Skip to main content

Lemon-chrome porecrust (Luteoporia flavula) similar to Luteoporia straminea and pointing crust (Xylodon subpunctus) similar to Xylodon punctus

Dlium Lemon-chrome porecrust (Luteoporia flavula) similar to Luteoporia straminea and pointing (Xylodon subpunctus) similar to Xylodon punctus

NEWS - Lemon-chrome porecrust (Luteoporia flavula C.L. Zhao & H.M. Zhou, sp. nov.) similar to Luteoporia straminea and pointing crust (Xylodon subpunctus C.L. Zhao & H.M. Zhou, sp. nov.) similar to Xylodon punctus, two new species of wood-dwelling fungi were described from the Yunnan-Guizhou Plateau in southwest China.

Luteoporia F. Wu, Jia J. Chen & S.H. He. (2016) with Luteoporia albomarginata F. Wu, Jia J. Chen & S.H. He as the type species showed a monomitic hyphal system with generative hyphae containing clamp connections, and hyaline and smooth basidiospores.

Other species found in China are Luteoporia citriniporia Z.B. Liu & Yuan Yuan (2020), Luteoporia lutea (G. Cunn.) C.C. Chen & Sheng H. Wu (2021) and Luteoporia straminea C.L. Zhao (2023), while Luteoporia citriniporia is exclusively found in Europe, Luteoporia lutea is found in Oceania and the latter two species were originally described in southwest China.

Xylodon (Pers.) Gray (1821) is characterized by Xylodon quercinus (Pers.) (1821: 649) distributed in various habitats worldwide, including temperate, tropical and subtropical regions. A number of species have been reported in China.

Luteoporia flavula is characterized by purple tissue in KOH, in contrast to the reddish color of L. straminea. Basidiomata annual, resupinate, ceramic, odorless or tasteless when fresh, becoming hard when dry, up to 1 cm long, 1.2 cm wide, 200–250 μm thick when dry. Hymenophore odontoid, lemon chrome when fresh, curry yellow when dry, tissue turns purple in KOH. Sterile margin, narrow, and light lemon colored.

Generative hyphae monomitic with clamp joints, hyaline, thin to thick walled, IKI-, CB-. Subicular hyphae unbranched, 2.5–4 μm in diameter; subhymenial hyphae unbranched, 2–4 μm in diameter; abundant yellow to yellowish brown gelatinous substance present between subhymenium. Hymenial cystidia subuliform, hyaline, thick walled, 15.5–30 × 3.8–5.7 μm, no cystidioles; basidia 4-celled, clavate, with basal clamp joints, 24–29 × 4–5.2 μm.

Basidiospores oblong ellipsoid, hyaline, thin-walled, smooth, sometimes with guttules, IKI-, CB-, (3.4–)4–5.2(–5.5) × (2.2–)2.3–3.2(–3.4) μm, L = 4.56 μm, W = 2.74 μm, Q = 1.63–1.71 (n = 90/3).

Xylodon subpunctus differs from X. punctus in smaller basidiospores (2–4 × 1.5–2.5 μm vs. 5.5–7.2 × 2.5–3.6 μm). Basidiomata annual, regenerating, odorless and tasteless, keratinous when fresh, hard keratinous when dry, up to 4 cm long, 2 cm wide, 20–50 μm thick. Hymenium surface is powdery, shiny when dry, cracked. Sterile boundary is indistinct.

Hyphae monomitic, generative with clamp joints, hyaline, thin-walled, often branched, intertwined, IKI-, CB-, 1.8–4.4 μm in diameter; tissue unchanged in KOH; subhymenial hyphae densely covered by larger, irregular crystals; basal layer of hyphae arranged regularly.

