Specimens are grouped into orders following Guiry and Guiry (2019) and Wehr et al. (2015).
Zygnematales
The unicellular forms of Zygnematales are known as
saccoderm desmids (Graham et al. 2009).
Cylindrocystis
1. Cylindrocystis
![image](../gallery_images/zygnematophyceans/Cylindrocystis_j79-5a_402z_h_ec_small.jpg)
800x
Rice Lake marsh #2
aquatic plant sample
8/7/10
pH 7.4, 21°C, 80 uS
2. Cylindrocystis
![image](../gallery_images/zygnematophyceans/Cylindrocystis_n2-1_402_small.jpg)
800x
Perrault Bog
plant detritus sample
9/13/05
pH 5.1, 22.2°C
Mesotaenium
1. Mesotaenium
![image](../gallery_images/zygnematophyceans/Mesotaenium_n15a-17_402_small.jpg)
800x
Rice Lake from northern shore
aquatic plant sample
9/27/05
20°C
2. Mesotaenium
![image](../gallery_images/zygnematophyceans/Mesotaenium_p4-3_402_small.jpg)
800x
Perrault Bog
surface plankton tow
6/19/07
19.5°C
Mougeotia
1. Mougeotia
![image](../gallery_images/zygnematophyceans/Mougeotia_n17-3_20125_ec_small.jpg)
250x
Traverse River at Mohawk-Gay Rd
aquatic plant sample
9/27/05
19.5°C
2. Mougeotia
![image](../gallery_images/zygnematophyceans/Mougeotia_n17-2_20125_ec_small.jpg)
250x
same as above
3. Mougeotia
![image](../gallery_images/zygnematophyceans/Mougeotia_j16-21_4016_ec_small.jpg)
640x
Arnheim Sloughs site #2
aquatic plant sample
5/27/10
22°C
4. Mougeotia
![image](../gallery_images/zygnematophyceans/Mougeotia_p17-1a_20125_ec_small.jpg)
250x
![image](../gallery_images/zygnematophyceans/Mougeotia_p17-1_40125_ec_small.jpg)
500x
pond east of Huron Lake
aquatic plant sample
10/16/07
5. Mougeotia
![image](../gallery_images/zygnematophyceans/Mougeotia_j55-12_402z_h_small.jpg)
800x
Snowmobile Trail 17 marsh #3
aquatic plant sample
7/15/10
pH 7.6, 25°C, 58 uS
6. Mougeotia
![image](../gallery_images/zygnematophyceans/Mougeotia_p29-7_4016_small.jpg)
640x
Osceola pond #1
aquatic plant sample
10/25/07
9°C
7. Mougeotia
![image](../gallery_images/zygnematophyceans/Mougeotia_j6-4_4016_small.jpg)
640x
Mohawk-Gay Rd marsh
floating algal mass
5/20/10
18°C
Netrium
1. Netrium digitus
![image](../gallery_images/zygnematophyceans/Netrium_j72-12a_40125z_small.jpg)
500x
![image](../gallery_images/zygnematophyceans/Netrium_j72-12_40125z_small.jpg)
500x
Perrault Bog
plant detritus sample
8/5/10
pH 6.0, 23°C, 34 uS
2. Netrium digitus
![image](../gallery_images/zygnematophyceans/Netrium_j72a-9_40125z_small.jpg)
500x
![image](../gallery_images/zygnematophyceans/Netrium_j72a-9a_40125z_small.jpg)
500x
same as above
3. Netrium
![image](../gallery_images/zygnematophyceans/Netrium_j33-49_40125_small.jpg)
500x
Perrault Bog
floating algal mass
6/17/10
pH 5.0, 23°C, 41 uS
4. Netrium oblongum
![image](../gallery_images/zygnematophyceans/Netrium_n22a-9_4016_small.jpg)
640x
Perrault Bog
plant detritus sample
10/11/05
11.5°C
5. Netrium oblongum
![image](../gallery_images/zygnematophyceans/Netrium_p1-3_4016_small.jpg)
640x
Perrault Bog
plant detritus sample
6/19/07
19.5°C
6. Netrium
![image](../gallery_images/zygnematophyceans/Netrium_p24-4_402_small.jpg)
800x
![image](../gallery_images/zygnematophyceans/Netrium_p24-4a_402_small.jpg)
800x
Perrault Bog
plant detritus sample
10/23/07
Spirogyra
1. Spirogyra
![image](../gallery_images/zygnematophyceans/Spirogyra_p17-3_20125_small.jpg)
250x
![image](../gallery_images/zygnematophyceans/Spirogyra_p17-3a_402_small.jpg)
800x
pond east of Huron Lake
aquatic plant sample
10/16/07
2. Spirogyra
![image](../gallery_images/zygnematophyceans/Spirogyra_n44-1_20125_small.jpg)
