Amanita hemibapha
🌍 Distribution & Habitat
Amanita hemibapha, commonly known as the Half-Dyed Slender Caesar, is a striking mushroom found in Southeast Asia and Oceania. It grows either scattered or in clusters and associates with trees like Hopea parviflora, Vateria indica, and nutmeg (Myristica fragrans).
🌈 Varieties & Identification
This species has a distinct variant: Amanita hemibapha var. ochracea – Found in China, with a yellow-ochre cap instead of red. This variety can cause dizziness and nausea if consumed in large amounts, so it’s best avoided!
Both types are known locally as “chicken egg” due to their egg-like appearance when young, covered by a universal veil. Their resemblance to the lethally toxic Amanita subjunquillea makes careful identification crucial!
🧢 Cap
Size: 0.98 to 3.94 inches (2.5 to 10 cm)
Shape: Hemispherical when young, gradually flattening with age, sometimes forming a central depression
Color: Starts as bright tomato red or capsicum red. With age, the center turns deep orange, while the edge fades to yellow.
Margin: Striated up to half the radius; flesh beneath the cap is white with a yellow band and does not bruise when touched.
🍃 Gills
Arrangement: Free and crowded
Color: Creamy white at first, transitioning to light yellow with maturity
Special Feature: Occasionally, you may find forked gills and short gills of different lengths.
📏 Stem
Size: 2.76 to 5.91 inches (7 to 15 cm) tall, 6–12 mm wide
Color: Maize yellow above, fading to pastel yellow below, with a superior, maize-yellow ring that’s striated on top.
Volva: A white, saccate (sac-like) base with a yellow inner surface and sometimes brown patches. It’s attached only at the base, with remnants of the veil often left on the stem.
🍄 Spores
Size: 7.9–10.1 × 5.5–6.3 µm, ellipsoid to elongate, inamyloid
Microscopic features: Common basal clamps
Spore Print: White
⚠️ Edibility & Safety
The red-capped Amanita hemibapha is generally considered a choice edible in smaller quantities, but caution is essential due to its resemblance to toxic Amanitas. The A. hemibapha var. ochracea should be avoided due to reports of adverse effects.
💡 Fun Fact: When young, the fruit bodies look just like egg yolks, earning it the name “Gongsey” in local dialects!
Photo sources:
Photo 1-3 - Author: Siddarth Machado (CC BY 4.0)
Photo 4 - Author: Gopakumar VR Namboothiri
