Puccinia tetragoniae var. novae-zelandiaeSynonymsPuccinia tetragoniae
BiostatusPresent in region - Indigenous. Endemic
Images (click to enlarge) Caption: Figure 1. A, Puccinia tetragoniae var. novae-zelandiae, teliospores and urediniospores
(PDD 56064 - type). B, Uredo chathamica, urediniospores (PDD 44228 - type).
Specimens mounted in hydrous lactophenol. |
Article: McKenzie, E.H.C. (1991). Puccinia tetragoniae var. novae-zelandiae var. nov. and Uredo chathamica sp. nov. from Chatham Islands, New Zealand. Mycotaxon 41(1): 307-310. Description: Telia amphigenous, reddish-brown, in circinnate groups surrounding the uredinia, long
covered. Teliospores 42-50 x (29-) 32-35 (-36) µm, broadly ellipsoidal to cylindrical,
sometimes acuminate, usually constricted at septum, wall 3-6 µm thick at sides, (5-) 7-10
µm at apex, smooth, chestnut brown; pedicels up to 60 x 6-11 µm, but usually broken
shorter, pale luteus. Habitat: On Tetragonia tetragonioides (Pallas) Kuntze Notes: Although Cunningham (1923, 1931) described teliospores of P. tetragoniae, it is likely
that these were described from Australian material since Laundon (1963) did not see any
on New Zealand specimens examined during his revision of rusts on Tetragonia.
Laundon distinguished three varieties under P. tetragoniae on the basis of urediniospore
morphology (size and wall layer thickness) and geographical distribution, viz, var.
tetragoniae on T. implexicoma (Miq.) Hook. f. in Australia, var. austro-africana E. M.
Doidge on T. tetragonioides in South Africa, and (P. tetragoniae var.)
Uredo novae-zelandiae Laundon on T. tetragonioides and T. trigyna Banks &
Sol. ex Hook. f. in New
Zealand. Although teliospores were unknown for New Zealand collections of the rust,
Laundon had little doubt that the rust belonged in this complex.
Urediniospores from the Chatham Islands collection measure (27.5-) 29-32 (-35) x (22-)
24-27 µm, mean 31 x 25 µm, with the inner wall layer 1-2 ,m thick and the outer layer 1-3 µm thick.
These measurements are similar to those given by Laundon (1963) for Uredo
novae-zelandiae.
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