1068
Costus dubius
Synonym |
: |
Zingiber
dubium Afzel. |
Family |
:` |
Costaceae |
Flowering and
fruiting period |
: |
Throughout the year |
Distribution |
: |
Native of Camaroon
and Tanzania |
Endemic/Exotic |
: |
Exotic |
Uses |
: |
Ornamental |
Key
botanical characters: Terrestrial,
perennial rhizomatous herb, 2–3 m high; stem round, green, glabrous. Leaves
alternate, more spiral phyllotaxy, petiolate; petiole 0.5–1cm long, green,
glabrous; lamina 10.5–21 × 2.8–6 cm, ovate or lanceolate, green.
Inflorescence produced directly from underground rhizome, spike; peduncle 10–25
cm long; spike 6–15 × 4.1–6 cm, conical, ovate, globose or elongate, one or
two flowers opened at a time, green. Bract numerous,closely arranged, scarious,
smooth and shiny; c. 3.4 × c. 4.4 cm, ovate, green. Flower bisexual, white. |