Schumannianthus

Scientific name

Schumannianthus Gagnep.

Common names

common donax, bemban, bamban ai, bamban batu

Family

Marantaceae

Similar genera

Canna, Thalia

Native distribution

Southeast Asia

Species cultivated

Schumannianthus dichotomus (Roxb.) Gagnep.

Adventive distribution

information not available

Weed status

information not available

Habit

amphibious amphibious:
(adj) of a plant able to live on land or in water
to aquatic herb, often forming thickets

Brief description

Small to large shrub. Rhizomes black. Stems erect, round, ± woody, base and primary branches with 1-3 leafless sheaths, branching dichotomous. Leaves alternatealternate:
(adj) (of leaves) bearing one leaf per node; placed singly on the stem at different heights
; petiolepetiole:
(n) the stalk of a leaf
short-hairy, ligulateligulate:
(adj) possessing or with a ligule
; bladeblade:
(n) (syn. lamina) the flat, expanded part of a leaf, frond, or petal (excluding, e.g., the petiole)
ovate to ellipticelliptic:
(adj) in the form of an ellipse (oval)
, glabrousglabrous:
(adj) without hairs or scales
; apexapex:
(n) the point farthest from the point of attachment; the tip (often pointed)
acuteacute:
(adj) tapering to a sharp, pointed apex with more or less straight sides; broader than acuminate; forming an angle of less than 90 degrees
to acuminateacuminate:
(adj) tapering gradually to a point and forming more or less concave sides
; base rounded; venationvenation:
(n) the arrangement of veins in a leaf
pinnatepinnate:
(adj) in the form of a feather; of, e.g., leaflets, lobes, or veins: arranged in two rows along an axis
. Inflorescenceinflorescence:
(n) the arrangement of flowers on the floral axis
a terminalterminal:
(adj) at the apex
, branched paniclepanicle:
(n) an indeterminate, branched (often much-branched) inflorescence; the ultimate units may be of a different inflorescence type
borne on a pedunclepeduncle:
(n) the stalk of a flower cluster or inflorescence
dilated at the top. Flowers in pairs: one terminalterminal:
(adj) at the apex
, one in the upper third, both pedicellatepedicellate:
(adj) borne on a pedicel
; bracts lanceolatelanceolate:
(adj) lance-shaped; widest point below the middle, tapering to the apex
, keeledkeeled:
(adj) having a keel; sharply creased
, apexapex:
(n) the point farthest from the point of attachment; the tip (often pointed)
acuteacute:
(adj) tapering to a sharp, pointed apex with more or less straight sides; broader than acuminate; forming an angle of less than 90 degrees
, papery, deciduousdeciduous:
(adj) shedding of parts at the end of their growing period, as with leaves; those trees or shrubs that drop their leaves at the end of the season
; bracteoles small, fleshy, glandular; flowers white except for yellow on staminodes; sepals 3, lanceolatelanceolate:
(adj) lance-shaped; widest point below the middle, tapering to the apex
to triangular, apexapex:
(n) the point farthest from the point of attachment; the tip (often pointed)
acuminateacuminate:
(adj) tapering gradually to a point and forming more or less concave sides
; corollacorolla:
(n) the inner whorl(s) of the perianth; all the petals of a flower
basally tubulartubular:
(adj) (of a corolla, perianth, calyx tube or other structure) (1) tube-shaped; cylindrical: narrow and elongate with more or less straight sides; (2) having segments fused into a tube (of any shape)
, lobes 3, oblongoblong:
(adj) two to four times longer than wide, with +/- parallel sides
to lanceolatelanceolate:
(adj) lance-shaped; widest point below the middle, tapering to the apex
, spreading; staminodestaminode:
(n) a sterile stamen, not producing pollen; may be inconspicuous, petaloid, or showy
tube inconspicuous, outer staminodes 2, obovateobovate:
(adj) ovate, with the narrow end at the base
, petaloidpetaloid:
(adj) resembling a petal in appearance
, callous staminodestaminode:
(n) a sterile stamen, not producing pollen; may be inconspicuous, petaloid, or showy
obovateobovate:
(adj) ovate, with the narrow end at the base
, vaguely lobedlobed:
(adj) divided into (usually rounded) segments
, hooded staminodestaminode:
(n) a sterile stamen, not producing pollen; may be inconspicuous, petaloid, or showy
shorter, narrower, with single laterallateral:
(adj) on or pertaining to the side of an organ or structure
lobe, suborbicular, fertilefertile:
(adj) producing viable seed, spores, or pollen; capable of reproducing
stamen with petaloidpetaloid:
(adj) resembling a petal in appearance
appendageappendage:
(n) a projecting part of a structure
; stylestyle:
(n) in a flower, the narrow and elongated part of the pistil between the stigma and the ovary
curved, with stigmatic cavity.

Natural habitat

in swamps and along rivers

Additional comments

This genus comprises two species: Schumannianthus dichotomus and S. monophyllus Suksathan, Borchs. & A.D. Poulsen. These are harvested from their natural habitat to create patidoi mats. The flowers are distinctive.