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Aletris gracilis Rendle

Comprehensive Description

    General Description
    provided by Plants of Tibet
    Plant glabrous throughout. Rhizome surrounded by a dense collar of persistent fibers from disintegrated leaf bases. Leaves 5 to numerous, usually laxly tufted, linear, 2-20 cm long, 2-7 mm wide. Scape 7-40 cm. Raceme 2-15 cm, not covered with viscid secretion, laxly 5-40-flowered. Flowers distinctly pedicellate; pedicel 1-10 mm; bract borne at or near base of pedicel, narrowly lanceolate, 3-9 mm, shorter than flower (rarely a few bracts at base of raceme slightly longer than flower), apex obtuse to subacute; bracteole borne on proximal 1/2 of pedicel above bract. Perianth yellowish, whitish, or pinkish, 4-5 mm; tube broadly funnelform; lobes strongly recurved or revolute, narrowly oblong or oblong, 2-3 × ca. 1 mm, 1.5-2 × tube length, apex obtuse to rounded or truncate. Capsule narrowly ovoid, 4.5-7 mm long, 2.5-3.5 mm wide, apex of valves abruptly narowed; style 0.5-2 mm; stigma conspicuously thickened, capitate.

Distribution

    Distribution
    provided by Plants of Tibet
    Aletris gracilis is occurring in SE Xizang, NW Yunnan of China, Bhutan, NE India, N Myanmar, Sikkim.
    Distribution
    provided by eFloras
    Himalaya (E. Nepal to Bhutan), Burma, S.E. Tibet.
    Distribution
    provided by eFloras
    SE Xizang, NW Yunnan [Bhutan, NE India, N Myanmar, Sikkim].

Morphology

    Comments
    provided by eFloras
    The type of Aletris gracilis corresponds with A. stelliflora not A. laxiflora as given in FRPS, so the name A. gracilis has priority over A. stelliflora which was described in 1936. Aletris gracilis is easily distinguished from A. laxiflora by its completely glabrous raceme rachis and pedicels.
    Description
    provided by eFloras
    Plant glabrous throughout. Rhizome surrounded by a dense collar of persistent fibers from disintegrated leaf bases. Leaves 5 to numerous, usually laxly tufted, linear, 2--20 cm × 2--7(--9) mm. Scape 7--40 cm. Raceme 2--15 cm, not covered with viscid secretion, laxly 5--40-flowered. Flowers distinctly pedicellate; pedicel 1--10 mm; bract borne at or near base of pedicel, narrowly lanceolate, 3--9(--16) mm, shorter than flower (rarely a few bracts at base of raceme slightly longer than flower), apex obtuse to subacute; bracteole borne on proximal 1/2 of pedicel above bract. Perianth yellowish, whitish, or pinkish, 4--5 mm; tube broadly funnelform; lobes strongly recurved or revolute, narrowly oblong or oblong, 2--3 × ca. 1 mm, 1.5--2 × tube length, apex obtuse to rounded or truncate. Capsule narrowly ovoid, 4.5--7 × 2.5--3.5 mm, apex of valves abruptly narowed; style 0.5--2 mm; stigma conspicuously thickened, capitate. Fl. Jul--Sep, fr. Sep--Oct.
    Elevation Range
    provided by eFloras
    3000-3200 m

Diagnostic Description

    Diagnostic Description
    provided by Plants of Tibet
    Aletris gracilis is close relative of Aletris cinerascens, but differs from the latter in its rhizome surrounded by mass of fibers from disintegrated leaf bases (vs. not surrounded by mass of fibers but sometimes by persistent, dead leaves), capsule with persistent stigma conspicuously thickened and capitate (vs. not or only slightly thickened).
    Synonym
    provided by eFloras
    Aletris stelliflora Handel-Mazzetti.

Habitat

    Habitat
    provided by Plants of Tibet
    Growing in alpine swamps, alpine grasslands, bamboo thickets, thicket margins, grassy cliffs, rocks; 2500-3900 m.
    Habitat
    provided by eFloras
    Alpine swamps, alpine grasslands, bamboo thickets, thicket margins, grassy cliffs, rocks; 2500--3900 m.

Cyclicity

    Cyclicity
    provided by Plants of Tibet
    Flowering from July to September; fruiting from September to October.