Yucca elata var. verdiensis

(McKelvey) Reveal in A. Cronquist et al.

in A. Cronquist et al., Intermount. Fl. 6: 533. 1977.

Endemic
Basionym: Yucca verdiensis McKelvey Yuccas Southw. U.S. 2: 98, plate 35. 1947
Treatment appears in FNA Volume 26.
Revision as of 05:11, 30 July 2020 by imported>Volume Importer
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Plants primarily caulescent, rarely acaulescent, 1.5–3.5 m. Stems 1–1.5 m. Leaf-blade 25–45 × 0.2–0.6 (–1.3) cm. Inflorescences paniculate, distally racemose, 7–13 dm; branches 1–3.5 dm; peduncle 1–1.5 m. Flowers: tepals 3.2–4.5 × 1.3–2 cm; filaments 1.5–2.5 cm; anthers (2–) 2.5–4.8 mm; pistil 2–2.5 cm. Capsules 4–4.5 × 2–4 cm.


Phenology: Flowering late spring.
Habitat: Rocky hillsides, canyons
Elevation: 300–1900 m

Discussion

S. D. McKelvey (1938–1947) wondered if Yucca elata var. verdiensis might be a mountain variety of Y. angustissima. On the other hand, she pointed out the differences between the two taxa and stated that the features of the former bear “no resemblance to those of Y. angustissima.” J. M. Webber (1953) suggested that var. verdiensis is a hybrid between var. elata and Y. angustissima.

Selected References

None.

Lower Taxa

None.

"thick" is not a number. "thin" is not a number."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property. "dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."thin" is not a number.

0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
longitudinal +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
glandular-pubescent +  and glandular +
tapering +
William J. Hess +  and R. Laurie Robbins +
(McKelvey) Reveal in A. Cronquist et al. +
Yucca verdiensis +
elliptic +, ovate +, oblanceolate +, lanceolate +  and linear +
expanded +
fleshy +  and rigid +
scale-like +
4 cm40 mm <br />0.04 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
300–1900 m +
elongated +
2.5 cm25 mm <br />0.025 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
flattened +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
broadened +
septicidal +, 2cm +  and 4cm +
oblong-cylindric +
constricted +
fleshy +  and dry +
Rocky hillsides, canyons +
racemose +  and paniculate +
mostly narrowly ovoid +  and ovoid +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
25 cm250 mm <br />0.25 m <br /> (45 cm450 mm <br />0.45 m <br />) +
0.2cm;0.6cm +
long-lived +  and annual +
0.2cm;1.3cm +
6-lobed +
not +  and articulate +
2.5 cm25 mm <br />0.025 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
100 cm1,000 mm <br />1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
globose +  and campanulate +
semisucculent +
Flowering late spring. +
2 cm20 mm <br />0.02 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
oblong-cylindrical +  and obovoid +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
in A. Cronquist et al., Intermount. Fl. +
asymmetrical +  and symmetrical +
0 cm0 mm <br />0 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
ovate +, obovate +, round +  and flattened +
W1 +  and Endemic +
exserted +  and included +
150 cm1,500 mm <br />1.5 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
aboveground +  and subterranean +
1 +  and 7 +
100 cm1,000 mm <br />1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
white;pale green +
1 +  and 3 +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
pale green +  and white +
exserted +  and included +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Clistoyucca +  and Samuela +
Yucca elata var. verdiensis +
Yucca elata +
variety +
pink;tinged green;creamy white +
distinct +
3.2cm +  and 4.5cm +
ovate +  and elliptic +
1.3cm;2cm +
acaulescent +  and caulescent +
forming small colonies +  and solitary +
aboveground +  and subterranean +
polygamodioecious +, dioecious +, monoecious +, polycarpic +  and monocarpic +
small;gigantic +
petal-like +