Synonyms: Comatricha affinis, Comatricha stemonitis, Comatricha typhina, Comatricha typhoides, Mucor stemonitis, Stemonitis affinis, Stemonitis atra, Stemonitis carlylei, Stemonitis leucopoda, Stemonitis lycopoda, Stemonitis platensis, Stemonitis typhina, Stemonitis typhoides, Stemonitopsis typhoides, Trichia typhoides.
Extract from Wikipedia article: Stemonitopsis is a genus of Amoebozoa in the family Stemonitidaceae. First circumscribed by Norwegian botanist Elly Nannenga-Bremekamp in 1967 as a subgenus of Comatricha, she later elevated the grouping to generic status in 1975. The type species is Stemonitopsis hyperopta, which was originally described by Charles Meylan in 1919 as Stemonitis hyperopta.
Stemonitopsis typhina is a species of slime mold that belongs to the class Mycetozoa. It is characterized by its cylindrical to elongated sporangia, typically 1-3 mm tall, with a dark brown to black color and a reticulated pattern on the peridium. In East and Central Texas, Stemonitopsis typhina has been found growing on decaying wood, particularly on logs and stumps in shaded areas of forests. It is often associated with other decomposing organic matter, such as leaf litter and soil. The species typically fruits during the fall and winter months, with a peak in November and December. Specimens have been collected in various counties, including Bastrop, Brazos, Grimes, and Houston, often in areas with rich soil and high humidity.
Slime mold Stemonitopsis typhina on a large mossy pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, June 7, 2019
LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Slime mold Stemonitopsis typhina on a log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 2, 2020LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Slime mold Stemonitopsis typhina on a wet log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 13, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Slime mold Stemonitopsis typhina on a large wet log without bark on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 13, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USAObservations of Stemonitopsis typhina in East and Central Texas reveal that the species prefers to grow on logs, particularly those with moss or without bark. Multiple sightings were recorded on Caney Creek Trail in Sam Houston National Forest, including on a large mossy pine log in June 2019, a log in April 2020, and two separate instances on wet logs in August 2021. The species was found to thrive in humid environments, with all observations occurring near water sources or on wet logs. The consistency of these findings suggests that Stemonitopsis typhina is well-adapted to the forest ecosystems of East and Central Texas, where it can be found growing on decaying wood in areas with high moisture levels. These observations provide valuable insights into the habitat preferences and distribution of this species in the region.
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