Skip to main content

In kyu Lee alga (Aglaothamnion inkyui) from Korea closely related to Aglaothamnion pseudobyssoides

In kyu Lee alga (Aglaothamnion inkyui) from Korea closely related to Aglaothamnion pseudobyssoides

NEWS - Researchers collected red algae from the east coast of Korea and phylogenetic analysis using rbcL sequences and two DNA-based species delimitation analyses revealed the specimens to be a new species, In kyu Lee alga (Aglaothamnion inkyui E.Shim & G.H.Kim sp. nov), which is closely related to A. pseudobyssoides.

Aglaothamnion was assigned by Feldmann-Mazoyer (1941) to species previously placed in the genus Callithamnion, with the type species A. furcellariae (J.Agardh) Feldmann-Mazoyer (1941: 454), which was later synonymized with A. tenuissimum (Bonnemaison) Feldmann-Mazoyer (1941; 469).

Currently 35 Aglaothamnion names are accepted and 3 of them are recorded from Korea: A. callophyllidicola (Yamada) Boo, I.K.Lee, Rueness & Yoshida (1991), A. chejuense (G.H.Kim & I.K.Lee) and A. oosumiense Itono (1971). Now Eunyoung Shim and Gwang Hoon Kim from Kongju National University in Gongju and colleagues examine the new collection as a new species of red alga.

A. inkyui has a thallus is uniseriate, thin, up to 4 cm high, attached at the base by multicellular rhizoids. No reproductive structures were seen. Branching is dichotomously alternate, sometimes branches appear at irregular intervals at the bottom of the axial cells.

Freshly collected thalli are reddish in color with a light brown hue. Near the base of the thallus, the initial regular dichotomous pattern is sometimes less easy to observe. Branching results in a marked zig-zag arrangement of the axial cells in the apical parts of the thallus. Mature axial cells, ca. 10 cells below the apex, are longer than wide (30-60 mm by 300-500 mm; L/W: 2–8:1).

Lateral branching is of 2-3 orders; the apical cell is blunt. All cells are uninucleate. The average nuclear size is 10x15 μm in the main axial cells, while the newly growing cells at the tip had smaller nuclei, averaging 4x6 μm.

The species is distributed in Sungeut Beach, Gangneung-si, Gangwon-do, South Korea. It is mostly found on tidal rocky substrates. The fibrous thallus is attached to hard rocky substrates. This is a new species record of South Korea. The name honors Professor In kyu Lee for his many years of psychological research in South Korea.

Original research

Eunyoung Shim, Soo Yeon Kim, Yong Tae Kim, Giuseppe C. Zuccarello & Gwang Hoon Kim (2024). A new species of Aglaothamnion (Ceramiales, Rhodophyta) from Korea, Aglaothamnion inkyui sp. nov. Phytotaxa 671 (1): 001–011, DOI:10.11646/phytotaxa.671.1.1

Dlium theDlium

Popular Posts

Sandbox tree (Hura crepitans)

Sandbox tree ( Hura crepitans ) is species in Euphorbiaceae, a tropical tree, growing up to 60 meters tall and with a trunk circumference of up to 13.2 meters, the trunk is covered with long and sharp thorns and exudes a poisonous sap. H. crepitans has large, oval leaves, 15 cm wide and 20 cm long. The petioles are 22 cm long. The flowers are red and lack petals. Male flowers grow on long stalks, while female flowers grow singly in leaf axils. The fruit is a large, flask-shaped capsule, up to 10 cm in diameter, with 12-16 radially arranged carpels. The seeds are flat and about 2 cm in diameter. The capsule bursts when ripe, dividing into segments and ejecting the seeds at a speed of 70 m/s, a distance of 30-100 meters. This tree prefers moist soil and partial shade or partial to full sun, a warm, humid environment. It is often cultivated for shade. The wood is light and used to make canoes. The sap is used to poison fish. Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiosperma...

Telotaun (Manihot carthagenensis)

Telotaun ( Manihot carthagenensis ) is a plant species in Euphorbiaceae, trees or shrubs 2-10 m tall, erect and fibrous, white latex, leaves varying with the subspecies noted are Manihot carthagenensis ssp. carthagenensis , Manihot carthagenensis ssp. glaziovii and Manihot carthagenensis ssp. hahnii . M. carthagenensis has an erect stem, a tubular shape, a young stem which is bright green and covered in white wax, an old stem that has a thin layer of brown skin. Long leaf stems and white waxy, arranged alternately, growing in all directions, green on the bottom and redish on the top. Leaves have 3-7 fingers each up to 25 cm long and up to 15 cm wide, ellipses become obovoid, sometimes pandurate and apex acute. Each leaf finger has a bone in the middle that moves linearly with some pinnate bones. The upper surface is green and slightly shiny, the lower surface is whitish green. The base of the leaf is centered at the end of the stalk, the pointed end which ends at the head of the sp...

Giant green leech (Raksasa hijau)

Lintah raksasa or giant green leech ( Raksasa hijau ) is a species of animal in Salifidae, large green leeches, carnivores, not hematophagic, can grow to lengths of more than 50 cm, the front is perfectly tubular, but it is getting bigger, wider and flat backward. R. hijau has a front end that ends with a white mouth and has a width equal to the diameter of the front end of the body. The rear end ends with the anus and has a width equal to the diameter of the rear end of the body. The upper surface is whole dark green or leafy green, looks shiny and has no other additional color features. The bottom surface is lighter or brownish green. The skin is wrinkled like tight, elastic joints that make it possible to lengthen the body. Giant green leech moves forward by extending the tip of the front of the body to keep the new location farther away and this movement is then followed by the middle body and gradually the rear where the body moves completely. R. hijau does not suck blo...