Roscoea humeana Balf.F. & W.W.Sm.

Species

Angiosperms > Zingiberales > Zingiberaceae > Roscoea

Characteristics

Plants 13--25 cm tall. Leaves 4--6, appearing after anthesis; ligule ca. 2 mm; leaf blade broadly lanceolate or ovate-lanceolate, 10--30 × 3--6 cm, glabrous, apex acute. Inflorescence with peduncle enclosed by leaf sheaths; bracts lanceolate, usually much shorter than calyx. Flowers 1 to many opening together, violet, purple, pink, white, or yellow. Calyx narrowly tubular, 10--14 cm, apex oblique, 2-lobed. Corolla tube slightly longer than calyx; central lobe broadly ovate, 3--4 × 2.5--3 cm, base erect, narrow, cucullate, apex rounded, apiculate; lateral lobes oblanceolate, 3--3.5 × ca. 1.5 cm. Lateral staminodes white tinged with purple, oblanceolate, 1.5--1.7 cm. Labellum reflexed, obovate, usually smaller than central lobe of corolla, 2--2.5 × ca. 3 cm, apically 2-cleft to near base, margin cristate; claw hard. Filament ca. 5 mm; anther white, ca. 1.2 cm; connective spur yellowish green, 6--8 mm. Style ca. 10 cm; stigma turbinate, pilose. Ovary cylindric, ca. 1 cm. Capsule oblong, ca. 2.5 cm × 5 mm. Fl. Apr--Jul. 2 n = 24*.
Life form -
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.1 - 0.5
Mature height (meter) 0.12 - 0.38
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-6
Soil humidity -
Soil texture -
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 9-10

Usage

Uses environmental use
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by divisions, seedlings or tubers.
Mode divisions seedlings tubers
Germination duration (days) 30 - 365
Germination temperacture (C°) 10 - 12
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Roscoea humeana unspecified picture

Distribution

Roscoea humeana world distribution map, present in China

Identifiers

LSID -
WFO ID wfo-0000523616
COL ID 6X9S9
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Roscoea sichuanensis Roscoea humeana

Lower taxons

Roscoea humeana f. lutea Roscoea humeana f. alba Roscoea humeana f. tyria