Photos / Sounds

Observer

lamawebber

Date

April 15, 2022 08:03 PM PDT

Description

Shionodiscus trifultus (Fryxell) Alverson, Kang &
Theriot (Figs 17–21)
Basionym: Thalassiosira trifulta G. Fryxell in Fryxell & Hasle (Plate 12, Table 15)
Fryxell & Hasle, 1979, p. 16, Figs. 1-24.
Girdle view: Cells 16-58 μm in diameter. GI = 32.1 µm (n= 1)
Pervalvar axis shorter than cell diameter. Valve face flat. Mantle evenly rounded. No observations on chain formation.
Valve view:
Valves often coarsely silicified. GI specimen is less silicified then the images in Wilks and Armand (2017: Fig. 18, 20). Areolae in straight or slightly curved tangential rows. Five to seven areolae in 10 μm at the centre. GI = 8-9. Areolae are 9.5–10 at the margin. GI = 10. One to eight trifultate strutted processes in valve center in one or two lines (Hasle and Syvertsen, 1996). GI = 4. Labiate process mostly closer to valve mantle than to valve center(?) (Hasle and Syvertsen, 1996). Labiate process 7 or 9 areolae from CPSs (central strutted processes) on large valves. GI= 10 areolae from central process. Labiate process 12–14.3 μm from CPSs. GI = 12.6 µm between closest CSP and labiate process (n=1).
Marginal strutted processes are 4–4.8 μm apart. GI = 4 µm apart. (Fryxell & Hasle, 1979, Hasle and Syvertsen, 1996: pl. 13, p. 81, p. 82, Wilks and Armand 2017)

Methods:
From a general plankton tow with a 20 µm mesh net at Spanish Hills Wharf, Trincomali Channel, Galiano Island, BC, Canada, on April 15, 2022. After 4% formalin fixation, cells were cleaned with concentrated nitric acid at 95-99 degrees centigrade for 1.5 hrs. Cooled and rinsed of salts with distilled and deionized water until a pH of 6.5. Pipetted onto 13 mm grooved aluminum SEM stubs. SEM imaging with a Hitachi TM4000 at the Advanced Microscope Facility, UVIC. Thank you Hitachi HiTech and Elaine Humphrey for SEM support.

References:

Alverson, A.J., Kang, S.-H. & Theriot, E.C. (2006). Cell wall morphology and systematic importance of Thalassiosira ritscheri (Hustedt) Hasle, with a description of Shionodiscus gen. nov. Diatom Research 21(2): 215-262.

Fryxell, G. A., & Hasle, G. R. 1979b. The genus Thalassiosira: T. trifulta sp. nova and other species with tricolumnar supports on strutted processes. Beiheft zur Nova Hedwigia 64:13-32.

Hasle, G.R. & Syvertsen, E.E. (1996). Marine Diatoms. In: Identifying Marine Phytoplankton. (Tomas, C.R. Eds). San Diego: Academic Press.

Guiry, M.D. & Guiry, G.M. 2007, AlgaeBase version 4.2. World-wide electronic publication, National University of Ireland, http://algaebase.org, searched Nov 26, 2022.

Li, Y. and Lu, S. (2013). The genus Thalassiosira off the Guangdong coast, South China Sea. Botanica Marina; 56(1): 83–110. DOI: 10.1515/bot-2011-0045

Wilks, J. V. and Armand, L. K. (2017): Diversity and taxonomic identification of Shionodiscus spp. in the Australian sector of the Subantarctic Zone, Diatom Research, DOI: 10.1080/0269249X.2017.1365015

Shionodiscus trifultus - Photo (c) Mark Webber, some rights reserved (CC BY-NC), uploaded by Mark Webber
chlorophilia's ID: Shionodiscus trifultus, a member of Diatoms (Class Bacillariophyceae)
Added on December 03, 2022
Leading

Photos / Sounds

What

Peas, Vetches, and Allies (Tribe Fabeae)

Observer

johndreynolds

Date

June 25, 2022 01:37 PM PDT

Description

Ruxton Island, Gulf Islands, BC, Canada

American Vetch - Photo (c) Michael Dawber, all rights reserved, uploaded by Michael Dawber
chlorophilia's ID: American Vetch (Vicia americana)
Added on December 01, 2022
Leading

Photos / Sounds

Observer

lamawebber

Date

July 15, 2022 02:15 PM PDT

Description

Shionodiscus oestrupii

Shionodiscus oestrupii (either variety oestrupii (Ostenfeld)
or var. venrickae (Fryxell & Hasle)
Previously, Thalassiosira oestrupii (Ostenfeld) Hasle.
Basionym: Coscinosira oestrupii Ostenfeld.
Phylum: Bacillariophycophyta, Subphylum: Bacillariophytina, Class: Mediophyceae, Order: Thalassiosirales, Family: Thalassiosiraceae.

