Agrostemma L.

Corncockles (en), Nielle (fr)

Genus

Angiosperms > Caryophyllales > Caryophyllaceae

Characteristics

Herbs, annual. Taproots stout. Stems simple or branched, terete. Leaves connate proximally into sheath, sessile; blade 1-veined or obscurely 3-veined, linear to narrowly lanceolate, apex acute. Inflorescences terminal, lax cymes or of solitary, mostly axillary flowers; bracts, when present, paired, foliaceous; involucel bracteoles absent. Pedicels erect. Flowers bisexual or rarely unisexual and pistillate; sepals connate proximally into tube, 25-62 mm; tube green, 10-veined, cylindric to ovoid, terete, commissures between sepals 1-veined, herbaceous; lobes green, 1-veined, linear-lanceolate, [shorter or] longer than tube, often equaling or longer than petals, margins green, herbaceous, apex acute; petals 5, purplish red or white, clawed, auricles absent, coronal appendages absent, blade apex obtuse, entire or briefly emarginate; nectaries near bases of filaments opposite sepals; stamens 10, 5 adnate to petals, 5 at base of gynoecium; filaments distinct; staminodes absent; styles (4-)5, clavate, 10-12 mm, with dense, stiffly ascending hairs proximally; stigmas (4-)5, subterminal, papillate (30×). Capsules ovoid, opening by (4-)5 ascending teeth; carpophore absent. Seeds ca. 30-60, black, reniform, laterally compressed, tuberculate, marginal wing absent, appendage absent; embryo peripheral, curved. x = 12.
More
Herbs, annual, erect, densely appressed-hairy throughout. Leaves opposite, linear-lanceolate; bracts herbaceous, leaf-like; stipules absent. Flowers solitary or in few-flowered dichasial cymes, 5-merous, bisexual. Calyx tubular, 10-veined, with 5 spreading, foliaceous lobes longer than petals. Petals 5, purple or rarely white, shorter than calyx, entire, tapering into a distinct claw; coronal scales absent. Stamens 10, with 5 united to petals. Ovary 1-celled; ovules numerous; styles 5. Capsule ovoid, opening by 5 teeth; carpophore absent. Seeds numerous, ± ovoid or reniform, echinulate/tuberculate.
Herbs annual. Stems erect. Leaves narrowly lanceolate to linear. Flowers in few flowered, lax dichasia. Calyx tube ovate or elliptic-ovate, with 10 longitudinal, raised veins; teeth 5, leaflike, linear, usually longer than tube. Androgynophore absent. Petals 5; limb usually shorter than calyx teeth, emarginate, gradually turning to claw; coronal scales absent. Stamens 10. Ovary 1-locular; styles 5, hairy, alternating with calyx lobes. Capsule ovoid, septicidally dehiscing by 5 teeth. Seeds numerous.
Cal-lobes 5, much longer than the coarsely 10-ribbed tube; pet 5, without auricles or appendages; stamens 10; styles (4)5; capsule dehiscent by (4)5 ascending teeth; annual with opposite, entire, exstipulate lvs. 2, Eurasia.
Life form annual
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system tap-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Often grown in cottage gardens. An occasional weed of wheat fields.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

Usage

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

Cultivation

Mode -
Germination duration (days) 14 - 21
Germination temperacture (C°) 12 - 18
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Agrostemma unspecified picture

Distribution

Agrostemma world distribution map, present in Australia, China, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:30097926-2
WFO ID wfo-4000000994
COL ID R25
BDTFX ID 85825
INPN ID 188908
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Agrostemma

Lower taxons

Agrostemma brachyloba Agrostemma githago