Reynoutria Japonica is a large plant with separate male and female individuals” (RV). it is native to Japan, China and Korea and can be identified in certain environments, whilst acknowledging these are perennial, meaning the roots survive in the ground enough to regrow the following year.
The plant can be easily identified by its unusual spade-shaped leaves. The small, white flowers are produced in summer and early autumn. Young leaves are a deep red and the stem is also speckled with red spots.
Fuligo Septica has an unusual appearance of a neon blob, it is not toxic and has fascinating characteristics.
It can be found on rotting bark and forest floors, normally when conditions are moist. The microorganisms the slime mold consumes are mainly bacteria and fungi, which can also be found in rotten/decaying food and coffee grounds in a worm bin. surprisingly, Fuligo Septic is not actually a mold, plant, animal or bacteria. It is a plastid.
The environment in which the plant lives play an important role in modifying the rate and extent it grows. In spring, this plant grows pink buds at ground level, from these reddish shoots emerge almost like flesh. With rapid growth “in summer they produce stands of tall bamboo-like canes which on average can grow to 2.1meters tall” (salo, 2011). These canes produce branches. (Shown in image below)
The leaves are almost heart shaped and can grow up to 14cm in length. The stems die in winter, but the canes can remain for several months longer. The creamy-white flowers produced in late summer and early autumn reach up to 15cm (6in) “Reynoutria japonica is an herbaceous perennial which forms large clumps 1-3 meters high” (et,al). It can reproduce by seed and by large roots which may reach a length of 5-6 meters
Like many slime molds, the cells of this species typically combine to form a plasmodium, a large mass of cells that may move in unsymmetrical spread during the search for nutrients. “Fuligo septica’s plasmodium may be anywhere from white to yellow Gray, typically 2.5–20 cm (1.0–7.9 in) in diameter, and 1–3 cm (0.4–1.2 in) thick”. (et al., 2006) it eventually transforms into a sponge-like body.
Nature and the environment the organism is habituating has a big impact and effect on growth. For example, wind and insects help the spread of spores from the mold to different surface areas. This leads to the individual pores to come together “forming a larger plasmodium and move a mass of protoplasm” (Casser et al., 1987), roughly a millimetre and an hour so that it can feed on microorganisms living in decaying plants.
Here is a fun fact!
Although Fuligo septica is harmless to people, it needs to watch out for us, as it is edible Appropriately, another name for dog vomit slime mold is scrambled egg slime, as indigenous people in some areas of Mexico have collected the mold and scrambled it like eggs!!!
Reyounutria japonica thrives off warm sunlight as it blooms in spring through till autumn, quite the opposite fuligo septica which thrives off humidity and large mass of Microorganisms, it grows on dark surfaces with little to no sunlight. The appearance of both organisms is nothing alike with one being a tall sturdy green plant and the other being a neon yellow blob with a slime like texture you wouldn’t mistake the two for each other. The speed of growth is noticeably very different as reyounutria japonica grows over the span of several months to reach its peak as it’s a perennial. However, fuligo septica is known to grown under many conditions all year round. As the plastid does not grow much in high its ability to spread and multiply cells allows it to cover a great surface area. Both organisms can be seen as weeds as they can grow unwanted. While fuligo septica grows on a surface it is easily removed, reyounutria japonica can be difficult to remove as the whole root has to be Doug for efficient removal and this can be difficult as they can reach up to 6 meters long.
overall, both reynoutria japonica and fuligo sepctica require their own environment to benefit their individual needs to thrive and grow. Cells are the smallest common denominator of life. Both organisms thrive off nutrients they require to grow. For fuligo septica its feeding on microorganisms living in decaying plant material, like how Reyounutria japonica thrives off water and oxygen, both organisms require moisture.
- RV;, F.J.K. (no date) Sexual reproduction in the invasive species Fallopia japonica (Polygonaceae), American journal of botany. U.S. National Library of Medicine. Available at: https://pubmed.ncbi.nlm.nih.gov/21659153/ (Accessed: January 19, 2023).
- samek, jan (2007) Japanese knotweed (reynoutria japonica ), Org. Available at: https://www.invasive.org/browse/detail.cfm?imgnum=5205098 (Accessed: January 19, 2023).
- Fuligo Septica (2022) Wikipedia. Wikimedia Foundation. Available at: https://en.wikipedia.org/wiki/Fuligo_septica#/media/File:Fuligo_septica_-_Gelbe_Lohbl%C3%BCte_-_Hexenbutter_-_02.jpg (Accessed: January 19, 2023).
- Japanese knotweed / RHS gardening (no date) / RHS Gardening. Available at: https://www.rhs.org.uk/weeds/japanese-knotweed (Accessed: January 19, 2023).
- Author links open overlay panelCharles P.ChapmanRodney K.NelsonMichaelOrlowskiPerson et al. (2006) Chemical composition of the spore case of the acellular slime mold Fuligo Septica, Experimental Mycology. Academic Press. Available at: https://www.sciencedirect.com/science/article/pii/0147597583900750 (Accessed: January 19, 2023).
- (no date) Environet. Available at: https://www.environetuk.com/japanese-knotweed/what-is-it (Accessed: January 20, 2023).
- salo, A. (2011) File:reynoutria japonica – japanese knotweed, Japanintatar, parkslide C … Available at: https://commons.wikimedia.org/wiki/File:Reynoutria_japonica_-_Japanese_knotweed,_Japanintatar,_Parkslide_C_IMG_6997.jpg (Accessed: January 12, 2023).
- Casser, I., Steffan, B. and Steglich, W. (1987) The chemistry of the plasmodial pigments of the slime mold Fuligo Septica (Myxomycetes): Semantic scholar, Angewandte Chemie. Available at: https://www.semanticscholar.org/paper/The-Chemistry-of-the-Plasmodial-Pigments-of-the-Casser-Steffan/8f7c017b87f4c15172fd9dd43665342ecf408fa6 (Accessed: January 19, 2023).