Girdle view:
7-39 µm in diameter, GI = 21.7 - 23.9 (n = 2), Pervalvar axis half to twice the diameter. Valve face flat or slightly convex. Mantle low and rounded. Valvocopula striated. Cells in chains united by a thread from the central strutted process. Valve view: Areolae usually larger in central part of valve than closer to
the margin, sometimes in sublinear array. One nearly central strutted process. Labiate process usually one or two areolae distant (up to four), GI is 3-4 areolae from the central process. 6–11 areolae in 10 μm at valve center, GI = 9 areolae in 10 µm. 3 µm between marginal processes, or 3-4 marginal processes in 10 µm = GI. Remarks: Thalassiosira oestrupii var. venrickae G. Fryxell & Hasle is
distinguished from T. oestrupii var. oestrupii by a distinct eccentric areola
pattern and by more widely separated marginal processes. The labiate as
well as the strutted processes are discernible with LM (Fryxell & Hasle,
1980, Hasle and Syvertsen, 1996: pl. 13, p. 81, p. 82, Wilks and Armand 2017)

Methods:
From a general plankton tow (20 µm net) in Georgia Strait, Galiano Island, BC, Canada, on July 15, 2022. After 4% formalin fixation, cells were cleaned with concentrated nitric acid on 12 mm glass coverslips and rinsed in distilled water deionized water. Mounted with double sided taper to 13 mm aluminum SEM stubs. Thank you Kevin Fraser for providing a sampling opportunity with his boat. SEM imaging by Ron Read with a Hitachi s4800 at the Advanced Microscope Facility, UVIC. Thank you Elaine Humphrey for SEM support.

References:

Alverson, A.J., Kang, S.-H. & Theriot, E.C. (2006). Cell wall morphology and systematic importance of Thalassiosira ritscheri (Hustedt) Hasle, with a description of Shionodiscus gen. nov. Diatom Research 21(2): 215-262.

Fryxell, G. A., & Hasle, G. R. (1980). The marine diatom Thalassiosira oestrupii" Structure, taxonomy and distribution. American Journal of Botany 67:804-814.

Hasle, G.R. & Syvertsen, E.E. (1996). Marine Diatoms. In: Identifying Marine Phytoplankton. (Tomas, C.R. Eds). San Diego: Academic Press.

Guiry, M.D. & Guiry, G.M. 2007, AlgaeBase version 4.2. World-wide electronic publication, National University of Ireland, http://algaebase.org, searched Nov 26, 2022.

Li, Y. and Lu, S. (2013). The genus Thalassiosira off the Guangdong coast, South China Sea. Botanica Marina; 56(1): 83–110. DOI: 10.1515/bot-2011-0045

Wilks, J. V. and Armand, L. K. (2017): Diversity and taxonomic identification of Shionodiscus spp. in the Australian sector of the Subantarctic Zone, Diatom Research, DOI: 10.1080/0269249X.2017.1365015

Shionodiscus oestrupii - Photo (c) Mark Webber, some rights reserved (CC BY-NC), uploaded by Mark Webber
chlorophilia's ID: Shionodiscus oestrupii, a member of Diatoms (Class Bacillariophyceae)
Added on November 27, 2022
Leading

Photos / Sounds

Observer

lamawebber

Date

June 25, 2022 02:07 PM PDT

Description

Shionodiscus oestrupii

Shionodiscus oestrupii (either variety oestrupii (Ostenfeld)
or var. venrickae (Fryxell & Hasle)
Previously, Thalassiosira oestrupii (Ostenfeld) Hasle.
Basionym: Coscinosira oestrupii Ostenfeld.
Phylum: Bacillariophycophyta, Subphylum: Bacillariophytina, Class: Mediophyceae, Order: Thalassiosirales, Family: Thalassiosiraceae.

