Agave filifera Salm-Dyck

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Description: Agave filiferaSN|556]]SN|10450]] is a small to medium sized agave that forms attractive rosette of leathery leaves each ending in a stout stiff spine. The leaves are dark green in colour with ornamental white threads along the edge. This agave will eventually throw up a flower stem 2,5 m at the end of which are purple and green blooms. However, the plant is mainly grown for the attractive rosette of leaves. The main rosette dies after blooming but usually new plantlets sprout from the base to start a new life cycle. It produces suckers freely.
Rosettes: Trunkless, dense, 30 to 65 cm across, with 60-100 thick filiferous leaves.
Leaves: 15-30(-40) cm long, 2-4(-5) cm wide, straight, lanceolate, long-tapering to the apex, narrowed towards the base, broadest in middle, convex above and below from base to mid-blade, stiff, spreading and somewhat upcurved, leathery, smooth, shiny dark green with 2 or 3 bud-prints (white lines) on the surface. Margins pale, horny, splitting off as 5 or 6 long, thin threads. Terminal spine 1-2 cm, brown. later grey, openly grooved above, rounded below.
Inflorescence: Spike, tapered, bottelbrush-like, up to 2,5 m tall flowers very dense through upper half of shaft set with long-caudate recurving bracts.
Flowers: 3-3,5 cm long, bell-like, ascending-outcurving on thick short pedicels, greenish at first, later reddish. Ovary spindle-like, angulate, about 13-15 mm long. Tube and neck, grooved, funnelform. Tepals equal, 14 long and 4 mm wide, recurving, lanceolate, apiculate. Filaments 30-35 mm long, slender, reddish, with a high knee, anthers 7-12 mm long, reddish.
Remarks: It is closely related to Agave schidigeraSN|10450]]SN|556]], from which it is separable by its cespitose habit, its shorter thicker leaves convex beneath, and smaller flowers with a shorter tube.

Agave filifera (llifle.com)