Gardner, D. E. 1981. Rust on Commelina diffusa in Hawaii. Plant Disease 65:690-691.
ABSTRACT
The uredinial state of a rust disease pathogen is widespread on Commelina diffusa, a common ground cover in Hawaii, and sometimes casues death of aboveground portions of the host. No telia have been observed. Although this rust on Commelina in Hawaii has been attributed to Uromyces commelinae, the rust fungus reported here is Phakopsora tecta or Physopella tecta. Sphaerellopsis filum produced prominent pycnidia in many uredinial. Voucher specimens were deposited in the USDA National Fungal Collection Herbarium in Beltsville, MD.
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