / Sounds

What

African Yellowwoods (Genus Afrocarpus)

Observer

bvr

Date

September 30, 2021 03:59 PM SAST

Description

Stones of the Afrocarpus falcatus (bottom) and A.gracilior (top) on 1/4 & 2/4; A.falcatus on 3/4 & A.gracilior on 4/4. Seeds not photographed. For fruits:
See inaturalist.org/observations/94099487.

Photos / Sounds

What

Figs (Genus Ficus)

Observer

ftwigg

Date

November 21, 2020 11:40 PM UTC

Photos / Sounds

What

Norfolk Island Pine (Araucaria heterophylla)

Observer

birdingislife

Date

July 23, 2019 10:26 PM SAST

Photos / Sounds

What

East African Yellowwood (Afrocarpus gracilior)

Observer

fibanda

Date

April 28, 2019 02:38 PM +03

Photos / Sounds

What

Subconvex Oak (Quercus × subconvexa)

Observer

arbonius

Date

February 1, 2022 11:39 AM PST

Description

Our botanical hiking group was intrigued by the many conspicuously yellowed-but-persistent leaves on this "late deciduous" oak. (Perhaps "partially deciduous" would be a better phrase here...as there were also many green leaves still attached on this nearly mid-winter Feb 1st date.) There were many other deciduous oaks in the local area (presumably many were Q. lobata, and some Q. douglasii)...but they had all completely dropped their leaves by this time.

The intermediate evergreen/deciduous behavior here, together with leaf characters (i.e. lobing, somewhat shiny upper surface, paler lower surface, vestiture, etc.) suggested this was a hybrid of a deciduous and an evergreen pair of parent species in the "white oak group" (Quercus sect. Quercus). We were thinking perhaps Q. douglasii and one of the local scrub oaks (i.e. Q. berberidifolia or Q. durata). Later, @joergmlpts referred me to this nearby iNat obs...which appears as if it may actually be the same exact tree we saw. And there's also this similar-looking iNat obs 38209307 from very nearby. Both those observations were placed as Q. douglasii...but the observers indicated they suspected they were hybrids of Q. douglasii crossed with a scrub oak.

On researching things in the days after our visit, I found a likely candidate: Quercus x subconvexa. It was described by John Tucker in 1953 as a hybrid of Q. garryana (Oregon Oak) and Q. durata (Leather Oak)...both of which are vouchered from the area (indeed Tucker found individuals of each nearby). The agreement is excellent(!) between this oak and the many details of Tucker's description & extended discussion of Q. x subconvexa. Of particular note, diagnostically, are: 1) the lobing pattern of the leaves...each lobe with a short, sharp mucro at its tip; 2) the vestiture of the leaves (uniformly-densely distributed long-rayed stellate hairs abaxially vs. more isolated & widely-scattered tiny clumps of tightly-tufted short-rayed hairs adaxially); as well as the partial deciduousness and paucity/apparent lack of acorns.

And, intriguingly, this site appears to by quite near (and perhaps is! ) the type locality for Q. x subconvexa...which was described as a "north slope, elev. 1300 feet" (compare with topo map link here) and "approximately 5 miles north-northeast of Gilroy". I checked on Google Earth and the spot here fits the bill extremely well. Note also that all Tucker's many vouchers listed here are from the same locality (though the coords given there, 37.072628 -121.532169, appear a bit off...as they indicate a point in an open grassy area on a southwest-facing slope, about 750' to the south of the location of this observation). As seen in the 7th photo here, this observation is just north of two park benches and an interpretive sign along the Mummy Mountain Trail.

The strong fit between critical features of this oak with those discernible in photos accompanying 19 of Tucker's vouchers at the preceding SEINet link (see also here)...as well as the agreement with a preponderance of the many details in the nicely written paper Tucker(1953)... have me fairly-well convinced of the ID here.

---Comments on Individual Photos of the Series---

2nd Photo: Thumbnail is 16 mm wide. Together with Photos 8-10 here, one gets a sense of the relatively large size of the leaves here...presumably reflective of parentage from the relatively large-leaved species Q. garryana.

6th Photo: Tree-like habitus of Q. x subconvexa at center of photo (it looks like a 2nd smaller individual may also be present to the right).

8th Photo: Abaxial side is shown in the two duller leaves still attached to the twig (at upper right-center & at lower right ); and also for the detached leaf at lower left...all other leaves here exhibit the shinier adaxial side.

9th Photo: View of adaxial (upper) side, with mm scale.

10th Photo: View of abaxial (lower) side, with mm scale.

11th Photo: Pale abaxial side at left vs. shinier adaxial side at right.

12th & 13th photos show detail of abaxial sides. Though it's difficult to make out in the photos (but much better discerned under a well-lit stereo-view dissecting microscope), the abaxial hairs here are somewhat dense and "stellate". In particular, most these stellate hairs had 5-7 relatively-long & straight rays...each ray centrally-attached to the base of the (compound) hair and radiating outward & slightly upward. The attachment of the rays was visually very subtle to perceive under a stereo-view dissecting scope at 40X magnification and could easily be overlooked. I wasn't able to discern it with a hand lens.

Photos / Sounds

What

Eechen (Genus Quercus)

Observer

antrozousamelia

Date

July 4, 2018 06:42 PM PDT

Description

? Maybe ?

