Aubrieta |
Aubrieta deltoidea |
|
---|---|---|
lilacbush |
garden aubrieta, lilacbush |
|
Habit | Perennials; (often loosely pulvinate or cespitose, caudex many-branched); not scapose; pubescent, trichomes stellate, short-stalked or sessile, mixed with coarser, stalked, forked, and simple ones. | Plants forming mats or cushions; densely pubescent, trichomes stellate, mixed with fewer, setiform and forked ones. |
Stems | erect to decumbent, branched basally, (slender). |
several from base (caudex), ascending to procumbent, 0.7–3(–5) dm, pubescent. |
Leaves | basal and cauline; petiolate or sessile [subsessile]; basal rosulate, petiolate, blade margins entire or dentate; cauline petiolate or sessile [subsessile], blade (base not auriculate), margins entire or dentate. |
|
Basal leaves | petiole 0.1–1 cm; blade obovate, oblanceolate, or rhombic, (0.5–)1–3(–4.5) cm × (2–)4–13(–20) mm, base cuneate to attenuate, margins entire or 1–3 teeth on each side, surfaces densely pubescent. |
|
Cauline leaves | petiolate or (distalmost) sessile; blade similar to basal. |
|
Racemes | (few- to several-flowered), elongated in fruit. |
1–13-flowered, (lax). |
Flowers | sepals erect, oblong, lateral pair saccate basally, (glabrous or pubescent); petals usually purple to violet, rarely white [pink], obovate [spatulate], (apex obtuse); stamens tetradynamous; filaments narrowly winged, (lateral pair with toothed appendage); anthers oblong [ovate]; nectar glands lateral, semi-annular, extrastaminal. |
sepals 6–10 × 1–1.5 mm; petals (10–)15–28 × 4–7(–8) mm, (attenuate to claw, 5–12 mm); filaments 5–10 mm; anthers 1.2–1.6 mm. |
Fruiting pedicels | erect to divaricate, slender. |
erect to ascending, 5–12(–16) mm. |
Fruits | siliques or, rarely, silicles, sessile, ellipsoid, [linear, oblong, or elliptic], not torulose, terete or latiseptate; valves each with distinct midvein, pubescent or, rarely, glabrous; replum rounded; septum usually complete, sometimes perforate; ovules 10–40 per ovary; (style persistent); stigma capitate. |
terete or slightly flattened, 0.7–2(–2.8) cm × 2–4(–4.8) mm; valves: trichomes long-setiform and forked, mixed with smaller, stellate ones; style 4–12 mm. |
Seeds | biseriate, flattened, not winged, ovoid [elliptical]; seed coat not mucilaginous when wetted; cotyledons accumbent. |
1.2–16 × 0.7–1 mm. |
2n | = 16. |
|
Aubrieta |
Aubrieta deltoidea |
|
Phenology | Flowering Apr–Jun. | |
Habitat | Rock crevices | |
Elevation | ca. 1600 m (ca. 5200 ft) | |
Distribution |
Europe; sw Asia; nw Africa [Introduced, Calif.] |
CA; s Europe (Mediterranean region); sw Asia; nw Africa [Introduced in North America] |
Discussion | Species 15 (1 in the flora). Aubrieta is taxonomically challenging and is centered primarily in Greece and Turkey. The delimitation of species is often difficult, possibly because species have resulted from hybridization. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Aubrieta deltoidea is known as an escape from the Mt. Hull area at the Mendocino-Lake counties boundary. It is highly variable in its native range, and several infraspecific taxa have been recognized. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 268. | FNA vol. 7, p. 269. |
Parent taxa | ||
Subordinate taxa | ||
Synonyms | Alyssum deltoideum | |
Name authority | Adanson: Fam. Pl. 2: 420. (1763) | (Linnaeus) de Candolle: Syst. Nat. 2: 294. (1821) |
Web links |
|