Illinois Natural History Survey - University of Illinois

Fallopia japonica var. japonica
Mexican gamboo
Taxonomy

Synonyms: Reynoutria japonica, Polygonum cuspidatum

Subspecific taxa:

Classification:

  • Magnoliophyta
    • Magnoliopsida

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Species Distribution
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County Map Legend
Absent:
Not known from county
Medium confidence:
Medium or unknown confidence;
often old records or unverifiable observations
Medium-high confidence:
Often observations by expert botanists
High confidence:
Often vouchered herbarium records
Planted / introduced:
Native species introduced outside historic range,
or only in planted locations within county (e.g., restorations)
Historic / extirpated:
Only historic records for the species; likely extirpated
(Note that this category is not yet functional)

North American distribution maps for this species: FLNAUSDA PlantsBONAPBISON

Collection & Observation Phenology [?]

J
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F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:

Origin: Asia

Species Description

General: Dicot-herb, perennial

Roots: adventitious, rhizomes

Shoots: alternate leaf arrangment; simple leaf type; entire leaf margin; Pinnate leaf venation; lanceolate, obovate leaf shape

Inflorescence: raceme

Flowers: perfect; incomplete, regular; green, white; hypogynous ovary position

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Species is distributed in wastes, fence rows, along roads and railroads; occasionally spreading from cultivation in Illinois; sometimes planted as ornamental.

ILPIN Notes: Species forms vegetative colonies almost impossible to eradicate. Young underground rootstocks and young leafy stems can be cooked as palatable vegetable substitute for asparagus, or treated as a salad; possible hayfever and dermatitis (Stephens); possible use of starchy fruits. Species is native of Japan.

Functional Relationships:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

Coefficient of Conservatism (C-value) [?] :

  • Entire State:
  • Chicago Area:

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