UPN: FR-PAR-MRS-001342-HWD
(Unique Plant Number: registered code for France, Paris, Marais sector, specimen ID 1342, Horseweed classification)
Species: Conyza canadensis
Alias: Horseweed, Canadian Fleabane
Location: Marais, Paris, FR
GPS: 48.857100, 2.360300
Date of Registration: 28 June 2025
Status: MON-03 (Monitored – not immediately hazardous, tracked for spread and symbolic potential)
Full plant portrait showing urban sidewalk growth at southern gate. Leaf detail: lanceolate, slightly serrated. Stem: upright, reddish, fine trichomes. Flower: not yet present (pre-bloom phase).
Growth Type: GT-02A (Annual – completes life cycle in one year)
Age: Approx. 8 weeks (inferred from developmental stage)
Gender: R-G-MO (Monoecious – male and female reproductive parts on the same plant)
Reproduction: R-T-W (Sexual, Wind-pollinated – airborne propagule dispersal)
Genome: G-SCN (Verified Standard Classification Network – no genomic edits detected)
Visual Morphology ID: Verticality, pubescence, basal rosette with narrow lanceolate leaves
Symbolic Risk Score: SRS-09 (Culturally Neutral. No significant presence in national mythos, literary canon, or emotional rhetoric)
Interaction Type: CP (Competitive – resource competition with proximate species)
Known Associates: POA-ANU Poa annua, ALG-MIX-PAV sidewalk algae, LCH-URB-RN1 runoff-influenced lichen
Mutualism Score: MTS-18 (Conditional. Interactions occur only under disturbance or poor substrate conditions)
Primary Habitat: HB-UR (Urban Roadside – survives in anthropogenic, compacted, often contaminated soils)
Tolerance Profile: TOL-AX3 (High – tolerates pollution, drought, high heat, physical trampling)
Mobility Pattern: MOB-W1 (Wind-dispersed – airborne seed transport mechanism)
Canopy Service Score: CSS-11 (Lowest tier. Plant height under 1 meter, no branch spread, zero cooling impact. Offers no appreciable shade. May cause visual interference at pedestrian eye level but not thermally relevant.)
Debris Liability Index: DLI-X2 (Negligible. Fine leaves and stems dry and disperse quietly. No sticky sap, spiky fruits, or allergenic pollen of note. Occasional seed dispersal via wind fluff, but volume is too low to trigger sanitation concerns.)
Edibility: HUM-N (No – plant is not edible or palatable for human consumption)
LIV-P: Partially edible – mildly toxic to livestock if grazed in bulk
Historical Use: FOLK-T (Used in folk medicine without verified pharmacological value)
Desirability Index Score: DIS-457 (BBC scale 350–950. 457 = Weed-Classified. Below 500 threshold, subject to suppression due to uncontrolled spread and lack of approved function)
Filed by: Directorate of Botanical Typologies
Verification Officer: #FR3-SG21
Compliance Code: BBC-PIC-V5.2-HWD
Mandate Jurisdiction: I (Classification), III (Surveillance)