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Teesdalia nudicaulis (L.) W.T.Aiton

Shepherd's cress (en), Téesdalie (fr), Téesdalie à tige nue (fr), Téesdalie à tiges nues (fr)

Species

Angiosperms > Brassicales > Brassicaceae > Teesdalia

Characteristics

Stems 0.5-1.5(-2) dm. Basal leaves: petiole 0.5-2.5(-3.5) cm; blade oblanceolate to obovate in outline, 0.3-1.5(-2) cm × 2-4(-7) mm, margins usually lyrate-pinnatifid, rarely dentate or entire; lateral lobes obtuse. Cauline leaves 0-4; blade linear to oblong. Fruiting pedicels 3-7 mm. Flowers zygomorphic ; sepals 0.5-0.8 (-1) × 0.4-0.6(-0.8) mm; petals oblong to obovate, abaxial pair 1.5-2.5 × 0.6-1 mm, adaxial pair 0.5-1 × 0.3-0.4 mm; stamens 6, tetradynamous; filaments 0.8-1 mm, (basal appendage white, ca. 1/2 its length); anthers 0.1-0.2 mm. Fruits 3-4.5 × 3-4.5 mm; style ca. 0.1 mm. Seeds 1-1.2 × 0.9-1 mm. 2n = 36.
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Annual herb 8–15 cm tall, rarely taller, erect, branching basally, glabrous or rarely with simple hairs. Leaves in a basal rosette, petiolate, 2–5 cm long, narrow, lyrate-pinnatifid, the lateral lobes short, rounded, the terminal segment broader, often 3-lobed; cauline leaves few, reducing. Sepals 1 mm long. Petals dimorphic; inner petals slightly longer than sepals, outer petals 2 mm long, white. Stamens 6; filaments with a white basal scale. Style very short. Silicula 3–4 mm long, elliptic-obovate to obcordate, narrowly winged above, emarginate; pedicels 3–3.5 mm long, spreading. Seeds 1–1.2 mm, ovoid.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination
Spread anemochory
Mature width (meter) -
Mature height (meter) 0.05 - 0.15
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light -
Soil humidity -
Soil texture 3-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Teesdalia nudicaulis habit picture by Pedroso Rui (cc-by-sa)
Teesdalia nudicaulis habit picture by Shoe Bean (cc-by-sa)
Teesdalia nudicaulis habit picture by Shoe Bean (cc-by-sa)

Leaf

Teesdalia nudicaulis leaf picture by Prieta Javier (cc-by-sa)
Teesdalia nudicaulis leaf picture by Prieta Javier (cc-by-sa)
Teesdalia nudicaulis leaf picture by Prieta Javier (cc-by-sa)

Flower

Teesdalia nudicaulis flower picture by Dominique Vioux (cc-by-sa)
Teesdalia nudicaulis flower picture by Pedroso Rui (cc-by-sa)
Teesdalia nudicaulis flower picture by Shoe Bean (cc-by-sa)

Fruit

Teesdalia nudicaulis fruit picture by Julien Lavenus (cc-by-sa)
Teesdalia nudicaulis fruit picture by Mariella Van Gemeren (cc-by-sa)
Teesdalia nudicaulis fruit picture by Maik Skoddow (cc-by-sa)

Distribution

Teesdalia nudicaulis world distribution map, present in Australia, Canada, France, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:1059969-2
WFO ID wfo-0000411015
COL ID 7BN59
BDTFX ID 67158
INPN ID 125831
Wikipedia (EN)
Wikipedia (FR) Link

Synonyms

Lepidium scapiferum Lepidium nudicaule Iberis nudicaulis Capsella nudicaulis Crucifera teesdalea Guepinia iberis Guepinia nudicaulis Iberis bursifolia Thlaspi nudicaule Teesdalia caulescens Teesdalia iberis Folis nudicaulis Teesdalia irregularis Teesdalia verna Guepinia nudicaulis Teesdalia nudicaulis
WorldFloraDB 2024