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Prospodium tuberculatum (Speg.) Arthur

Description
Uredinia on leaves, abaxial, subepidermal, erumpent, round, up to 250 µm diam., reddish brown; paraphyses peripheral, cylindrical, clavate or incurved, hyaline, up to 160 µm long and 16 µm wide, wall 0.5 µm thick.

Urediniospores subglobose or broadly ellipsoidal, yellowish brown to pale brown, 23‒29 × 21‒26 µm; wall 1.5‒2.5 µm thick, echinulate, with spines up to 2 µm, with 2 equatorial (or apparently so as positioned on opposite sides) germ pores visible when stained in aniline blue.

Telia on leaves, amphigenous, subepidermal, erumpent, sparse, scattered or in small groups, round, up to 300 µm diam., on chlorotic or purplish leaf spots with diffuse borders up to 2 mm diam., black.

Teliospores ellipsoidal, apex rounded or umbonate, reddish brown, 40‒48 × 26‒33 µm; wall 4‒6 µm thick, verrucose or tuberculate, 2 celled, slightly constricted at transverse septum, with an apical germ pore in the upper cell and one situated adjacent to the pedicel in the lower cell, germ pores each covered by a subhyaline to pale brown umbo, pedicel persistent.

Hosts
Host family: Verbenaceae
Host species: Lantana camara

Distribution
QLD

Comments
Prospodium tuberculatum was introduced to Australia from Brazil in 2001 for the biological control of the invasive weed Lantana camara (Ellison et al. 2006).

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Prospodium tuberculatum on Lantana camara - BRIP 57630.
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Prospodium tuberculatum on Lantana sp. - BRIP 52451.
Scale bar = 1 cm.
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Uredinia of Prospodium tuberculatum on Lantana camara - BRIP 53659.
Scale bar = 5 mm.
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Telia of Prospodium tuberculatum on Lantana camara - BRIP 53659.
Scale bar = 5 mm.
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Urediniospores of Prospodium tuberculatum on Lantana camara - BRIP 53659.
Scale bar = 10 µm.
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Teliospores of Prospodium tuberculatum on Lantana camara - BRIP 53659.
Scale bar = 10 µm.
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Pedicel appendages on teliospores of Prospodium tuberculatum - BRIP 53659.
Scale bar = 10 µm.
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Paraphyses of Prospodium tuberculatum on Lantana camara - BRIP 53659.
Scale bar = 10 µm.


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