Uredinopsis struthiopteridis Störmer, 1895
on Abies
gall
Spermogonia at the underside of the current year needles, subepidermal, colourless. There also in two rows the aecia, up to 0.2 mm wide and 1 mm high, white, fragile.
spermogonia, aecia
Pinaceae, monophagous
Abies alba, balsamea, sachalinensis var. mayriana.
on Onoclea
gall
uredinia hypophyllous, mostly sub-epidermal. The urediniospores are extruded as a thread; they are short-stalked elliptic, distally tapering into a sharp beak. A second type of uredionospores is long-stalked and pyriform. The more or less globular, usually 4-celled teliospores are formed below the epidermis, scattered in the leaf mesophyll.
uredinia, telia
Onocleaceae, monophagous
Onoclea struthiopteris.
references
Brandenburger (1985a: 7, 16), Gäumann (1959a), Klenke & Scholler (2015a), Poelt (1986a), Termorshuizen & Swertz (2011a).
24/03/2017