![]() A study on the seasonal appearance of fruiting bodies in the subtropical forests of Xalapa, Mexico, confirmed that maximal production coincided with the rainy season between June and September. In Europe, it has so far only been found in southern France. It has also been collected from China, India, Guatemala, Costa Rica, and as its southernmost distribution in the Humboldt oak cloud forests of Colombia. Mycologist David Arora notes that in the United States, the species is found with ponderosa pine in Arizona, but is absent in California's ponderosa pine forests. Its frequency of appearance in the Appalachian Mountains of the United States has been described as "occasional to locally common". ''Lactarius indigo'' is distributed throughout southern and eastern North America but is most common along the Gulf Coast, Mexico, and Guatemala. ![]() Hesler and Smith, who first described the variant based on specimens found in Brazoria County, Texas, described its typical habitat as "along sides of a muddy ditch under grasses and weeds, loblolly pine nearby". ''diminutivus'' is a smaller variant of the mushroom, with a cap diameter between 3 and 7 cm, and a stem 1.5–4.0 cm long and 0.3–1.0 cm thick. Fruit bodies of ''L. indigo'' have no distinguishable odor. Its attachment to the cap is usually in a central position, although it may also be off-center. Like the cap, it is initially sticky or slimy to the touch when young, but soon dries out. ![]() The interior of the stem is solid and firm initially, but develops a hollow with age. Its color is indigo blue to silvery- or grayish blue. The stem is 2–6 cm tall by 1–2.5 cm thick, and the same diameter throughout or sometimes narrowed at base. Their color is an indigo blue, becoming paler with age or staining green with damage. The gills of the mushroom range from adnate to slightly decurrent, and crowded close together. ''Lactarius indigo'' is noted for not producing as much latex as other ''Lactarius'' species, and older specimens in particular may be too dried out to produce any latex. The latex exuded from injured tissue is indigo blue, and stains the wounded tissue greenish like the flesh, the latex has a mild taste. The flesh of the entire mushroom is brittle, and the stem, if bent sufficiently, will snap open cleanly. Young caps are sticky to the touch.The flesh is pallid to bluish in color, slowly turning greenish after being exposed to air its taste is mild to slightly acrid. It is often zonate: marked with concentric lines that form alternating pale and darker zones, and the cap may have dark blue spots, especially towards the edge. The cap surface is indigo blue when fresh, but fades to a paler grayish- or silvery-blue, sometimes with greenish splotches. The margin of the cap is rolled inwards when young, but unrolls and elevates as it matures. The cap of the fruit body, measuring between 5 and 15 cm in diameter, is initially convex and later develops a central depression in age it becomes even more deeply depressed, becoming somewhat funnel-shaped as the edge of the cap lifts upward. ![]() Under appropriate environmental conditions of temperature, humidity, and nutrient availability, the visible reproductive structures are formed. indigo'' develops from a nodule, that forms within the underground mycelium, a mass of threadlike fungal cells called hyphae that make up the bulk of the organism. By extension, the term "mushroom" can also refer to either the entire fungus when in culture, the thallus (called mycelium) of species forming the fruiting bodies called mushrooms, or the species itself.Like many other mushrooms, ''L. The gills produce microscopic spores which help the fungus spread across the ground or its occupant surface.įorms deviating from the standard morphology usually have more specific names, such as " bolete", " puffball", " stinkhorn", and " morel", and gilled mushrooms themselves are often called " agarics" in reference to their similarity to Agaricus or their order Agaricales. "Mushroom" also describes a variety of other gilled fungi, with or without stems, therefore the term is used to describe the fleshy fruiting bodies of some Ascomycota. The standard for the name "mushroom" is the cultivated white button mushroom, Agaricus bisporus hence the word "mushroom" is most often applied to those fungi ( Basidiomycota, Agaricomycetes) that have a stem ( stipe), a cap ( pileus), and gills (lamellae, sing. Spore-bearing fruiting body of a fungus Culinary mushrooms in a diversity of shapes and colors Timelapse of oyster mushrooms ( Pleurotus ostreatus) growing on a Petri dish ![]()
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