Girdle view:
7-39 µm in diameter, GI = 21.7 - 23.9 (n = 2), Pervalvar axis half to twice the diameter. Valve face flat or slightly convex. Mantle low and rounded. Valvocopula striated. Cells in chains united by a thread from the central strutted process. Valve view: Areolae usually larger in central part of valve than closer to
the margin, sometimes in sublinear array. One nearly central strutted process. Labiate process usually one or two areolae distant (up to four), GI is 3-4 areolae from the central process. 6–11 areolae in 10 μm at valve center, GI = 9 areolae in 10 µm. 3 µm between marginal processes, or 3-4 marginal processes in 10 µm = GI. Remarks: Thalassiosira oestrupii var. venrickae G. Fryxell & Hasle is
distinguished from T. oestrupii var. oestrupii by a distinct eccentric areola
pattern and by more widely separated marginal processes. The labiate as
well as the strutted processes are discernible with LM (Fryxell & Hasle,
1980, Hasle and Syvertsen, 1996: pl. 13, p. 81, p. 82, Wilks and Armand 2017)

New report for the Salish Sea. Reported off the West Coast of Vancouver Island by Hay et al. 2003.

Methods:
From a general plankton tow at Chivers Pt., Wallace Island, Trincomali Channel, BC, Canada, on June 25, 2022. After 4% formalin fixation, cells were cleaned with concentrated nitric acid on 12 mm glass coverslips and rinsed in distilled water deionized water. Mounted with double sided taper to 13 mm aluminum SEM stubs. Thank you to Andrew Simon of IMERSS for collecting the sample. SEM imaging with a Hitachi TM4000 at the Advanced Microscope Facility, UVIC. Thank you Hitachi HiTech and Elaine Humphrey for SEM support.

References:

Alverson, A.J., Kang, S.-H. & Theriot, E.C. (2006). Cell wall morphology and systematic importance of Thalassiosira ritscheri (Hustedt) Hasle, with a description of Shionodiscus gen. nov. Diatom Research 21(2): 215-262.

Fryxell, G. A., & Hasle, G. R. (1980). The marine diatom Thalassiosira oestrupii" Structure, taxonomy and distribution. American Journal of Botany 67:804-814.

Guiry, M.D. & Guiry, G.M. 2007, AlgaeBase version 4.2. World-wide electronic publication, National University of Ireland, http://algaebase.org, searched Nov 26, 2022.

Hasle, G.R. & Syvertsen, E.E. (1996). Marine Diatoms. In: Identifying Marine Phytoplankton. (Tomas, C.R. Eds). San Diego: Academic Press.

Hay, M. B., Pienitz, R., and Thomson, R.E. (2003). Distribution of diatom surface sediment assemblages within Effingham Inlet, a temperate fjord on the west coast of Vancouver Island (Canada). , 48(3-4), 291–320. doi:10.1016/s0377-8398(03)00025-2

Li, Y. and Lu, S. (2013). The genus Thalassiosira off the Guangdong coast, South China Sea. Botanica Marina; 56(1): 83–110. DOI: 10.1515/bot-2011-0045

Wilks, J. V. and Armand, L. K. (2017): Diversity and taxonomic identification of Shionodiscus spp. in the Australian sector of the Subantarctic Zone, Diatom Research, DOI: 10.1080/0269249X.2017.1365015

Shionodiscus oestrupii - Photo (c) Mark Webber, some rights reserved (CC BY-NC), uploaded by Mark Webber
chlorophilia's ID: Shionodiscus oestrupii, a member of Diatoms (Class Bacillariophyceae)
Added on November 27, 2022
Leading

Photos / Sounds

Observer

jackson_chu

Date

October 3, 2009 06:32 AM PDT

Tags

Grimothea quadrispina - Photo (c) smithsonian_marinegeo, some rights reserved (CC BY-NC-SA), uploaded by smithsonian_marinegeo
chlorophilia's ID: Grimothea quadrispina, a member of Munidid Squat Lobsters (Family Munididae)
Added on November 16, 2022
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Juniper Haircap Moss (Polytrichum juniperinum)

Observer

jazminbrewer

Date

April 6, 2022 02:36 PM PDT
Juniper Haircap Moss - Photo (c) Carlos G Velazco-Macias, some rights reserved (CC BY-NC), uploaded by Carlos G Velazco-Macias
chlorophilia's ID: Juniper Haircap Moss (Polytrichum juniperinum)
Added on November 01, 2022
Supporting

Photos / Sounds

What

Alumroot Tribe (Tribe Heuchereae)

Observer

iancruickshank

Date

August 19, 2017 05:59 PM PDT
Alpine Mitrewort - Photo (c) Gordon Neish, some rights reserved (CC BY-NC), uploaded by Gordon Neish
chlorophilia's ID: Alpine Mitrewort (Pectiantia pentandra)
Added on November 01, 2022
Leading
Added as part of a taxon swap

