Rust Fungi of Southeast Asia

Endoraecium sp.

Description
Uredinia on both leaf surfaces, subepidermal, erumpent, round to ellipsoidal, up to 500 µm, yellow to yellowish brown.

Urediniospores ellipsoidal to obovoid, yellowish brown, 26-30 × 18-21 µm; wall 3-4 µm thick at sides, apex 4-6 µm thick, reticulate, with 5-6 equatorial germ pores.

Specimens cited in description:
- BRIP 57457

Hosts
Host family:
- Fabaceae

Host species:
- Acacia mangium

Distribution
Philippines

Comments
McTaggart et al. (2015) determined that species of Endoraecium on Acacia were host specific and distinct from Endoraecium digitatum s. lat. A species of Endoraecium has not yet been described from A. mangium.

Highslide JS
Endoraecium sp. on Acacia mangium - BRIP 57457.
Highslide JS
Urediniospores of Endoraecium sp. on Acacia mangium - BRIP 57457.
Scale bar = 10 µm.