Eruca |
Brassicaceae tribe Brassiceae |
|
---|---|---|
garden-rocket, rocket-salad |
|
|
Habit | Annuals; not scapose; glabrous, hirsute, or hispid, (trichomes often retrorse). | Annuals, biennials, or perennials [shrubs]; eglandular. |
Stems | erect, branched [unbranched]. |
|
Leaves | basal and cauline; petiolate or sessile; basal rosulate or not, petiolate, blade margins usually lyrate-pinnatifid or pinnatipartite, rarely bipinnatisect or undivided; cauline shortly petiolate or sessile, blade (base not auriculate), margins entire, dentate, or pinnatifid. |
|
Cauline leaves | petiolate or sessile; blade base auriculate or not, margins entire, dentate, serrate, or pinnately lobed. |
|
Trichomes | absent or simple. |
|
Racemes | (corymbose), greatly elongated in fruit. |
usually ebracteate, often elongated in fruit. |
Flowers | sepals (sometimes persistent), erect, oblong [linear], (connivent), lateral pair saccate basally; petals cream or yellow (with dark brown or purple veins), broadly obovate, claw differentiated from blade (± equal to sepals, apex obtuse or emarginate); stamens strongly tetradynamous; filaments not dilated basally; anthers oblong or linear, (base sagittate, apex obtuse); nectar glands (4), distinct, median pair present. |
actinomorphic; sepals erect, ascending, or spreading, lateral pair saccate or not basally; petals white, cream, yellow, pink, lilac, lavender, or purple, claw present, often distinct; filaments unappendaged, not winged; pollen 3-colpate. |
Fruiting pedicels | erect to ascending, stout. |
|
Fruits | siliques, dehiscent, sessile, segments 2, linear or oblong [elliptic], not torulose, terete or slightly 4-angled; (terminal segment indehiscent, flattened and ensiform, seedless); valves each with prominent midvein, (coriaceous), glabrous, hirsute, or hispid; replum rounded; septum complete, (membranous); ovules 10–50 per ovary; (style obsolete); stigma conical, 2-lobed (lobes connivent, decurrent). |
silicles or siliques, dehiscent or indehiscent, usually segmented, usually latiseptate or terete (subterete or 4-angled in Erucastrum) [angustiseptate]; ovules (1–)2–276[–numerous] per ovary; style usually distinct (absent in Cakile, obscure in Carrichtera, obsolete in Eruca); stigma entire or strongly 2-lobed (sometimes slightly 2-lobed in Cakile). |
Seeds | biseriate, plump, not winged, [sub]globose or ovoid; seed coat (minutely reticulate), mucilaginous when wetted; cotyledons conduplicate. |
biseriate, uniseriate, or aseriate; cotyledons usually conduplicate, rarely accumbent or incumbent (in Cakile). |
x | = 11. |
|
Eruca |
Brassicaceae tribe Brassiceae |
|
Distribution |
Eurasia; Africa [Introduced in North America; introduced also in Mexico, Central America, South America, Asia, Atlantic Islands, Australia] |
North America; Eurasia; n Africa [Introduced widely] |
Discussion | Species 1. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Genera 46, species ca. 245 (13 genera, 28 species in the flora). The generic boundaries in Brassiceae are largely artificial, and the number of genera may be substantially reduced. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 434. | FNA vol. 7, p. 419. |
Parent taxa | ||
Subordinate taxa | ||
Name authority | Miller: Gard. Dict. Abr. ed. 4, vol. 1. (1754) | de Candolle: Mém. Mus. Hist. Nat. 7: 242. (1821) |
Web links |
|