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------- Confirmed host. As Begonia elatior.
* Brito R, Specht A, Gonçalves GL, Moreira GRP, Carneiro E, Santos FL, Roque-Specht VF, Mielke OHH, Casagrande MM (2019) Spodoptera marima: a new synonym of Spodoptera ornithogalli (Lepidoptera: Noctuidae), with notes on adult morphology, host plant use and genetic variation along its geographic range. Neotropical Entomology 48(3), 433-448.
* Heppner JB (2007) Lepidoptera of Florida. Part 1. Introduction and catalog. Gainesville, Florida Department of Agriculture & Consumer Services, p 670.
* Lin FY, Fang ZQ, Lee S, Wang YH, Lin YR, Chu CC (2019) First report of Xanthomonas axonopodis pv. begoniae causing bacterial leaf spot on Rieger Begonias in Taiwan. Plant Disease 103(11), p 2940.
* Werkman AW, Verhoeven JThJ, Roenhorst JW (undated) Plant species found infected by Tomato spotted wilt virus and Impatiens necrotic spot virus at the Dutch Plant Prot,ection Service since 1989. https://edepot.wur.nl/341977 (last accessed 2022-05)
------- As Begonia elatior.
* Tian X, Zheng Y, Chintaluri K, Meng B (2013) First report of Impatiens necrotic spot virus on Hiemalis Begonia (Begonia × hiemalis) in Canada. Plant Disease 97(2), p 291.