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 Puccinia perlaevis
BiostatusPresent in region - Indigenous. Endemic
Article: Cunningham, G.H. (1928). Sixth supplement to the Uredinales and Ustilaginales of New Zealand. Transactions and Proceedings of the New Zealand Institute 59(3): 491-505 Wellington:.
Description: 0. Pycnia in small, scattered, epiphyllous, orbicular groups: seated on discoloured spots,
immersed.
I. Aecidia orange, in small scattered epiphyllous groups of 3-7,, often on the mid-rib, seated
on discoloured spots. Peridia cylindrical, standing above the leaf surface 1.5 mm., 0.3-0.5
mm. diameter, margins eroded, finally lacerate. Spores shortly obovate, subglobose or
polygonal, 24-30 x 16-22 mmm. ; epispore hyaline, 1 mmm. thick,, covered with densely
packed angular warts, appearing reticulate-areolate in consequence.
II. Uredosori scattered, hypophyllous, orange, fading to sulphur-yellow, crowded in the
vicinity of the mid-rib, orbicular, 0.5-1.5 mm.. diam., pulverulent, naked. Spores fusiform,
clavate or seldom elliptical, pointed at one or both ends, 40-56 x 16-20 mmm. ; epispore
hyaline, smooth, 1.5 mmm. thick, thickened apically to 4 mmm. ; germ pores absent, replaced
by odd scattered thin places in the wall; mixed with numerous hyaline, cylindrical
paraphyses.
III. Teleutosori similar to and mixed with the uredosori, sulphur-yellow. Spores elliptical or
clavate, 80-100 x 20-30 mmm. ; apex rounded, not or scarcely thickened, basal cell nearly
twice as long as the upper, and narrower; constricted at the septum; epispore tinted brown, 1
mmin. thick, smooth; pedicel persistent, hyaline, to, 140 x 8 mmm. ; germ pore of the upper
cell apical, basal pore immediately beneath the septum, both obscure; immixed with
numerous: hyaline cylindrical paraphyses.
X. Mesospores rare, elliptical or obovate, 30-50 x 18-26 mmm.
Notes: The host is endemic and fairly widely distributed through the, South Island, but confined to
the Tararuas of the North Island (Cheesem. 1925, p. 922).
This species possesses many peculiar features not present in any other New Zealand species;
the uredosori are deeply embedded in the host tissues, when they appear similar to aecidia,
but as the spores are not in chains, nor enclosed within peridia, they cannot be confused with
such. The most peculiar feature is that the uredospores are smooth, a character rare indeed for
this spore stage in the Uredinales. Another peculiarity is that the uredosori are present in the
cycle, the.only example in which the complete cycle is known in New Zealand Olearia and
Senecio inhabiting species. The teleutospores germinate immediately on reaching maturity,
and arise from the uredosori.
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: Spermagonia in small, scattered, circular groups, on discoloured spots; on the upper surfaces of leaves. Aecia in small, scattered groups, orange, on discoloured spots; on the upper surfaces of leaves. Aeciospores obovate to polygonal, 24–30 × 16–22 μm, hyaline, densely covered with angular warts. Uredinia scattered, rounded, orange fading to pale yellow, 0.5–1.5 mm in diameter; on the lower surfaces of leaves. Urediniospores fusiform, 32–56 × 16–20 μm, smooth, hyaline. Telia similar to and mixed with the uredinia, pale yellow. Teliospores elongate elliptical, 1-septate, 60–98 × 18–30 μm, smooth, light brown, almost hyaline; pedicel persistent.
Distribution: Distribution: Wellington, Nelson, Buller, Westland.; 1st Record: Cunningham (1928).
Article: Dingley, J.M. (1969). Records of plant diseases in New Zealand. New Zealand Department of Scientific and Industrial Research, Bulletin 192: 298 p. Wellington:.
Notes: Cunningham (1931a) stated that the host [Olearia laetmosa] is endemic and widely
distributed throughout the South Island but confined to the Tararua Ranges in the North
Island. The rust is confined to the South Island.
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