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Endoraecium carnegiei McTaggart & R.G. Shivas

Description
Uredinia forming galls on stems, irregular, up to 3 cm, yellowish brown.

Urediniospores ellipsoidal to ovoid, subhyaline to yellow, 34‒40 × 21‒25 μm; wall 4.0‒4.5 μm thick, uniform or slightly thicker at sides, with 6‒8 equatorial germ pores.

Telia on leaves, pulverulent, erumpent, elliptical, less than 1 mm, yellowish brown.

Teliospores cylindrical to fusiform, apex rounded, 1‒5-digitate, hyaline to subhyaline, 41‒76 × 10‒17 μm; wall 1.0‒1.5 μm thick at sides, 6‒19(‒32) μm thick at apex; pedicel persistent, up to 51 μm.

Hosts
Host family: Fabaceae
Host species: Acacia dealbata

Distribution
NSW

Comments
Endoraecium carnegiei is one of three species that forms galls on the stems of its host. The other two species, E. digitatum and E. irroratum, also infect species of Acacia in the Botrycephalae. Endoraecium carnegiei is only known to occur on A. dealbata in south-eastern Australia (McTaggart et al., 2015).

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Endoraecium carnegiei on Acacia dealbata - BRIP 59218.
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Endoraecium carnegiei on Acacia dealbata - BRIP 57926.
Scale bar = 1 cm.
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Urediniospores of Endoraecium carnegiei on Acacia dealbata - BRIP 57924.
Scale bar = 10 µm.
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Teliospores of Endoraecium carnegiei on Acacia dealbata - BRIP 57924.
Scale bar = 10 µm.