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. 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. SELECTED REFERENCES Firbank, L. G. 1988. Biological flora of the British Isles. 165. Agrostemma githago L. (Lychnis githago (L.) Scop.). J. Ecol. 76: 1232-1246. Hammer, K., P. Hanelt, and H. Knupffer. 1982. Vorarbeiten zur monographischen Darstellung von Wildpflanzensortimenten: Agrostemma L. (Studies towards a monographic treatment of wild plant collections: Agrostemma L.) Kulturpflanze 30: 45-96. 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. SELECTED REFERENCES Firbank, L. G. 1988. Biological flora of the British Isles. 165. Agrostemma githago L. (Lychnis githago (L.) Scop.). J. Ecol. 76: 1232-1246. Hammer, K., P. Hanelt, and H. Knupffer. 1982. Vorarbeiten zur monographischen Darstellung von Wildpflanzensortimenten: Agrostemma L. (Studies towards a monographic treatment of wild plant collections: Agrostemma L.) Kulturpflanze 30: 45-96. 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.General Information
Source: [
Source: [
Source: [
Literature
Source: [
Flora of China @ efloras.org
General InformationManual of Vascular Plants of Northeastern US and Canada
General InformationFlora of North America @ efloras.org
Literature
Name | Language | Country | |
---|---|---|---|
[Greek agros, field, and stemma, crown or wreath, alluding to the flowers' use in garlands] |
|