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Uromyces orientalis Syd.

Description
Uredinia on leaves and stems, subepidermal, erumpent, round, up to 0.5 mm diam., single or in groups, reddish brown to brown.

Urediniospores globose, subglobose or broadly ellipsoidal, yellowish brown to reddish brown, even, 18‒24 × 16‒20 µm; wall 1.5‒3.0 µm thick, sparsely to finely echinulate, appearing smooth in profile, with 2‒3 scattered germ pores.

Telia on leaves round, up to 0.5 mm diam., on stems fusiform, confluent and often girdling the stem for up to 3 cm, subepidermal, erumpent, dome-shaped, black.

Teliospores globose, subglobose or broadly ellipsoidal, reddish brown, 23‒29 × 22‒26 µm; wall 3‒7 µm thick at base and side, up to 10 µm thick at apex, smooth, with a hyaline persistent pedicel, up to 90 µm long.

Hosts
Host family: Fabaceae
Host species: Indigastrum parviflorum
Indigofera dominii

Indigofera linifolia
Indogfera linnaei

Distribution
NT, QLD, WA

Comments
Uromyces orientalis was first reported on Indigofera linifolia from Australia by Langdon and Herbert (1944). It was described on I. linifolia from India (Sydow et al. 1907).

Highslide JS
Uromyces orientalis on Indigofera linifolia - BRIP 60942.
Highslide JS
Uromyces orientalis on Indigofera linifolia - BRIP 60955.
Highslide JS
Uromyces orientalis on Indigofera linifolia - BRIP 49120.
Scale bar = 1 cm.
Highslide JS
Urediniospores of Uromyces orientalis on Indigastrum parviflorum - BRIP 54250.
Scale bar = 10 µm.
Highslide JS
Teliospores of Uromyces orientalis on Indigofera linnaei - BRIP 54830.
Scale bar = 10 µm.