Arabis georgiana R.M.Harper

Georgia rockcress (en)

Species

Angiosperms > Brassicales > Brassicaceae > Arabis

Characteristics

Biennials; sparsely to moderately hirsute (at least basally), trichomes simple, mixed with fewer, short-stalked, forked ones, subsessile cruciform or 3-rayed stellate trichomes commonly on abaxial blade surfaces, sometimes plants glabrous distally. Stems simple or few from base (rosette), erect, unbranched or branched (few) distally, 3-7 dm, (hirsute basally, glabrous distally). Basal leaves: petiole 0.5-2 cm, (ciliate or not); blade spatulate, oblanceolate, or obovate, 1.5-6 cm × 5-15 mm, margins dentate, apex obtuse or acute, abaxial surface moderately to sparsely pubescent, trichomes subsessile stellate, adaxial surface subglabrate or sparsely stellate. Cauline leaves 7-26; blade oblong, lanceolate, or linear-lanceolate, 1.5-7 cm × 3-18 mm, base auriculate to subamplexicaul, margins dentate or entire, apex acute or obtuse, pubescent as basal leaves except distalmost leaves often glabrous. Racemes often simple. Fruiting pedicels erect to erect-ascending, 7-16 mm, (glabrous). Flowers: sepals oblong, 2.5-4.5 × 1-1.5 mm, lateral pair subsaccate basally; petals white, narrowly spatulate or oblanceolate, 6-9 × 1-1.5 mm, apex obtuse; filaments 3-4.5 mm; anthers oblong, 0.8-1 mm. Fruits erect to erect-ascending, (often subappressed to rachis), smooth, 4-7 cm × 0.7-0.8 mm; valves each with midvein extending full length or to middle; ovules 38-44 per ovary; style 0.7-1.8 mm. Seeds narrowly winged throughout, oblong, 0.9-1.9 × 0.5-0.7 mm; wing to 0.1 mm wide distally.
Life form biennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.7
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 7-9
Soil humidity 1-5
Soil texture 3-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

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

Cultivation

Mode -
Germination duration (days) 20 - 25
Germination temperacture (C°) 21
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Arabis georgiana world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:17020-2
WFO ID wfo-0000542229
COL ID G2DC
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Arabis georgiana