250x
![image](../gallery_images/zygnematophyceans/Spirogyra_n44-1a_20125_small.jpg)
250x
Pike Bay from dock
aquatic plant sample
10/20/05
11.5°C
3. Spirogyra
![image](../gallery_images/zygnematophyceans/Spirogyra_n3-31_20125_small.jpg)
250x
![image](../gallery_images/zygnematophyceans/Spirogyra_n3-31a_20125_small.jpg)
250x
Nara Trail marsh
plant detritus sample
9/15/05
14°C
4. Spirogyra
![image](../gallery_images/zygnematophyceans/Spirogyra_j71-1_20125z_small.jpg)
250x
![image](../gallery_images/zygnematophyceans/Spirogyra_j71-1a_20125z_small.jpg)
250x
Moyle Concrete pond
macro-algae attached to sediment
8/5/10
pH 9.4, 23°C, 483 uS
5. Spirogyra
![image](../gallery_images/zygnematophyceans/Spirogyra_j48-1_20125_ec_small.jpg)
250x
![image](../gallery_images/zygnematophyceans/Spirogyra_j48-1a_40125_ec_small.jpg)
500x
old Laurium dump pond
plankton tow
7/1/10
pH 7.0, 17°C, 115 uS
6. Spirogyra
![image](../gallery_images/zygnematophyceans/Spirogyra_j64-1_4016z_small.jpg)
640x
![image](../gallery_images/zygnematophyceans/Spirogyra_j64-1a_4016z_small.jpg)
640x
![image](../gallery_images/zygnematophyceans/Spirogyra_j64-1b_4016z_small.jpg)
640x
Copper City, Trail 3 pond #1
plant detritus sample
7/21/10
pH 7.9, 27°C, 33 uS
7. Spirogyra (conjugation)
![image](../gallery_images/zygnematophyceans/Spirogyra_j97-1_20125z_small.jpg)
250x
Dollar bay at marina
macro-algae sample
8/12/10
pH 8.4, 26°C, 130 uS
8. Spirogyra (conjugation)
![image](../gallery_images/zygnematophyceans/Spirogyra_s42-20_202_v_small.jpg)
400x
![image](../gallery_images/zygnematophyceans/Spirogyra_s42-21_202_v_small.jpg)
400x
![image](../gallery_images/zygnematophyceans/Spirogyra_s42-13_202_v_small.jpg)
400x
Gratiot River, riffle below falls
filamentous algae sample
8/8/03
Spirotaenia
1. Spirotaenia condensata
![image](../gallery_images/zygnematophyceans/Spirotaenia_n14-44_40125_ec_small.jpg)
500x
Rice Lake from northern shore
surface plankton tow
9/27/05
20°C
2. Spirotaenia condensata
![image](../gallery_images/zygnematophyceans/Spirotaenia_n14-9_2016_ec_small.jpg)
320x
![image](../gallery_images/zygnematophyceans/Spirotaenia_n14-9b_202_ec_small.jpg)
400x
same as above
Zygnema
1. Zygnema
![image](../gallery_images/zygnematophyceans/Zygnema_n27-3_20125_ec_small.jpg)
250x
Osceola pond #1, adjoining marsh
aquatic plant sample
10/11/05
10°C
2. Zygnema
![image](../gallery_images/zygnematophyceans/Zygnema_j12-6a_20125_ec_small.jpg)
250x
![image](../gallery_images/zygnematophyceans/Zygnema_j12-6_40125_ec_small.jpg)
500x
Arnheim Sloughs site #4
aquatic plant sample
5/27/10
24°C
3. Zygnema
![image](../gallery_images/zygnematophyceans/Zygnema_p19-16a_20125_ec_small.jpg)
250x
![image](../gallery_images/zygnematophyceans/Zygnema_p19-16_4016_ec_small.jpg)
640x
Twelve Mile Lake
plankton tow
10/23/07
4. Zygnema
![image](../gallery_images/zygnematophyceans/Zygnema_n35-1_40125_ec_small.jpg)
500x
MTU settling pond
aquatic plant sample
10/16/05
11°C
5. Zygnema
![image](../gallery_images/zygnematophyceans/Zygnema_p29-19_2016_ec_small.jpg)
320x
![image](../gallery_images/zygnematophyceans/Zygnema_p29-9_40125_ec_small.jpg)
500x
![image](../gallery_images/zygnematophyceans/Zygnema_p29-18_402_ec_small.jpg)
800x
Osceola pond #1
aquatic plant sample
10/25/07
9°C
Zygnemopsis
1. Zygnemopsis
![image](../gallery_images/zygnematophyceans/Zygnemopsis_a43-12_402_small.jpg)
800x
Dollar Bay at entrance
surface plankton tow
10/10/01
pH 7.5,15°C