Sporothrix schenckii: (ascending lymphangitis)
Causes sporotrichosis.
Dimorphic fungus.
Exists as a cigar-shaped yeast at 37 ºC in the human body and as hyphae with spores in soil (conidia).
When spores are traumatically introduced into the skin, typically by a thorn (“rose gardener’s disease”), causes local pustule or ulcer with nodules along draining lymphatics (ascending lymphangitis)