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Fusarium root rot Fusarium solani: Gray mold Botrytis cinerea: Leaf spot Alternaria sp. Corynespora cassiicola. Phytophthora root and crown rot Phytophthora nicotianae var. parasitica Phytophthora nicotianae var. nicotianae Phytophthora cryptogea. Powdery mildew Oidium sp. Pythium root rot Pythium sp. Rhizoctonia root and crown rot Rhizoctonia sp.
Phytophthora crown and root rot Phytophthora cryptogea Phytophthora parasitica = Phytophthora nicotianae. Powdery mildew Erysiphe cichoracearum Sphaerotheca sp. Pythium root rot Pythium spp. Rhizoctonia root and crown rot Rhizoctonia solani. Rhizopus blight Rhizopus stolonifer. Sclerotinia blight Sclerotinia sclerotiorum. Septoria leaf spot ...
Saintpaulia ionantha H.Wendl. Saintpaulia kewensis C.B.Clarke. Saintpaulia tongwensis B.L.Burtt. Streptocarpus ionanthus ( synonym Saintpaulia ionantha) is a species of Streptocarpus in the section Saintpaulia, commonly known as an African violet. It is native to eastern and southwestern Tanzania. [2]
Sooty rot Aspergillus niger: Sour rot Geotrichum candidum: Southern blight Athelia rolfsii Sclerotium rolfsii [anamorph] Stem spot Diaporthe arctii: Tip rot Numerous pathogens Umbel blight Colletotrichum gloeosporioides: Violet root rot Helicobasidium brebissonii = Helicobasidium purpureum Rhizoctonia crocorum [anamorph] Watery soft rot ...
Description. Saintpaulias, which grow from 6-15 cm tall, can be anywhere from 6-30 cm wide. The leaves are rounded to oval, 2.5-8.5 cm long with a 2-10 cm petiole, finely hairy, and have a fleshy texture. The flowers are 2-3 cm in diameter, with a five-lobed velvety corolla ("petals"), and grow in clusters of 3-10 or more on slender stalks ...
Sclerotinia sclerotiorum is a plant pathogenic fungus and can cause a disease called white mold if conditions are conducive. S. sclerotiorum can also be known as cottony rot, watery soft rot, stem rot, drop, crown rot and blossom blight. A key characteristic of this pathogen is its ability to produce black resting structures known as sclerotia ...
Helicobasidium purpureum is a species of fungus in the subdivision Pucciniomycotina. Basidiocarps (fruit bodies) are corticioid (patch-forming) and are typically violet to purple. Microscopically they have auricularioid (laterally septate) basidia. [1] Helicobasidium purpureum is an opportunistic plant pathogen and is one of the causes of ...
Petrocosmea forrestii, leaf rosette. Petrocosmea is a genus of the family Gesneriaceae, the African violet family. Most of the species within this genus are endemic to high-altitude areas in Western China, [1] although some are native to other parts of Asia. [2] It is a rosette forming genus that generally grows on wet mossy rocks or forests.