Rust Fungi of Southeast Asia

Hapalophragmium setulosum (Pat.) Syd.

Description
Uredinia on lower leaf surface, subepidermal, erumpent, round, less than 150 µm, yellow, paraphyses not seen.

Urediniospores reniform to obovoid, apex obtuse, yellowish brown, 23-27 × 15-21 µm; wall 0.5-1.5 µm thick, echinulate, with one germ pore.

Specimens cited in description:
- BRIP 57452.

Hosts
Host family:
- Fabaceae

Host species:
- Derris elliptica

Distribution
Philippines

Comments
Arthur and Cummins described Uredo derridicola on Derris from the Philippines and this may be a superflous description for the uredinial stage of Hapalophragmium setulosum.

Highslide JS
Hapalophragmium setulosum on Derris elliptica - BRIP 57452.
Scale bar = 2 mm.
Highslide JS
Urediniospores of Hapalophragmium setulosum on Derris elliptica - BRIP 57452.
Scale bar = 10 µm.