Kumanoa gibberosa

Type Locality: Malaysia

Distribution: Asia: Malaysia; South America: Brazil

Information about Kumanoa gibberosa on Algaebase.

"Plants cartilaginous, rigid; branching pseudodichotomous, sparse to abundant; apices straight, apical cells protruding or embedded within the apex; 2.0-4.0 cm high, 70-170 µm in diameter. Whorls reduced, compact, distinct and separated at the tips, obconic, becoming indistinct and confluent at the middle and basal parts. Internode 120-280 µm long. Pericentral cells spherical or ovoid, 2 primary fascicles; rhizoidal filaments well developed, forming 2-3 layers of short-cylindrical or barrel-shaped cells. Primary fascicles densely arranged, curved, 3-6(-8) cell-storeys; proximal and distal cells short-cylindrical to barrel-shaped, L/D 1-2; branching dichotomous. Secondary fascicles abundant, covering the entire internode and as long as primary fascicles.

Monoecious or dioecious. Spermatangia spherical or sub-spherical, terminal or sub-terminal on secondary, less often on primary fascicles, 4.0-7.0 µm in diameter. Carpogonial branches on pericentral cells, composed of 4-10 cells; involucral filaments short, 1-3 cell-storeys; carpogonia 25-35 µm long; trichogynes cylindrical to club-shaped, unstalked to shortly stalked, 4.0-6.0 µm in diameter. Carposporophytes 1 per whorl, dense, semi-spherical, higher than the whorl radius, 100-370 µm in diameter, 70-170 µm high; gonimoblast filaments 5-8 cell-storeys; cells cylindrical to barrel-shaped; carposporangia spherical or sub-spherical, less often obovoid, 10.0-15.0 µm long, 7.0-15.0 µm in diameter."

Necchi, O. Jr. & Vis, M.L. 2012. Monograph of the genus Kumanoa (Rhodophyta, Batrachospermales). Bibliotheca Phycologica 116. J. Cramer. Pp. 78. ISBN 978-3-443-60043-3.

Kumano, S. 2002. Freshwater red algae of the world. Biopress Ltd. 375pp.

Kumano, S. 1978. Notes on the freshwater red algae from West Malaysia. Bot. Mag. Tokyo. 91: 97-107.

Plants monoecious, mucilaginous, 1-4 cm high, 50-100 μm in diameter, sparsely and irregularly branched, dark green; whorls not recognizable, confluent; primary fascicles sparsely sometimes dichotomously branched, consisting of 3-5 cells, proximal cells cylindrical, barrel-shaped, short, 5-10 μm in diameter, 6-8 μm long, distal cells ovoidal, terminal hairs rare, varying length; cortical filaments extremely numerous, pseudo-parenchymatously developed; secondary fascicles numerous, very short, sparsely sometimes dichotomously branched, 2 or 3 cell-storeys covering all internodes; spermatangia spherical, 4-5 μm in diameter, terminal on fascicles; carpogonium-bearing branches more or less undulated, coiled, short, 7-10 μm long, consisting of 3-10 disc-shaped cells, arising from periaxial cells; cell walls of carpogonium-bearing branches very thick, pit-connections between these cells clearly recognized; involucral filaments numerous, short; carpogonia somewhat asymmetrical, ca. 4 μm in diameter, 25-30 μm long, trichogyne cylindrical, stalked; carposporophytes single, swelling or wart-like, 100-140 μm in diameter, 70-100 μm high, protruding from whorls. Gonimoblast filaments radially branched, more or less compactly agglomerated; carposporangia spherical or ellipsoidal, 7-10 μm in diameter, 10-13 μm long.