Description
Key Characters:
Growth Form:
Plants perennial, acaulescent or caulescent, sometimes subscapose, sometimes arborescent, usually branching extensively, from woody, subterranean or aboveground caudices, or single stems.
Stems:
Roots:
Leaves:
Leaves simple.
In rosettes on caudices or at branch ends.
Blades linear-lanceolate, expanded basally, usually rigid, occasionally fleshy.
Apex mostly sharp-pointed.
Margins entire or denticulate, often filiferous and separating into elongated fibers.
Sessile.
Stipules absent.
Flowers:
Inflorescences erect or rarely pendent, paniculate or racemose, sometimes paniculate proximally and racemose distally, bracteate, occasionally pubescent; bracts ascending, erect, or rarely reflexed; peduncle sometimes scapelike, sometimes extending beyond leaves, sometimes pubescent.
Flowers bisexual (perfect); perianth campanulate or globose, usually less than 2.5 cm diameter.
Tepals 6, similar, in 2 series, petal-like, fleshy, distinct to or connate at base, whitish to cream or tinged slightly with green or purple, occasionally pubescent.
Stamens 6; filaments flattened, as wide as anthers, smooth, papillose, or granular, fleshy; anthers dehiscing longitudinally.
Ovary superior; pistil obovoid or oblong-cylindrical; usually green, 3-locular or 6-locular with false septa, 6-lobed; style white to dark green, often thick; stigmas usually 3, sometimes 1 and subcapitate, white to pale green, 1–2 mm.
Fruit:
Capsules or berries; erect or pendent.
Seeds many per locule; usually black; occasionally gray; flattened; round; rarely obovate or ovate.
Ploidy:
x = 25; 30
Habitat:
Elevation Range: