Zigadenus glaberrimus
Zigadenus densus
sandbog death camas
black snakeroot, crow poison, Osceola's plume, pine-barren death camas
blade sometimes becoming reddish brown with age, 19–42 cm × 5–20 mm, glaucous abaxially.
proximal blades 10–50 cm × 2–12 mm.
loosely paniculate, 30–75-flowered, with 2–6 ascending branches, pyramidal, 10–60 × 5–12 cm.
racemose or paniculate, 40–100-flowered, cylindrical, 4–15 × 2.5–5 cm.
perianth hypogynous, 20–30 mm diam.;
tepals persistent in fruit, white to cream colored, ovate to lanceolate, 9–15 × 3–5 mm, somewhat contracted at base;
glands 2, elliptic, margins thickened;
pedicel bracts ovate, 5–15 mm.
perianth hypogynous, 5–10 mm diam.;
tepals persistent in fruit, cream colored to greenish, ovate to elliptic, 3–5 mm, narrowed but not sharply contracted basally;
gland 1, obscure;
pedicel 1–2 cm, bracts often tinged with red, lanceolate, 2–12 mm.
conic, 10–15 mm.
narrowly conic, 10–20 mm.
= 52.
Zigadenus glaberrimus
Zigadenus densus
As treated here, Zigadenus densus includes Z. leimanthoides (W. W. McDearman 1984). These two entities are distinct in some parts of the range, but intergrade in size, inflorescence morphology, and flowering time in the Gulf coast region. The size of the plant (determined by age and environment) seems to affect inflorecence morphology, smaller plants bearing simple racemes and larger plants developing compound ones. Plants in more mountainous habitats develop paniculate inflorescences. Recognition of the two taxa at the varietal level may eventually be desirable.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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