Item #: SCP-XXXX
Object Class: Euclid
Special Containment Procedures: All samples of SCP-XXXX-01 retrieved from instances of SCP-XXXX-03 and -04 are to be contained in hermetically sealed chambers at least ten (10) meters on each side. They are to be removed only for testing purposes. Samples found anywhere else must be disinfected and submitted for genetic profiling to prevent potentially dangerous unknown strains from being used in testing. Samples which correspond to a 'safe' strain may be stored in the aforementioned chambers. Others will be incinerated or studied further.
Saplings infected with instances of SCP-XXXX-02 must only be planted in designated testing areas with proper climate control and clean air. Other than this, they require no other containment procedures, barring unexpected abnormalities. If no SCP-XXXX-03 are needed for testing, and no new samples of SCP-XXXX-01 are needed, these instances, and the trees they infect, are to be disposed of at a temperature of at least six hundred (600) degrees Celsius.
Containment Procedures for instances of SCP-XXX-03 produced from Foundation-grown instances of SCP-XXXX-02 are dependent on the research they are being used for. MTF Theta-4 ("Gardeners") has been tasked with following and reporting on the actions of instances when they are allowed to leave Foundation sites. Testing involving letting them out is not to be performed if a squad consisting entirely of members not possessing the R1T14 marker is not able to accompany the instance.
Instances of SCP-XXXX-03 found in the wild are to be pursued and captured by a squad, again consisting of members who do not possess the R1T14 marker, from MTF-Theta-4. They are to be captured and placed in a transport vehicle. Most strains do not need to be restrained while in the vehicle, due to their reluctance to attack humans and inability to open most modern door systems. However, as a precaution in case the instance is of a violent strain1, they should be bound with steel chains until the vehicle reaches a Foundation site.
All instances of SCP-XXXX-04, either produced during testing, or produced by a 'wild' SCP-XXXX-03, are not to be approached. A perimeter is to be set up to stop civilians from coming into contact with the instance. Once the instance dies, any and all samples of SCP-XXXX-01 are to be collected, the area sterilized with standard protocols, and civilians in the surrounding two (2) km are to be administered class D amnesiacs. In addition, as a precautionary measure, squads returning from an SCP-XXXX-04 site are to have blood tests performed on them to prevent the spread of pathogens from the area of the instance.
Description: SCP-XXXX is a species, apparently fungal, with some plant characteristics, which undergoes several stages of life. In two, it is a parasite (SCP-XXXX-02 and -04), and in one, it is independently motile (SCP-XXXX-03). SCP-XXXX seems to be at least as old as human civilization, with preserved samples of SCP-XXXX-01 and carvings of -03 and -04 present in manmade structures going back as far as 4500 BCE. It is not known with certainty whether it existed before then, but it seems likely that it has existed since the earliest humans, possibly before.
An instance of SCP-XXXX appears to begin its life as an instance of SCP-XXXX-01. In this form, it appears as a small, brown cluster of seeds. Prior to being planted, instances in this form exhibit no anomalous properties, save for the ability to apparently survive upwards of millennia while still being able to 'germinate', and a somewhat unusual resistance to heat, which is a staple of all forms of the species' life cycle. After the cluster has been planted in relatively wet soil, near trees, it takes in nutrients for a period of approximately two weeks, and then opens up. Tendrils similar to roots are sent out towards the nearest tree roots, finding them through an unknown mechanism. Once a tendril has reached a tree root, it begins winding up the root until it reaches the surface, at which point it penetrates the bark and continues upwards. This process takes about a week from the point of opening to penetration of the bark. The tendril reaches about halfway up the trunk of the tree, then stops, forming a hard cyst.
Over time, this cyst grows and breaches the bark of the tree, forming an instance of SCP-XXXX-02. One instance of SCP-XXXX-01 can produce up to twelve, possibly more instances of -02 if there are enough trees nearby. In addition, instances of SCP-XXXX-01 can be directly implanted in saplings before they are planted, and it will form an instance of -02. This is the method used to grow instances of -02 in Foundation facilities. SCP-XXXX-02 is much harder than the wood around it, and is resistant to flames of up to five hundred fifty (550) degrees Celsius. The average diameter is approximately 5 cm out from the bark of the tree, although diameters in excess of 12 cm out from the bark have been recorded.
After 2-3 months, the SCP-XXXX-02 begins to separate from the main body of the tree through some sort of forced rotting process on the interface between the cyst and xylem. This causes the top of the tree to fall down, usually bringing the -02 with it.
After the SCP-XXXX-02 falls to the ground, it begins a metamorphosis. Wood begins to grow from the cyst. The amount of growth exceeds the amount that could be feasibly achieved with the limited store of sugars in the cyst, suggesting some unseen energy source. Eventually, after 3-6 days of growth, the full, humanoid form of an SCP-XXXX-03 is complete. What was formerly the SCP-XXXX-02 forms the head, and is now shaped similarly to a human skull, with branch- and root-like structures forming a semblance of arms, torso, and legs. After about a day more, the new -03 begins to move. It stands up, and begins moving around.
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