Iberis umbellata L.

Herb

Iberis species are dwarf annual or perennial herbs or undershrubs, glabrous or hairy, not scapose. Rootstocks taproot. Stem erect or decumbent, leafy, simple or usually branched, angular, glabrous or pubescent. Basal leaves simple, rosulate or not, linear lanceolate to oblong, base cuneate to attenuate, margin entire to pinnatifid, apex acute to acuminate, somewhat fleshy, petiole short to sessile, cauline leaves usually similar but smaller, petiole subsessile to sessile. Inflorescence racemes, lax, few to many flowered, elongated or not in fruit, ebracteate. Flowers bisexual, white, purplish, pink, pedicel erect, divaricate, slender, ascending or descending, sepals 4, ovate-oblong, lateral pair base not saccate, apex obtuse, petals 4, obovate-oblong, outer upper pair larger than inner pair, base cuneate, margins entire, apex obtuse. Stamens 6, filaments not dilated near the base, anthers linear-oblong, nectar glands 4, lateral confluent and subtending bases of stamens. Ovary superior, linear, ellipsoid-cylindrical, bicarpellary, ovule 2 or more. Fruit silicula, ovate-suborbicular, angustiseptate, keeled, winged at the apex, bilocular, base and apex nearly rounded, subglabrous or slightly covered with bipartite appressed hairs, midrib prominent, torulose, valves not veined, glabrous, replum rounded, septum complete, style distinct, stigma capitates sometimes bilobed. Seeds uniseriate or biseriate, flattened or compressed, brown, ovate-ovoid, winged, minutely reticulate, mucilaginous or not when soaked, cotyledons accumbent.

Iberis species flowers are complete, bisexual, i.e., with functional male (androecium) and female (gynoecium), including stamens, carpels and ovary. Pollination is entomophilous i.e., by insects, or cleistogamy i.e., by self or allogamy i.e., by cross pollination. Flowering/Fruiting: May—July.

Seeds may be dispersed by autochory i.e., self dispersal, anemochory i.e., wind dispersal, zoochory i.e., dispersal by birds or animals, anthropochory i.e., dispersal by humans.

Annual herbs, not scapose, subglabrous or sparsely hairy, about 10-40 cm tall. Rootstocks slender, taproot. Stem erect leafy, simple or branched, angular, glabrous or pubescent. Basal leaves absent, cauline leaves simple, linear lanceolate-elliptic, about 3-8 x 0.5-1.5 cm across, base cuneate, margin entire or subentire with shallow denticulate teeth, apex acute, somewhat fleshy, petiole very short to sessile. Inflorescence umbellate racemes, 10-40 flowered, not elongated in fruit, ebracteate. Flowers bisexual, white, pink, pale purplish, fragrant, forming dense clusters, pedicel erect, filiform, divaricate, slender, ascending, about 0.5-1 cm long, sepals 4, oblong, lateral pair base not saccate, apex obtuse, about 3.5-5 mm long, petals 4, obovate-oblong, outer upper pair larger about 10-15 x 5-7 mm across, inner pair smaller about 5-10 x 2-5 mm across, base cuneate, margins entire, apex obtuse, claw distinct. Stamens 6, filaments not dilated near the base, anthers ovate-oblong, nectar glands 4, lateral confluent and subtending bases of stamens. Ovary superior, linear, ellipsoid-cylindrical, bicarpellary, ovules 2 or more. Fruit silicula, sessile, ovate-obovate, angustiseptate, keeled, winged at the apex, about 8-10 x 5-8 mm across, bilocular, apically notched, glabrous, midrib prominent, torulose, replum rounded, septum complete, style slender, about 3-4.5 mm long, stigma capitates sometimes bilobed. Seeds flattened or compressed, brown, broadly ovate, orbicular to reniform, narrowly winged, about 2-3 mm across, minutely reticulate, cotyledons accumbent.

Iberis species are susceptible to various insect pests, virus, mildews and moulds.

Notes: Western Ghats, Cultivated, Native of Southern Europe

Open areas

Cultivated in gardens.

Not evaluated (IUCN).

Cultivated as ornamental in gardens.