image_list image_listE

Gamophyceae: Desmidales: Mesotaeniaceae
(Charophyceae: Zygnematales: Mesotaeniaceae)

 Netrium digitus
(Nägeli) Itzigsohn et Rothe var. naegelii (Brébisson) Krieger

Netrium Species [var. digitus]: Cell body 130-300 μm long, 40-84 μm wide, L/W = 3-4; cell wall smooth.
[var. lamellosum]: Longer than v. digitus, both sides parallel; cell body 140-416 μm long, 32-60 μm wide, L/W = 5-8.
[var. naegelii]: Smaller than v. digitus, both ends broadly rounded; cell body 100-200 μm long, 25-36 μm wide, L/W = 4-5.
[var. rectum]: Larger than v. digitus, tapered to both ends; cell body 300 μm long, 48 μm wide, L/W = 6.3 (Illustrations of The Japanese Fresh-water Algae, 1977).
QuickTime
Movies
http://protist.i.hosei.ac.jp/

Netrium digitus var. naegelii (Brébisson) Krieger, cell body 263 μm long, 63 μm wide, L/W = 4.2, x 400, x 640, Niigata Pref., Japan, May 2001, collected by N. Kinoshita, photo by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Netrium Netrium
Netrium Netrium Netrium Netrium

Netrium digitus (Ehrenberg) Itzingsohn et Rothe var. digitus: Vegetative cells spindle-shaped, L/W = 3-4, 130-300 μm long, 40-84 μm diam. chloroplasts consist of central axis and 6 radial ridges (Illustrations of The Japanese Fresh-water Algae, 1977).

Netrium digitus var. naegelii (Brébisson) Krieger: Vegetative cells spindle-shaped, L/W = 4-5 100- (124-190) -200 μm long, 25- (28-36) μm diam. (Illustrations of The Japanese Fresh-water Algae, 1977).

Netrium digitus var. lamellosum (Brébisson)Grünblad: Vegetative cells spindle-shaped, L/W = 5-8, 140- (272-416) μm long, 32- (42-59) -60 μm diam. chloroplasts consist of central axis and 6 radial ridges (Illustrations of The Japanese Fresh-water Algae, 1977).

Please click on images for viewing enlarged.
Copyright Protist Information Server