Drosera burmanni Vahl

Species

Angiosperms > Caryophyllales > Droseraceae > Drosera

Characteristics

Herbs annual or biennial, with few fibrous roots. Stem unbranched, extremely short, sometimes to 1 cm when growing in shade, not forming a tuber below ground. Leaves forming a flat rosette, subsessile or petiolate; stipule 3-7 mm, connate with petiole at base, 3-fid, lobes laciniate; petiole short or absent; leaf blade yellowish green or red to reddish violet, cuneate to obovate-spatulate, 6-10 × 5-7 mm, base attenuate, with glandular trichomes or glabrous, apex fimbriate. Inflorescence scapiform; racemes 1 or 2, 6-22 cm, glabrous or with white or red to reddish violet glands, 2-19-flowered; bracts simple, hastate, 1-3 mm; pedicels erect, 1-7 mm. Sepals 5, united at base, light green, red, or reddish violet, narrowly oblong, 2-3 mm, striate, tuberculate, abaxially with short, glandular hairs and white glands. Petals white to light red to reddish violet, obovate, ca. 4 × 2-3 mm. Stamens 5, ca. 3 mm. Ovary subglobose, glabrous; placentas 5(or 6); styles 5(or 6), filiform, 2-3 mm, incurved; stigma toothlike. Capsule 5-or 6-valved. Seeds dark-brown to black, veined. Fl. and fr. all year. 2n = 20*.
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Herb with fibrous roots. Stem very short. Leaves in a flat basal rosette, broadly cuneate-obovate to flabellate; lamina 8–10 mm long, 5–6 mm wide, narrowed to a very short petiole or sessile; stipules trifid, to 8 mm long, the lobes laciniate. Racemes 1–3, 6–15 cm long, sometimes glandular in upper half, 3–10-flowered; bracts usually 3-partite, 1–3 mm long; pedicels 3–4 mm long, erect. Calyx 2.5–3 mm long, divided almost to base into narrowly oblong, obtuse lobes, striate, tuberculate. Petals obovate, 4 mm long, white or pink. Styles 5, filiform, 2.5 mm long, shortly penicillate at apices. Seeds very small, minutely pitted, black.
Rosulate. Leaves red or green, appressed to the soil, obovate to orbicular; blade 6-10 by 4-6 mm. Stipules mostly 3-parted, each segment with lanceolate acute lobes. Peduncles 1-3, erect, 4-27 cm, rhachis 1-9.5 cm, 2-25-flowered. Pedicels erect, 1.5-4 mm. Sepals oblong, blunt, 2.5-3 mm long. Petals white, obovate, ca 4 mm long. Styles 5, at their apex split into very short lobes. Capsule ca 1.5 mm long. Seeds dark, very fine-scrobiculate.
Life form
Growth form herb
Growth support free-standing
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.02 - 0.2
Root system fibrous-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

On open sandy or peaty soils, mostly between grass, often not far from the sea, in many islands very local, apparently under everwet climatic conditions, 2-900(-1400) m. Fl. fr. Jan.-March. Highest locality is in M. Celebes (Mamasa).
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Occurs in scattered localities in northern and central deserts.
Light 7-9
Soil humidity 7-9
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-11

Usage

Uses medicinal
Edible -
Therapeutic use Rubefacient (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 30 - 90
Germination temperacture (C°) 12 - 18
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Drosera burmanni unspecified picture

Distribution

Drosera burmanni world distribution map, present in Australia, China, Micronesia (Federated States of), Hong Kong, Indonesia, India, Japan, Malaysia, Palau, and Thailand

Conservation status

Drosera burmanni threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:321803-1
WFO ID wfo-0000945853
COL ID 37QQL
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Drosera burmanni Drosera dietrichiana Drosera burmanni var. dietrichiana Drosera indica var. dietrichiana