Kumanoa intorta

Type Locality: Szechwan, China

Distribution: China. There was a report of this taxon in French Guiana but those specimens are more accurately referred to as K. capensis.

Information about Kumanoa intorta on Algaebase.

Inforamion about K. intorta (as Batrachospermum intortum) on GenBank.

"Plants moderately mucilaginous, delicate or rigid, denude at the base; branching irregular and abundant; apices straight, apical cells embedded within the fascicles; 3.0-7.0 cm high, 300-600 µm in diameter. Whorls well developed, obconic or pear-shaped, becoming indistinct in older parts. Internode 150-700 µm long. Pericentral cells ovoid with 2-3 primary fascicles; rhizoidal filaments well developed, forming 2-3 layers of cylindrical cells. Primary fascicles straight, 6-12 cell-storeys, proximal cells cylindrical or elliptical, L/D 4-6; distal cells elliptical or obovoid, L/D 2-4; branching di- or trichotomous. Secondary fascicles abundant, covering the entire internode and as long as primary fascicles. Monosporangia arising from primary and secondary fascicles or involucral filaments, obovoid, 11.0-15.0 µm long, 9.0-12.0 in diameter.

Monoecious. Spermatangia spherical or sub-spherical, terminal or sub-terminal on primary or secondary fascicles, (5.0-)7.0-9.0 µm in diameter. Carpogonial branches helically twisted, arising from pericentral cells or proximal fascicle cells, composed of (6-)8-11 disc- or barrel-shaped cells; involucral filaments short, 1-3 cell-storeys; carpogonia 30.0-40.0 µm long; trichogynes club-shaped, unstalked, 6.0-9.0 µm in diameter. Carposporophytes 1 per whorl, dense, semi-spherical, higher than the whorl radius, 150-300 µm in diameter, 85-150 µm high; gonimoblast filaments 4-7 cell-storeys; cells cylindrical; carposporangia obovoid or elliptical, two types: small, 11.0-15.0 µm long, 8.0-11.5 µm in diameter; large, 17.0-25.0 µm long, 11.0-15.0 µm in diameter; bisporangia occasionally formed on gonimoblast filaments or loosely attached, obovoid with septum dividing the content into two unequal parts."

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.

Jao, C. C. 1941. Studies on the freshwater algae of China. IV. Subaerial and aquatic algae from NanYoh, Huna Part II. Sinensia 11: 241-361.

Plants monoecious, moderately mucilaginous, up to 7 cm high, 300-500 μm in diameter, alternately and irregularly branched, obconical, confluent, confluent, deep olive-green; primary fascicles dicho-tomously branched, short, 5-12 cell-storeys, cells fusiform, ellipsoidal; cortical filaments very much developed; secondary fascicles numerous, unbranched or slightly branched, 2-8 cell-storeys, cells cylindrical or ovoidal,terminal hairs rare; spermatangia spherical or hemispherical, (5-)7-9 μm in diameter, terminal or subterminal on fascicles; carpogonium-bearing branches constantly spiral, long, consisting of (6-)8-11 cells, arising from periaxial cells, or rarely terminal on fascicles; carpogonia with club-shaped, shortly, shortly stalked trichogyne; carposporophytes hemispherical, 150-190 μm in diameter, 87-100 μm high; carposporangia numerous, obovoidal or club-shaped, 12-14 μm in diameter, 18-23 μm long; monosporangia numerous, obovoidal, (9-)10-12 μm in diameter, 11-15 μm long, usually terminal on fascicles, or on involucral filaments.

Type locality= near Lung-Chu Sze, Pa-hsin, Szechwan, China in Eastern Asia. Growing on the submerged roots of willow in a spring-fed pond. Holotype= 1114 Herbarium= Salem College, USA (SC)