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

Coromandel (Asystasia gangetica)

Coromandel ( Asystasia gangetica ) is a species of plants in Acanthaceae, perennials, vines and branching that are widely found on the edges of roads, shrubs and gardens, resistant to shade, used as fodder, especially cattle, goats and sheep, treatment, conservation of land and ornamental plants. A. gangetica has a height of 88-95 cm, rectangular-shaped stem, brownish green or purplish green, taproot and can emerge from branches. Petiole has a length of 0.5-6 cm. Ellipse-shaped leaves, unifoliate, green or dark green, arranged facing each other and do not have stipules. Leaves have a length of 8.5 cm, width 4.9 cm, area 69.42 cm3, length and width ratio is 1.8:1, heart-shaped base and taper front end, rough surface, flat edge, a main bone and 4 -6 lateral veins on each side. Coromandel produces flowers after 4 weeks to 2 months. Compound flowers, lined up on one side with a length of up to 25 cm. Flower stalks have a length of up to 3 mm. Trumpet type, white with a bottom stran...
Read more

Screw tree (Helicteres isora)

Screw tree ( Helicteres isora ) is a species of plant in the Malvaceae family. It is a shrub or small tree, up to 8 meters tall. It has gray bark and alternate leaves, up to 22 cm long and 17 cm wide, oval in shape, with serrated edges and hairs. The flowers are red or white and reach a total length of 5.5 cm. The fruit is green when unripe, brown or gray when dry, twisted, spiral-shaped, and pointed at the tip. The seeds are black or brown, shiny, and diagonal, triangular, or rectangular. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Malvales Family: Malvaceae Subfamily: Helicteroideae Tribe: Helictereae Genus: Helicteres Pluk. ex L. in Sp. Pl.: 963 (1753) Species: Helicteres isora L. in Sp. Pl.: 963 (1753) HETEROTYPIC SYNONYMS Helicteres baruensis var. ovata DC. in Prodr. 1: 476 (1824) Helicteres chrysocalyx Miq. ex Mast. in J.D.Hooker, Fl. Brit. India 1: 365 (1874) Helicteres corylifolia Buch.-Ham. ex Dillwyn in Rev. Hortus Malab....
Read more

Wild durian (Cullenia exarillata)

Wild durian ( Cullenia exarillata ) is a species of plant in the Malvaceae, a tall tree with smooth, greyish-white bark, peeling on older trees, a straight trunk, horizontal branches and often with a series of knob-like tubercles for flower and fruit attachment. C. exarillata has young branches and the underside of the leaves is covered with golden brown peltate or shield-like scales. The leaves are single, alternate, glabrous, glossy green on the upper side and covered with silvery or orange peltate scales on the underside. Hermaphroditic flowers are tubular and also covered with golden brown scales, 4-5 cm long and cream or reddish brown in color. Flowers have no petals, formed of tubular bracteoles and tubular calyxes, 5-lobed. Fruit is round, 10-13 cm in diameter, covered with thorns and clustered along the branches. Many seeds, reddish brown, 4-5 cm long and 2-3 cm wide. The seeds are enclosed by a fleshy, whitish aril. The fruit splits open when ripe and dries to release the s...
Read more