Zigadenus nuttallii

(A. Gray) S. Watson

Botany (Fortieth Parallel), 343. 1871.

Common names: Nuttall’s death camas
Endemic
Basionym: Amianthium nuttallii A. Gray Ann. Lyceum Nat. Hist. New York 4: 123. 1837
Synonyms: Toxicoscordion nuttallii (A. Gray) Rydberg Toxicoscordion texense Rydberg Zigadenus texensis (Rydberg) J. F. Macbride
Treatment appears in FNA Volume 26. Treatment on page 86. Mentioned on page 83.

Plants 3–7.5 dm, from bulbs; bulbs not clumped, tunicate, ovoid, 15–40 × 9–35 mm. Leaves: proximal blades 15–45 cm × 3–15 mm. Inflorescences usually paniculate, 20–60-flowered, with 1–8 branches, narrow, terminal raceme pyramidal in early anthesis, 3–30 × 3–7 cm, proximal branches 1/10–1/2 length of entire inflorescence, ascending at 10°–60° angle. Flowers: perianth hypogynous, campanulate, 10–15 mm diam.; tepals persistent in fruit, cream colored, ovate, 3–8 × 1–4 mm, outer unclawed or rarely clawed to 5 mm, apex usually obtuse; gland 1, obovate, distal margins obscure, thin; filaments straight, usually equaling tepals, occasionally longer, thickened proximally; pedicel usually ascending in fruit, occasionally perpendicular to stem, 10–35 mm, bracts green, somewhat falcate, 3–20 mm. Capsules 8–16 × 3–8 mm. 2n = 32.


Phenology: Flowering Mar–Jun.
Habitat: Tallgrass prairie, calcareous glades, rocky hillsides
Elevation: 500–1200 m

Distribution

V26 85-distribution-map.jpg

Ark., Kans., Mo., Okla., Tex.

Discussion

Selected References

None.

Lower Taxa

None.

"thicker" is not a number.

... more about "Zigadenus nuttallii"
60 +  and 10 +
introrse +, extrorse +  and transverse +
reniform +
Fayla C. Schwartz +
(A. Gray) S. Watson +
whorled +, opposite +  and alternate +
dilated +
Amianthium nuttallii +
reticulate-veined +  and parallel-veined +
falcate +
membranous +
1 +  and 8 +
not clumped +
15mm +  and 40mm +
0.9 cm9 mm <br />0.009 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Nuttall’s death camas +
Ark. +, Kans. +, Mo. +, Okla. +  and Tex. +
500–1200 m +
connate-coroniform +  and dilated +
staminate +  and pedicellate +
protandrous +  and bisexual +
loculicidal +  and septicidal +
membranaceous +  and leathery +
obovate +
Tallgrass prairie, calcareous glades, rocky hillsides +
persistent +
many;several +
perpendicular +  and ascending +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
campanulate +
Flowering Mar–Jun. +
tapering +
15 cm150 mm <br />0.15 m <br /> (45 cm450 mm <br />0.45 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1/10 length of entire inflorescence;1/2 length of entire inflorescence +
Botany (Fortieth Parallel), +
contractile +
ellipsoid +
wind-distributed +
2 +  and 20 +
flattened +  and elongate +
W2 +  and Endemic +
adnate +  and free +
staminodial +
rudimentary +
barely larger +
Toxicoscordion nuttallii +, Toxicoscordion texense +  and Zigadenus texensis +
Zigadenus nuttallii +
Zigadenus +
species +
cream colored +
persistent +
1mm;4mm +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
sepaloid +  and petaloid +
narrower +
rhizomatous +, bulbous +  and subscapose +
3 +  and 2 +
26 +, 11 +  and 8 +