Photos / Sounds

What

Alpine Mitrewort (Pectiantia pentandra)

Observer

bstarzomski

Date

August 2, 2020 11:19 AM PDT
Alpine Mitrewort - Photo (c) Gordon Neish, some rights reserved (CC BY-NC), uploaded by Gordon Neish
chlorophilia's ID: Alpine Mitrewort (Pectiantia pentandra)
Added on November 01, 2022
Improving
Added as part of a taxon swap

Photos / Sounds

What

Alpine Mitrewort (Pectiantia pentandra)

Observer

bstarzomski

Date

August 2, 2020 10:35 AM PDT
Alpine Mitrewort - Photo (c) Gordon Neish, some rights reserved (CC BY-NC), uploaded by Gordon Neish
chlorophilia's ID: Alpine Mitrewort (Pectiantia pentandra)
Added on November 01, 2022
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Alpine Mitrewort (Pectiantia pentandra)

Observer

bstarzomski

Date

August 2, 2020 09:53 AM PDT
Alpine Mitrewort - Photo (c) Gordon Neish, some rights reserved (CC BY-NC), uploaded by Gordon Neish
chlorophilia's ID: Alpine Mitrewort (Pectiantia pentandra)
Added on November 01, 2022
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Alpine Mitrewort (Pectiantia pentandra)

Observer

bstarzomski

Date

August 2, 2020 08:52 AM PDT
Alpine Mitrewort - Photo (c) Gordon Neish, some rights reserved (CC BY-NC), uploaded by Gordon Neish
chlorophilia's ID: Alpine Mitrewort (Pectiantia pentandra)
Added on November 01, 2022
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Brewer's Mitrewort (Brewerimitella breweri)

Observer

citizen1

Date

August 26, 2020 10:31 AM PDT
Brewer's Mitrewort - Photo (c) Dan and Raymond, some rights reserved (CC BY-NC-SA)
chlorophilia's ID: Brewer's Mitrewort (Brewerimitella breweri)
Added on November 01, 2022
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Brewer's Mitrewort (Brewerimitella breweri)

Observer

dccopley

Date

July 15, 2020 12:47 PM PDT
Brewer's Mitrewort - Photo (c) Dan and Raymond, some rights reserved (CC BY-NC-SA)
chlorophilia's ID: Brewer's Mitrewort (Brewerimitella breweri)
Added on November 01, 2022
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Coastal Miterwort (Brewerimitella ovalis)

Observer

iancruickshank

Date

August 13, 2019 05:21 PM PDT
Coastal Miterwort - Photo (c) 2011 Zoya Akulova, some rights reserved (CC BY-NC)
chlorophilia's ID: Coastal Miterwort (Brewerimitella ovalis)
Added on November 01, 2022
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Sea Lettuces (Genus Ulva)

Observer

rileycam

Date

June 12, 2021 05:16 PM PDT
Ulva fenestrata - Photo (c) Rosa Laucci, some rights reserved (CC BY-NC), uploaded by Rosa Laucci
chlorophilia's ID: Ulva fenestrata, a member of Sea Lettuces (Genus Ulva)
Added on October 30, 2022
Leading

Photos / Sounds

What

Broadleaf Sea Lettuce (Ulva lactuca)

Observer

svpym

Date

July 13, 2022 01:37 PM PDT
Sea Lettuces - Photo (c) Kristian Peters, some rights reserved (CC BY-NC-SA)
chlorophilia's ID: Sea Lettuces (Genus Ulva)
Added on October 30, 2022
Improving

Photos / Sounds

What

Rockweed (Fucus distichus)

Observer

lu_naftel

Date

November 17, 2021 08:13 PM UTC
Rockweed - Photo (c) Steve Sullivan, some rights reserved (CC BY-NC-SA)
chlorophilia's ID: Rockweed (Fucus distichus)
Added on October 30, 2022
Supporting

Photos / Sounds

What

Rockweed (Fucus distichus)

Observer

gabe_schp

Date

July 18, 2022 10:24 AM PDT
Rockweed - Photo (c) Steve Sullivan, some rights reserved (CC BY-NC-SA)
chlorophilia's ID: Rockweed (Fucus distichus)
Added on October 30, 2022
Supporting

Photos / Sounds

What

Rockweed (Fucus distichus)

Observer

svpym

Date

July 13, 2022 01:48 PM PDT
Rockweed - Photo (c) Steve Sullivan, some rights reserved (CC BY-NC-SA)
chlorophilia's ID: Rockweed (Fucus distichus)
Added on October 30, 2022
Supporting

