Zigadenus elegans |
Zigadenus glaberrimus |
|
---|---|---|
mountain death camas, zigadène élégant |
sandbog death camas |
|
Habit | Plants 2–8 dm, from bulbs; bulbs not clumped, tunicate, narrowly ovoid, 1.5–3 × 1–2 cm. | Plants 6–12 dm, from thick, twisted rhizomes. |
Stems | without persistent leaf bases. |
|
Leaves | proximal blades 10–30 cm × 3–15 mm. |
blade sometimes becoming reddish brown with age, 19–42 cm × 5–20 mm, glaucous abaxially. |
Inflorescences | loosely racemose to paniculate, 10–50-flowered, with 1–4 branches, 0.9–2.5 dm × 3–6 cm. |
loosely paniculate, 30–75-flowered, with 2–6 ascending branches, pyramidal, 10–60 × 5–12 cm. |
Flowers | perianth perigynous, rotate to rotate-campanulate, 15–20 mm diam.; tepals persistent in fruit, cream colored to greenish, ovate, 7–12 × 4–5 mm, somewhat narrowed at base; gland 1, obcordate; pedicel erect at anthesis, 1–2.3 cm, bracts often tinged with purple or pink, ovate, 5–20 mm. |
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. |
Capsules | narrowly conic, 10–20 mm. |
conic, 10–15 mm. |
2n | = 32. |
= 52. |
Zigadenus elegans |
Zigadenus glaberrimus |
|
Phenology | Flowering Jun–Aug. | Flowering mid Jul–Sep. |
Habitat | Moist grasslands, river and lake shores, bogs in coniferous forests | Pine bogs, savannas, sandy pinelands |
Elevation | 0–3600 m (0–11800 ft) | 0–100 m (0–300 ft) |
Distribution |
AK; AZ; CO; IA; ID; IL; IN; MD; MI; MN; MO; MT; NC; ND; NE; NM; NV; NY; OH; OR; PA; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NT; ON; QC; SK; YT; Mexico
|
AL; FL; GA; MS; NC; SC; VA
|
Discussion | Zigadenus elegans has been treated previously as comprising two varieties, or two subspecies (W. B. Zomlefer 1997b). The western var. or subsp. elegans tends to be a smaller plant with a raceme or a 1–2-branched panicle and glabrous, sometimes glaucous leaves and stems; while the eastern var. or subsp. glaucus tends to be a larger plant with a paniculate inflorescence and glaucous leaves and stems. Because there is considerable evidence of intergradation between the two entities toward the middle of the range, including overlapping flowering times, they have not been formally distinguished here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 26. | FNA vol. 26, p. 83. |
Parent taxa | Liliaceae > Zigadenus | Liliaceae > Zigadenus |
Sibling taxa | ||
Synonyms | Anticlea alpina, Anticlea chlorantha, Anticlea coloradensis, Anticlea elegans, Anticlea glauca, Anticlea gracilenta, Anticlea longa, Anticlea mohinorensis, Melanthium glaucum, Z. alpinus, Z. chloranthus, Z. coloradensis, Z. dilatatus, Z. elegans subsp. glaucus, Z. elegans var. glaucus, Z. glaucus, Z. gracilentus, Z. longus, Z. mohinorensis, Z. washakie | |
Name authority | Pursh: Fl. Amer. Sept. 1: 241. (1814) | Michaux: Fl. Bor.-Amer. 1: 214, plate 22. (1803) |
Web links |
|