WorldFloraDB - Drosera filiformis

Characteristics

Plants forming winter hibernaculae, rosettes 1 cm diam.; stem base bulbous-cormose, composed of expanded petiole base, 1–2 cm, woolly. Leaves erect; stipules adnate to petioles for entire length, 10 mm, margins fimbriate, <forming woolly appearance of cormose base>; petiole not differentiated from blade; blade filiform, 8–25(–30) cm × 1 mm, <surfaces glandular-hairy, trichomes red to reddish purple, drying dark brown>. Inflorescences 4–12(–24)-flowered; scapes 6–26 cm, glabrous. <Pedicels glandular-pilose.> Flowers 10–20 mm diam.; sepals connate basally, oblong to elliptic, 4–7 × 2–2.5 mm, glandular-pilose; petals pink to purple-lavender, broadly ovate, 7–10(–12) × 5–15 mm, <apical margins erose>. Capsules 5–6 mm. Seeds black, ellipsoid, <abruptly caudate at both ends>, 0.5–0.8 mm, coarsely crateriform, pits in 16–20 lines. 2n = 20.

More

Lvs erect, 8–25 cm, covered with long, purple, glandular hairs, the blade not differentiated from the petiole; stipules adnate, fimbriate on the margins, forming matted brown wool at the base of the lvs; scape 6–22 cm, with 4–16 fls 1 cm wide; sep glandular hairy, 4–7 mm; pet purple, broadly ovate, erose at the tip; seeds black, 0.5–0.8 mm, ellipsoid, abruptly constricted near the ends, coarsely crateriform-pitted, the pits in 16–20 rows; 2n=20. Along the coast; Mass. and R.I. to Del.; S.C. to Fla. and La. July–Sept.

Life form

perennial

Growth form

herb

Growth support

-

Foliage retention

deciduous

Sexuality

hermaphrodite

Pollination

-

Spread

-

Mature width (meter)

0.1 - 0.5

Mature height (meter)

0.06 - 0.26

Root system

-

Rooting depth (meter)

-

Root diameter (meter)

-

Flower color

Blooming months

Jan	Feb	Mar
Apr	May	Jun
Jul	Aug	Sep
Oct	Nov	Dec

Fruit color

-

Fruiting months

-

Nitrogen fixer

-

Photosynthetic pathway

-

Environment

Light
Soil humidity
Soil texture	-
Soil acidity
Soil nutriment	-
Hardiness (USDA)

Usage

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

Cultivation

Can be grown by cuttings or seedlings.

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

Images

Distribution

Conservation status

Identifiers

LSID	urn:lsid:ipni.org:names:30210809-2
WFO ID	wfo-0000945925
COL ID	37QR6
BDTFX ID	-
INPN ID	-
Wikipedia (EN)	Link
Wikipedia (FR)	Link

Synonyms

Drosera filiformis Drosera leionema Drosera tenuifolia Filicirna filiformis Filicirna leionema Filicirna tenuifolia Drosera filiformis var. filiformis

Lower taxons

Drosera filiformis var. tracyi

WorldFloraDB 2024

Drosera filiformis Raf.

Threadleaf sundew (en)

Species

Angiosperms > Caryophyllales > Droseraceae > Drosera