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 Uredo oleariae
BiostatusPresent in region - Indigenous. Endemic
Images (click to enlarge)
Caption: FIG. 125. Uredo Oleariae Cke. Uredospores from Olearia Lyallii Hook. f. The spore
on the right has been boiled for a few seconds in lactic-acid solution. Note inner wall. |
Article: Cooke, M.C. (1890). Fungi of New Zealand. Grevillea 19(90): 47-49.
Article: Cunningham, G.H. (1924). The Uredinales, or rust-fungi, of New Zealand: supplement to Part 1; and Part 2. Transactions and Proceedings of the New Zealand Institute 55: 1-58 Wellington:.
Description: II. Uredosori hypophyllous, seated on discoloured spots visible on the upper surface,
orbicular; 1 mm. diam., pulverulent, reddish-brown, deeply seated in the dense tomentum
clothing the leaf-surface. Spores subglobose, elliptical, or obovate. 42-55 X 35-40 mmm.;
epispore hyaline, coarsely and sparsely echinulate, varying in thickness from 3 to 6 mmm.,
cell-contents granular, tinted ferruginous; germ-pores indistinct.
Distribution: Distribution : Auckland Islands.
Notes: The host is endemic, and is confined to the Auckland Islands and the Snares. (Cheeseman,
1906, p. 283.)
The published description of Cooke's is far from accurate; as the spores are stated to be 22 X
15 mmm., and the epispore to be smooth. Fortunately I have part of the type collection, and
the above description has been drawn up from this. The epispore in different spores varies in
thickness, and when mounted and examined in the usual manner is seen to be very irregular;
when the spores are boiled for a few seconds in lactic acid the outer covering swells
somewhat and a distinct inner wall becomes visible (fig. 125, a). The large size of the spores,
together with the thick coarsely-echinulate epispore, serve to characterize the species.
Article: McKenzie, E.H.C. (2008). Rust fungi in the subantarctic islands of New Zealand. Mycoscience 49: 1-10 Mycological Society of Japan.
Notes: This endemic rust is known only from the Auckland Islands and Stewart Island. Wilson (1982) stated that
Olearia lyallii was introduced from Snares Islands to Auckland Islands, and that it is very similar to the coastal leatherwood (O. colensoi Hook. f.) of Stewart Island.
Article: Gadgil, P.D. (in association with Dick, M.A.; Hood, I.A.; Pennycook, S.R.) (2005). Fungi on trees and shrubs in New Zealand. Fungi of New Zealand. Ngā Harore o Aotearoa 4: xi + 437 p. Hong Kong: Fungal Diversity Press.
Description: Type: Rust and Smut Fungi; Description: Uredinia rounded, reddish brown, up to 1 mm in diameter; deeply immersed in tomentum on the lower surfaces of leaves in discoloured spots, which are visible on the upper surface. Urediniospores obovate to elliptical, 42–55 × 30–40 μm, coarsely and sparsely echinulate, hyaline.
Distribution: Distribution: Stewart Island, Auckland Islands.; 1st Record: Cooke (1890b).
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