Cystidia of two types: (1) occasional capitate cystidia, hyaline, thin-walled, slightly narrowed at the neck, with rounded apex, 27–34.2 × 3–3.5 μm; (2) fusiform cystidia often, hyaline, thin-walled, 20.3–26.8 × 5.3–6.4 μm; basidia 4-celled, stalked to clavate, with basal clamp connection, 10–17.4 × 2–5.2 μm

Basidiospores ellipsoid to oblong, hyaline, thin-walled, smooth, IKI-, CB-, (5.3–)5.5–7.2(–7.4) × (2.6–)2.5–3.6(–4.5) μm, L = 6.33 μm, W = 3.00 μm, Q = 2.08–2.13 (n = 60/2).

Original research

Hong-Min Zhou, Xin Yang, Yu-Yun Wang & Chang-Lin Zhao (2024). Morphological and molecular identification of two new wood-inhabiting macrofungi (Basidiomycota) from Yunnan-Guizhou Plateau, China. Phytotaxa 674 (1): 001–017, DOI:10.11646/phytotaxa.674.1.1

Dlium theDlium
Labels:

Popular Posts

Sengon gall rust (Uromycladium falcatarium)

Sengon gall rust ( Uromycladium falcatarium ) is a species of fungi in Raveneliaceae, grows on molucca albizia ( Falcataria moluccana ) as the host plant, the symptoms vary widely and sometimes are not obvious, the host stem shows brownish lumps to kill slowly. U. falcatarium infects host shoots at the age of 2-3 weeks which causes the leaves to curl, leg, do not develop normally and fall off easily. At 6 weeks of age, symptoms appear on curved and stiff stems and shoots. At the age of 3 months or more the tumor begins to enlarge. Symptoms begin with tumefaction on the leaves, branches and stems. Subsequent development creates a lot of brownish green bumps which then become small rashes on part of the stem or the whole. Kingdom: Fungi Phylum: Basidiomycota Subphylum: Pucciniomycotina Class: Pucciniomycetes Order: Pucciniales Suborder: Raveneliineae Family: Raveneliaceae Genus: Uromycladium Species: Uromycladium falcatarium
Read more

Dragon tongue (Phyllodium elegans)

Dragon tongue ( Phyllodium elegans ) is a plant species in Fabaceae, shrubs up to 3 meters high, stems erect or sloping and brown, leaves gathered in three strands and are elongated in shape, flowers grow in rows on long stalks. P. elegans has stems erect or sideways, cylindrical, woody, sturdy, slender, branching alternately, zigzagging, brown, the surface has white hair and the old stems have colored spots. The leaves grow in a stalk with three strands. The leaves are elongated, the base is rounded, the tip is slender, a bone in the middle with several lateral veins, the upper surface is brownish green and has white hair. The inflorescences grow in rows on long stalks. The flower buds are folded and wrapped in two circular leaves, flat, green and white-haired. The flower has a yellowish white color and the base is brown. Pod-shaped fruit, white hair, tip has a tail and 1-3 seeds but generally 2 seeds. Dragon tongue grows on the slopes of sandy, calcareous soils, karst, lots of sun...
Read more

Merapi orchid (Vanda tricolor)

Merapi orchid ( Vanda tricolor ) is an endemic orchid species of Mount Merapi with flowers shaped like spiders, has three dominant colors in one petal are white, brownish red spots, and purple. V. tricolor is considered the most beautiful of the 70 species of orchid found at Merapi. Orchid Merapi is the queen of orchids from the slopes of Mount Merapi. V. tricolor and Dendrobium mutabile are extraordinary orchids where the two plants survive after being hit by the eruption of Mount Merapi in 2010. V. tricolor has a heat shock protein (HSP) that makes it heat resistant. V. tricolor can live in the lowlands up to 1,000 meters above sea level. Cultivation is very easy and only needs patience. The plant's height is around 15 centimeters at the age of two and continues to rise up to several meters. This Merapi orchid has a fragrant aroma, but only at 7.00-9.00 in the morning. Each tree can have dozens of flower stems that generally appear from October to September. Even so,...
Read more