Agrostemma

Linnaeus

Sp. Pl. 1: 435. 1753

,

Gen. Pl. ed. 5, 198. 1754

Etymology: Greek agros, field, and stemma, crown or wreath, alluding to the flowers’ use in garlands
Treatment appears in FNA Volume 5. Treatment on page 214. Mentioned on page 4, 6.
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.

Distribution

Eurasia, introduced worldwide.

Discussion

Species 2 (1 in the flora).

Agrostemma brachyloba (Fenzl) Hammer (A. gracilis Boissier), a species native to Greece and Asia Minor, has been reported as a garden waif in Boulder, Colorado, where it persisted for at least four years (W. A. Weber et al. 1979). It differs from A. githago in that its calyx lobes are shorter (rather than longer) than the calyx tube, and its petals, spotted on the limb, are longer (rather than shorter) than the calyx lobes.

Lower Taxa

Facts about "Agrostemma"
AuthorJohn W. Thieret +
AuthorityLinnaeus +
DistributionEurasia + and introduced worldwide. +
EtymologyGreek agros, field, and stemma, crown or wreath, alluding to the flowers’ use in garlands +
IllustratorYevonn Wilson-Ramsey +
Introducedtrue +
Publication titleSp. Pl. + and Gen. Pl. ed. +
Publication year1753 + and 1754 +
Referencefirbank1988a + and hammer1982a +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse grained fna xml/V5/V5 439.xml +
SynonymsCaryophyllaceae subfam. Silenoideae +
Taxon familyCaryophyllaceae +
Taxon nameAgrostemma +
Taxon parentCaryophyllaceae subfam. Caryophylloideae +
Taxon rankgenus +
VolumeVolume 5 +