familyAgavaceae
genusYucca
speciesYucca angustissima
varietyYucca angustissima var. toftiae

Yucca angustissima var. toftiae

(S. L. Welsh) Reveal in A. Cronquist et al.

in A. Cronquist et al., Intermount. Fl. 6: 534. 1977.

William J. Hess, R. Laurie Robbins
Endemic
Basionym: Yucca toftiae S. L. Welsh Great Basin Naturalist 34: 308, fig. 3. 1975
Treatment appears in FNA Volume 26. Treatment on page 435. Mentioned on page 434.

Plants acaulescent or short-caulescent. Stems erect, to 1 m, 2.3–4.5 m with peduncle and inflorescence. Leaf-blade linear, 20–75 × 0.4–1.7 cm, rigid. Inflorescences mostly racemose, sometimes paniculate proximally, 4–20 dm; peduncle 1.2–2.5 m. Flowers 3–5.2 cm; tepals creamy white, elliptic to lanceolate-ovate; filaments 0.7–2.4 cm; pistil 1.5–3.2 cm; style 3–10 mm. Capsules moderately constricted, 4.5–6 cm.


Phenology: Flowering spring–early summer.
Habitat: Sandy hillsides of desert mesas
Elevation: 2000 m

Distribution

V26 897-distribution-map.jpg

Utah.

Discussion

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.

