Kumanoa gracillima

Type Locality: Angola, Africa.

Distribution: Africa: Angola; South America: Brazil, French Guiana.

Information about Kumanoa gracillima on Algaebase.

Inforamtion about K. gracillima on Genbank.

"Plants moderately mucilaginous, delicate to rigid; branching irregular and abundant; apices straight, apical cells embedded within fascicle tips; 2.5-12.5 cm high, 200-500 µm in diameter. Whorls reduced or well developed, obconic or pear-shaped, distinct and separated, becoming indistinct and confluent in older parts. Internode 300-1,100 µm long. Pericentral cells ovoid with 2-3 primary fascicles; rhizoidal filaments well developed, forming 2-3 layers of cylindrical cells. Primary fascicles straight, 4-9(-11) cell-storeys, proximal cells cylindrical or elliptical, L/D 2.5-10(-13); distal cells elliptical or obovoid, L/D 1.5-4; branching di- or trichotomous. Secondary fascicles abundant, covering the entire internode and as long as primary fascicles.

Monoecious, rarely dioecious. Spermatangia spherical or sub-spherical, terminal or sub-terminal on secondary or primary fascicles, 5.0-7.0 µm in diameter. Carpogonial branches helically twisted, arising from pericentral cells, composed of 5-8 disc- or barrel-shaped cells; involucral filaments short, 1-3 cell-storeys; carpogonia (35-)45-85 µm long; trichogyness cylindrical, club-shaped, stalked or unstalked, 6.0-10.0 µm in diameter. Carposporophytes 1 per whorl, dense, semi-spherical, higher than the whorl radius, 200-470 µm in diameter, 110-230 µm high; gonimoblast filaments 5-9 cell-storeys; cells cylindrical or elongate-elliptical; carposporangia obovoid, 12.0-17.0 µm long, 8.0-12.0 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, Limited: Bristol, England. 375pp.

Necchi, O. Jr. 1989. Rhodophyta de água doce de estado de São Paulo: levantamento taxónomico. Bol. Bot. Univ. São Paulo. 11: 11-69.

West, W. & West G. S. 1897. Welwetsch's African freshwater algae. J. Bot. 35: 1-7.

Plants monoecious, rarely dioecious, moderately mucilaginous, 2.5-12.5 cm high, 200-400 μm in diameter, abundantly and irregularly branched. Whorls reduced, dense or lax, pear-shaped, obconical or compressed, contiguous. Fascicles 2 or 3, primary fascicles straight, di- or trichotomously branched, 4-7 cell-storeys, proximal cells cylindrical or ellipsoidal, 3-10 μm in diameter, 20-45 μm long, distal cells barrel-shaped, ellipsoidal, 4-8 μm in diameter, 10-25 μm long, terminal hairs numerous, short. Cortical filaments poorly or well-developed. Secondary fascicles numerous, reaching the length of the whorls. Spermatangia spherical, 5-7 μm in diameter, terminal,rarely subterminal on secondary fascicles, rarely primary ones. Carpogonium-bearing branches spirally coiled, consisting of 5-8 disc- or barrel-shaped cells, arising from periaxial cells. Involucral filaments numerous, short. Carpogonia asymmetric, 4-7 μm in diameter at the base, 6-10 μm in diameter at the apex, 35-85 μm long, trichogyne cylindrical, club-shaped, sessile or stalked. Carposporophytes sessile, single, dense, hemispherical, higher than whorls, 110-230 μm in diameter, 200-470 μm high. Carposporangia obovoidal, 8-12 μm in diameter, 12-17 μm long.

Type locality= Andongo, Angola in Africa. Lectotype=F. Welwitsch, 3/V 1857, designated by Necchi 1990. Herbarium=Museu Nacional de História Natural, Portugal (LISU)