Schoenocaulon dubium

(Michaux) Small

Fl. S.E. U.S., 250. 1903.

Endemic
Basionym: Helonias dubia Michaux Fl. Bor.-Amer. 1: 213. 1803
Synonyms: Sabadilla dubia (Michaux) Kuntze Schoenocaulon gracile A. Gray
Treatment appears in FNA Volume 26. Treatment on page 80.

Bulbs ellipsoid to ovoid, 2–4.2 × 1.2–3.5 cm diam.; rhizome generally unnoticeable. Leaves 4–7, 14–75 cm × 1.5–3.5 mm, shorter than raceme. Scape 55–87 cm. Racemes loose, 55–220-flowered, 11.5–35 cm, flowers well separated along axis. Flowers: tepals green, elliptic to narrowly ovate or obpandurate, 2–3.2 mm, fleshy, margins entire; auricles sometimes present; filaments subulate, 1.5 times tepal length. Capsules 2–3-locular, ovoid, 7.5–11 × 3.2–5.5 mm. Seeds 1–3 per locule, 4–6.3 × 1.3–1.8 mm. 2n = 16.


Phenology: Flowering spring–early summer.
Habitat: Sandy, moderately to well-drained soils in dry pineland and sandhills
Elevation: 0–100 m

Discussion

Selected References

None.

Lower Taxa

None.

"broad" is not a number."timestepallength" is not declared as a valid unit of measurement for this property.

... more about "Schoenocaulon dubium"
extrose +  and explanate +
cordate +  and linear +
Dawn Frame +
(Michaux) Small +
whorled +, opposite +  and alternate +
dilated +
Helonias dubia +
reticulate-veined +  and parallel-veined +
sheathing +  and involucrate +
persistent +
1;several +
membranous +
tunicate +  and scaly +
1.2cm +  and 3.5cm +
0.75 cm7.5 mm <br />0.0075 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0–100 m +
withering-persistent +
sessile +  and pedicellate +
unisexual +  and bisexual +
membranaceous +  and leathery +
Sandy, moderately to well-drained soils in dry pineland and sandhills +
persistent +
14 cm140 mm <br />0.14 m <br /> (75 cm750 mm <br />0.75 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
entire +  and crenulate or minutely denticulate +
many;several +
zygomorphic +  and actinomorphic +
Flowering spring–early summer. +
Fl. S.E. U.S., +
55-220-flowered +
spikelike +
11.5 cm115 mm <br />0.115 m <br /> (35 cm350 mm <br />0.35 m <br />) +
unnoticeable +
55 cm550 mm <br />0.55 m <br /> (87 cm870 mm <br />0.87 m <br />) +
wind-distributed +
0.4 cm4 mm <br />0.004 m <br /> (0.63 cm6.3 mm <br />0.0063 m <br />) +
1 +  and 3 +
ellipsoid +  and ovoid or conic irregularly compressed or angled +
0.13 cm1.3 mm <br />0.0013 m <br /> (?) +  and 0.18 cm1.8 mm <br />0.0018 m <br /> (?) +
staminodial +
1 +  and several +
persistent +
distinct +
Sabadilla dubia +  and Schoenocaulon gracile +
Schoenocaulon dubium +
Schoenocaulon +
species +
withering-persistent +
distinct +
obpandurate +, elliptic +  and narrowly ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
sepaloid +  and petaloid +
narrower +
3 +  and 2 +