Photos / Sounds

What

Island Oak (Quercus tomentella)

Observer

marivillasol

Date

August 2019

Description

Grandmother Oak up on Soledad Ridge. Don't step on her roots.

Photos / Sounds

What

Red Oaks (Section Lobatae)

Observer

coolkat

Date

December 30, 2021 04:08 PM UTC

Photos / Sounds

What

Jolon Oak (Quercus × jolonensis)

Observer

norikonbu

Date

December 27, 2021 01:17 PM UTC

Photos / Sounds

What

Dicots (Class Magnoliopsida)

Observer

patricia111

Date

September 16, 2021 09:37 AM MST

Photos / Sounds

What

Red Oaks (Section Lobatae)

Observer

arbonius

Date

September 28, 2021 10:52 AM PDT

Description

Goodly trip leader Sandy led a group of us to this interesting oak, which had been anticipated to be an instance of "Oracle Oak", also known as Quercus × morehus...considered a hydrid of Q. kelloggii [Jeps; FNA] and Q. wislizeni(i) [Jeps; FNA]. This seemed a reasonable putative ID to me, as the leaves & acorns appeared intermediate between what I thought of as "typical" characters of the presumed hybrid's parents...both of which appeared to be present nearby (though what I was taking as Q. wislizeni is apparently better considered as Q. parvula var. shrevei...more on that below).

For instance, the leaves are mostly planar & elliptic (noticeably longer than wide) and completely glabrous with a dull, lighter green color below, as in Q. wislizeni (and Q. parvula). But they also have bristle-tipped teeth at the tips of their shallow and somewhat regularly-spaced lobes...which seemed to me a plausible indication of Q. kelloggii parentage. Note also that Q. kelloggii is deciduous whereas Q. wislizeni is evergreen (as is Q. parvula var. shrevei)...and, as an intermediate trait, the hybrid Q. × morehus typically exhibits appreciable yellowing & loss of leaves during winter. Sandy noted there was no clear indication of any deciduous leaves during our visit...but perhaps if we checked again in January or February this might be apparent?

Also, the acorns appear to have their cap scales extending quite far down and enveloping much of the nut...which seems an affinity with Q. kelloggii (e.g. cf. images here, here, and here). Acorns of Q. parvula var. shrevei appear here. Then again, the fraction of the acorn nut covered by cap scales presumably depends on the growth stage of the acorn, and perhaps also impacts on acorn nut growth due to insect interactions, pathogens, and other physiological stressors.

And with oaks, it seems that various leaf, acorn, and other characters can be remarkably variable within populations of a given species (or even within an individual!).

Much interesting info on Q. × morehus can be found in Tom Chester's write-up here relating to occurrences in the San Jacinto Mountains of southern CA — including an image of the brief original 1863 description by Kellogg; a discussion of the possible meaning of the epithet "morehus" as well as the common name "Oracle Oak"...and more. Another (older) discussion of "Q. Morehus" can be found on pp. 46–49 of the 1910 "The Silva of California" by W. L. Jepson. And there's a Q. × morehus Wikipedia page with a line drawing and further references. (One such detailed reference cited there, Wolf(1938), can be read by scrolling through pp. 47-51 at this link.)

Per the current Jepson eFlora treatment, the native CA species of "Red" or "Black" Oaks (= Quercus Section Lobatae) are: Q. agrifolia, Q. kelloggii, Q. wislizeni, and Q. parvula (the latter having 3 varieties — Q. parvula var. shrevei being the one occurring in the Santa Cruz Mountains; with the nominate variety occurring in the Channel Islands and areas of adjacent southern CA; and var. tamalpaisensis localized on Mt. Tamalpais in Marin Co.). [Note that the FNA treatment of Quercus synonymized Q. parvula under Q. wislizenii...which is a potential source of confusion in terms of which authority people may be following when they attach a name to a particular 'oak entity' of interest. But such issues are always present...albeit often unspoken & in the background.]

Note that the initial lead of "couplet 1" in the Jepson eFlora Key to Quercus separates out the "red/black oaks"...that is, the thin acorn cup scales here are enough to get us to the Section Lobatae. But beyond there the key becomes ambiguous for the material here.

When we visited this particular tree, I had been taking to heart the FNA synonymy of Q. parvula under Q. wislizeni...but now, after studying things further, I better appreciate my lack of a clear understanding for the subtle complexities involved in attaching an optimally informative name here! While oak taxonomy is notoriously difficult and differences of opinion exist, clearly there are experts who have long studied oaks and have great expertise in the subject and see merit in recognizing Q. parvula...and in particular, Q. parvula var. shrevei in the Santa Cruz Mountains. Sandy was fortunate to have Al Keuter comment on her post of this tree, and Al suggested that perhaps this might be better referred to as Q. × 'wootteni'...a (not yet formally described?) putative hybrid of Q. kelloggii and Q. parvula var. shrevei. The only mention I could find online for Q. × 'wootteni' was in the key to CA members of Quercus section Lobatae, series Agrifoliae, appearing in the appendix at the end of the 2017 paper:

The evolution and diversification of the red oaks of the California Floristic Province (Quercus section Lobatae, series Agrifoliae)

...of which Al is a co-author.

There are abundant individuals of both Q. kelloggii and what I believe are considered Q. parvula var. shrevei in the vicinity of the oak in this post.