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Puccinia gastrolobii Dietel

Description
Aecia on stems, yellow, peridium present.

Aeciospores globose or subglobose, hyaline, 22‒26 × 20‒23 μm; wall 1.5‒2.5 μm thick, verruculose.

Uredinia on lower leaf surface, cryptic, subepidermal, erumpent, round, less than 1000 μm, yellowish brown.

Urediniospores globose, subglobose or obovoid, apex obtuse, yellowish brown, 23‒28 × 21‒24 μm; wall 2.5‒3.5 μm thick at sides, 4‒5 μm thick at base, echinulate, with 2 equatorial germ pores.

Telia on stems and lower leaf surface, subepidermal, erumpent.

Teliospores ellipsoidal, apex acuminate, 2 celled, reddish brown, 32‒40 × 17‒20 μm; wall 1.5‒3 μm thick at sides, 3‒4 μm thick at apex, smooth with slight reticulation, pedicel persistent, up to 56 μm.

Hosts
Host family: Fabaceae
Host species: Gastrolobiium bilobum

Distribution
WA

Comments
Dietel (1922) described uredinia and telia of P. gastrolobii from Gastrolobium calycinum. Sequence data (unpublished) indicated the rust was macrocyclic and autecious. The aecia of P. gastrolobii are described above.

Highslide JS
Puccinia gastrolobii on Gastrolobium sp. - BRIP 57732.
Highslide JS
Aecia of Puccinia gastrolobii on Gastrolobium sp. - BRIP 57732.
Scale bar = 1 cm.
Highslide JS
Aeciospores of Puccinia gastrolobii on Gastrolobium bilobum - BRIP 57732.
Scale bar = 10 µm.
Highslide JS
Urediniospores of Puccinia gastrolobii on Gastrolobium sp. - BRIP 57735.
Scale bar = 10 µm.
Highslide JS
Teliospores of Puccinia gastrolobii on Gastrolobium sp. - BRIP 57732.
Scale bar = 10 µm.