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Fungi: Basidiomycota: Agaricomycetes: Russulales: Russulaceae: Russula marshalliorum T.F.Elliott & Trappe

Russula marshalliorum

Synonyms: Cystangium vesiculosum, Martellia vesiculosa.

AI-generated description

Russula marshalliorum is a species of mushroom that belongs to the genus Russula. It has a cap that ranges from 3-8 cm in diameter, typically reddish-brown to brown with yellowish or greenish tints, and a stipe that is white to cream-colored. The flesh is firm and the gills are adnexed to free. In East and Central Texas, Russula marshalliorum has been found growing in association with oak and pine trees, often in sandy or clay soils. It typically fruits from June to September, with a peak in July and August. The species is considered rare to uncommon in the region.

Photos of this mushroom from East and Central Texas

Soft mushroom button near an oak tree, can be <B>Russula marshalliorum</B> (Cystangium (Martellia) vesiculosum), near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2023-11-12.htm">November 12, 2023</A>
LinkSoft mushroom button near an oak tree, can be Russula marshalliorum (Cystangium (Martellia) vesiculosum), near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Cross section of soft mushroom button <B>Russula marshalliorum</B> (Cystangium (Martellia) vesiculosum)(?) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2023-11-12.htm">November 12, 2023</A>
LinkCross section of soft mushroom button Russula marshalliorum (Cystangium (Martellia) vesiculosum)(?) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Close-up of cross section of soft mushroom button <B>Russula marshalliorum</B> (Cystangium (Martellia) vesiculosum)(?) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2023-11-12.htm">November 12, 2023</A>
LinkClose-up of cross section of soft mushroom button Russula marshalliorum (Cystangium (Martellia) vesiculosum)(?) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Tissues under a microscope of a button-like mushroom <B>Russula marshalliorum</B> (Cystangium (Martellia) vesiculosum)(?) collected in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
LinkTissues under a microscope of a button-like mushroom Russula marshalliorum (Cystangium (Martellia) vesiculosum)(?) collected in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
Hyphae of a button-like mushroom <B>Russula marshalliorum</B> (Cystangium (Martellia) vesiculosum)(?) collected in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
LinkHyphae of a button-like mushroom Russula marshalliorum (Cystangium (Martellia) vesiculosum)(?) collected in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
Hyphae and cystidia(?) of a button-like mushroom <B>Russula marshalliorum</B> (Cystangium (Martellia) vesiculosum)(?) collected in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
LinkHyphae and cystidia(?) of a button-like mushroom Russula marshalliorum (Cystangium (Martellia) vesiculosum)(?) collected in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
Hyphae at low magnification of a button-like mushroom <B>Russula marshalliorum</B> (Cystangium (Martellia) vesiculosum)(?) collected in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
LinkHyphae at low magnification of a button-like mushroom Russula marshalliorum (Cystangium (Martellia) vesiculosum)(?) collected in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023

AI-generated summary of observations

Observations of the fungus Russula marshalliorum in East and Central Texas reveal a soft mushroom button found near an oak tree, specifically near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest. The cross-section of the mushroom shows its internal structure, with close-up views displaying its microscopic features. Under a microscope, the tissues of the mushroom exhibit characteristic hyphae and possible cystidia. Further examination at low magnification confirms the presence of hyphae. These observations were made on November 12, 2023, in Sam Houston National Forest, north of Montgomery, Texas, with multiple samples collected and analyzed to understand the morphology of Russula marshalliorum in this region. The mushroom's appearance and microscopic features are consistent with those expected for this species, providing valuable insights into its characteristics.

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Acknowledgements

Mushroom Observer and Facebook for learning names of local mushrooms.

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