Photos / Sounds

Observer

jbindernagel

Date

October 15, 2022 03:37 PM PDT
Platismatia lacunosa - Photo (c) M. Goff, some rights reserved (CC BY-NC-SA), uploaded by M. Goff
chlorophilia's ID: Platismatia lacunosa, a member of Shield Lichens and Allies (Family Parmeliaceae)
Added on October 29, 2022
Supporting

Photos / Sounds

Observer

martybc

Date

November 9, 2017
Ichneumonina - Photo (c) C. Mallory, some rights reserved (CC BY-NC), uploaded by C. Mallory
chlorophilia's ID: Subtribe Ichneumonina, a member of Ichneumonid Wasps (Family Ichneumonidae)
Added on October 22, 2022
Leading
Added as part of a taxon swap

Photos / Sounds

What

Common Ramping-Fumitory (Fumaria muralis)

Observer

kevintoo

Date

June 15, 2022 09:08 AM PDT
Martin's Ramping-Fumitory - Photo Javier martin, no known copyright restrictions (public domain)
chlorophilia's ID: Martin's Ramping-Fumitory (Fumaria reuteri)
Added on October 15, 2022
Maverick

Photos / Sounds

What

Grasses (Family Poaceae)

Observer

catiemac

Date

January 14, 2022 03:58 PM HST
Grasses - Photo (c) Konstantin Romanov, some rights reserved (CC BY-NC), uploaded by Konstantin Romanov
chlorophilia's ID: Grasses (Family Poaceae)
Added on October 15, 2022
Improving

Photos / Sounds

Observer

galianobserver

Date

May 5, 2019 11:37 AM PDT
Bolinopsis microptera - Photo anonymous, no known copyright restrictions (public domain)
chlorophilia's ID: Bolinopsis microptera, a member of Lobate Comb Jellies (Order Lobata)
Added on October 15, 2022
Supporting
Added as part of a taxon split

Photos / Sounds

What

Yellow-Fronted Bumble Bee (Bombus flavifrons)

Observer

gabe_schp

Date

July 18, 2022 11:04 AM PDT
Yellow-Fronted Bumble Bee - Photo (c) Don Sutherland, some rights reserved (CC BY-NC), uploaded by Don Sutherland
chlorophilia's ID: Yellow-Fronted Bumble Bee (Bombus flavifrons)
Added on October 09, 2022
Supporting

Photos / Sounds

What

Common Bracken (Pteridium aquilinum)

Observer

laurus_nobilis

Date

November 30, 2014
Hairy Brackenfern - Photo (c) Zach Hawn, some rights reserved (CC BY-NC-SA), uploaded by Zach Hawn
chlorophilia's ID: Hairy Brackenfern (Pteridium aquilinum var. pubescens)
Added on October 09, 2022
Leading

Photos / Sounds

What

Pacific Willow Dock (Rumex transitorius)

Observer

laurus_nobilis

Date

August 28, 2015
Pacific Willow Dock - Photo (c) baldeaglevet, all rights reserved, uploaded by baldeaglevet
chlorophilia's ID: Pacific Willow Dock (Rumex transitorius)
Added on October 09, 2022
Supporting

Photos / Sounds

What

Canada Sand-Spurry (Spergularia canadensis)

Observer

gabe_schp

Date

July 8, 2022 01:56 PM PDT
Western Sand-Spurrey - Photo (c) Bill Rodstrom, some rights reserved (CC BY-NC), uploaded by Bill Rodstrom
chlorophilia's ID: Western Sand-Spurrey (Spergularia canadensis var. occidentalis)
Added on October 09, 2022
Leading

Photos / Sounds

What

Common Snowberry (Symphoricarpos albus)

Observer

johndreynolds

Date

May 4, 2019 10:56 AM PDT

Description

Bellhouse Provincial Park, Galiano Island

Garden Snowberry - Photo (c) James Gaither, some rights reserved (CC BY-NC-ND)
chlorophilia's ID: Garden Snowberry (Symphoricarpos albus var. laevigatus)
Added on October 09, 2022
Leading

Photos / Sounds

What

Wholeleaf Saxifrage (Micranthes integrifolia)

Observer

caitlin135

Date

April 1, 2022 03:33 PM PDT
Wholeleaf Saxifrage - Photo (c) David Hofmann, some rights reserved (CC BY-NC-ND)
chlorophilia's ID: Wholeleaf Saxifrage (Micranthes integrifolia)
Added on October 09, 2022
Improving

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