... more about "Yucca angustissima var. toftiae"
RDF feed
Anther dehiscence
longitudinal +
Anther fixation
versatile +
Anther some measurement
0.32 cm3.2 mm <br />0.0032 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Apex architecture or shape
spinose +
Apex fragility
pliable +
Apex odor or shape
pungent +
Apex pubescence
glandular-pubescent +  and glandular +
Apex shape
long-acuminate +
Apex texture
rigid +
Author
William J. Hess +  and R. Laurie Robbins +
Authority
(S. L. Welsh) Reveal in A. Cronquist et al. +
Basionyms
Yucca toftiae +
Blade fragility
pliable +
Blade pubescence
glaucous +
Blade shape
elliptic +, ovate +, oblanceolate +, lanceolate +  and linear +
Blade size
expanded +
Blade texture
fleshy +  and rigid +
Bract architecture or shape
leaflike +
Bract arrangement or course or shape
linear +
Bract orientation
erect +
Bract shape
scale-like +
Capsule size
constricted +
Capsule some measurement
4.5 cm45 mm <br />0.045 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Distal bract length
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Distal bract width
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Distribution
Utah. +
Elevation
2000 m +
Fiber length
elongated +
Filament architecture or pubescence or relief
smooth +
Filament pubescence
pubescent +  and glabrous +
Filament pubescence or relief or texture
granular +
Filament relief
papillose +
Filament shape
flattened +
Filament some measurement
0.7 cm7 mm <br />0.007 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
Filament texture
fleshy +
Filament width
broadened +
Flower architecture
6-merous +
Flower atypical some measurement
5.5 cm55 mm <br />0.055 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
Flower orientation
pendent +
Flower reproduction
bisexual +
Flower some measurement
3 cm30 mm <br />0.03 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
Fruit architecture
capsular +
Fruit dehiscence
septicidal +, 2cm +  and 3cm +
Fruit orientation
erect +
Fruit shape
lobed +
Fruit size
constricted +
Fruit texture
fleshy +  and dry +
Habitat
Sandy hillsides of desert mesas +
Illustration copyright
Flora of North America Association +
Illustrator
Bee F. Gunn +
Inflorescence architecture
bracteate +
Inflorescence arrangement
paniculate +  and racemose +
Inflorescence orientation
arising +
Inflorescence pubescence
pubescent +  and glabrous +
Inflorescence size
huge +
Leaf-blade arrangement or course or shape
linear +
Leaf-blade atypical length
80 cm800 mm <br />0.8 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
Leaf-blade fragility
pliable +
Leaf-blade length
20 cm200 mm <br />0.2 m <br /> (75 cm750 mm <br />0.75 m <br />) +
Leaf-blade orientation
spreading +
Leaf-blade pubescence
not glaucous +
Leaf-blade shape
plano-keeled +, concavo-convex +, lanceolate +  and linear +
Leaf-blade texture
rigid +
Leaf-blade width
0.4cm;1.7cm +
Leaf architecture
sessile +
Leaf duration
long-lived +  and annual +
Leaf position
cauline +
Margin architecture
filiferous +
Margin architecture or shape
entire +
Margin arrangement
separating +
Margin coloration
green +, gray +, brownish +  and white +
Margin shape
denticulate +  and entire +
Margin texture
corneous +
Middle leaf width
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Number of lower taxa
0 +
Ovary architecture or structure in adjective form
6-locular +  and 3-locular +
Ovary coloration
green +
Ovary placentation
parietal +
Ovary position
superior +
Ovary shape
6-lobed +
Pedicel architecture
not +  and articulate +
Pedicel fusion
distinct +
Pedicel presence
absent +
Peduncle architecture or shape
scapelike +
Peduncle diameter
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Peduncle pubescence
pubescent +
Peduncle some measurement
120 cm1,200 mm <br />1.2 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
Perianth shape
campanulate +  and globose +
Perianth texture
semisucculent +
Phenology
Flowering spring–early summer. +
Pistil shape
oblong-cylindrical +  and obovoid +
Pistil some measurement
1.5 cm15 mm <br />0.015 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
Proximal bract length
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Proximal bract width
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Publication title
in A. Cronquist et al., Intermount. Fl. +
Publication year
1977 +
Reference
None +
Rosette size
small +
Scape diameter
0 cm0 mm <br />0 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Seed coloration
black +
Seed length
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Seed quantity
many +
Seed reflectance
dull +
Seed shape
ovate +, obovate +, round +  and flattened +
Seed width
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V26/V26 897.xml +
Special status
Endemic +
Spine height or length or size
short +
Spine length or size
long +
Spine shape
acicular +
Spine some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Stamen position
exserted +  and included +
Stamen quantity
6 +
Stem architecture
branched +
Stem growth form
procumbent +
Stem location
aboveground +  and subterranean +
Stem orientation
erect +
Stem quantity
single +
Stem some measurement
230 cm2,300 mm <br />2.3 m <br /> (450 cm4,500 mm <br />4.5 m <br />) +
Stigma architecture or shape
subcapitate +
Stigma coloration
white;pale green +
Stigma quantity
1 +  and 3 +
Stigma shape
lobed +
Stigma some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Style atypical some measurement
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Style coloration
white +  and pale green +
Style position
exserted +  and included +
Style some measurement
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Style width
thick +
Synonyms
Clistoyucca +  and Samuela +
Taxon family
Agavaceae +
Taxon name
Yucca angustissima var. toftiae +
Taxon parent
Yucca angustissima +
Taxon rank
variety +
Tepal arrangement or shape
elliptic +
Tepal coloration
creamy white +
Tepal fusion
distinct +
Tepal length
3cm +  and 6.5cm +
Tepal pubescence
pubescent +
Tepal quantity
6 +
Tepal shape
elliptic +  and lanceolate-ovate +
Tepal texture
fleshy +
Tepal width
1.3cm;2.5cm +
Volume
Volume 26 +
Whole organism architecture
short-caulescent +  and acaulescent +
Whole organism architecture or arrangement or growth form
forming small to large colonies +  and solitary +
Whole organism diameter
0 cm0 mm <br />0 m <br /> (300 cm3,000 mm <br />3 m <br />) +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism habitat
epiphytic +
Whole organism location
aboveground +  and subterranean +
Whole organism reproduction
polygamodioecious +, dioecious +, monoecious +, polycarpic +  and monocarpic +
Whole organism size
small;gigantic +
Whorl quantity
2 +
Whorl shape
petal-like +
X chromosome quantity
30 +  and 25 +