Coastal Arrowhead vs Fly Agaric

Sagittaria graminea compared with Amanita muscaria

Key Differences

Coastal Arrowhead is Not Evaluated while Fly Agaric is Least Concern.

Taxonomic Classification

Rank	Coastal Arrowhead	Fly Agaric
Kingdom	Plantae (植物)	Fungi (菌界)
Phylum	Magnoliophyta (被子植物門)	Basidiomycota (担子菌門)
Class	Liliopsida (単子葉植物綱)	Agaricomycetes (真正担子菌綱)
Order	Alismatales (オモダカ目)	Agaricales (ハラタケ目)
Family	Alismataceae	Agaricaceae (Agarics)
Genus	Sagittaria	Amanita (Amanitas)
Species	Sagittaria graminea	Amanita muscaria

Conservation Status

Coastal Arrowhead

NE — Not Evaluated

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Coastal Arrowhead	Fly Agaric
Diet	—	Decomposer
Average Lifespan	—	1 years
Average Length	—	20 cm
Average Weight	—	100 g

Habitat & Geographic Range

Coastal Arrowhead

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (China, Japan), Europe (6 countries), and North America (United States).

Fly Agaric

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Europe (4 countries), North America (United States), Oceania and the Pacific (New Zealand), and South America (Brazil, Chile, Colombia).

Coastal Arrowhead

Sagittaria graminea, the coastal arrowhead or grass-leaved arrowhead, is an aquatic or semi-aquatic perennial herb in the family Alismataceae native to wetland habitats across a wide geographic range including eastern North America, parts of Asia including China and Japan, and isolated populations in Europe. The species inhabits shallow water margins, muddy shores, freshwater marshes, slow-moving streams, ditches, and pond edges, where it often forms dense emergent colonies. Sagittaria graminea is distinguished from other arrowheads by its narrow, grass-like submerged and emergent leaves that lack the pronounced arrowhead shape characteristic of the genus when leaves are fully emergent, though aerial leaves may have small basal lobes. The plant produces white three-petaled flowers arranged in whorls on tall flowering stems, with male flowers above and female flowers below. It is assessed as Not Evaluated by the IUCN. The tubers of arrowheads have historically been consumed as a starchy food by Indigenous peoples across North America. The species provides important habitat structure for aquatic invertebrates and waterfowl, and waterfowl consume the seeds and tubers. The name Sagittaria derives from the Latin for arrow, reflecting the classic arrowhead leaf shape seen in other species of the genus.

Fly Agaric

ベニテングタケ（Amanita muscaria）は地球上で最も象徴的で広く知られる菌類であり、北半球の北方林全域に白いいぼのある鮮やかな赤い傘を広げる。童話のような外見とは裏腹に、ムシモールやイボテン酸などの強力な向精神性化合物を含み、中程度の毒性がある。シラカバ、マツ、トウヒと重要な外生菌根共生関係を形成し、無機栄養素と炭素を交換することで北方林の栄養循環に不可欠な役割を担っている。