familyAgavaceae
genusYucca
speciesYucca angustissima
varietyYucca angustissima var. avia

Yucca angustissima var. avia

Reveal in A. Cronquist et al.

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

William J. Hess, R. Laurie Robbins
Endemic
Treatment appears in FNA Volume 26. Treatment on page 434. Mentioned on page 435.

Plants acaulescent to short-caulescent. Stems erect, to 2 m. Leaf-blade lanceolate, 40–60 cm, apex long-tapering. Inflorescenses racemose, 8–18 dm; peduncle 0.3–0.5 m. Flowers 3.5–4.5 (–5.2) cm; style 7–10 mm. Capsules deeply constricted, 3.5–5.5 cm.


Phenology: Flowering late spring–early summer.
Habitat: Loamy, rocky soils
Elevation: 2500 m

Distribution

V26 896-distribution-map.jpg

Utah.

Discussion

J. L. Reveal (1977c) separated var. avia from var. kanabensis, and believed it to be more closely related to var. angustissima. S. L. Welsh et al. (1993) considered var. avia to be a northern, high elevation variant at the end of a cline within the species. It occurs in loamy, rocky soils instead of the sandy soils that the other varieties inhabit. Little is known about this variety.

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. avia"
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-tapering +
Apex texture
rigid +
Author
William J. Hess +  and R. Laurie Robbins +
Authority
Reveal in A. Cronquist et al. +
Blade-leaf distance
40 cm400 mm <br />0.4 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Blade-leaf shape
lanceolate +
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
3.5 cm35 mm <br />0.035 m <br /> (5.5 cm55 mm <br />0.055 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
2500 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 /> (2.8 cm28 mm <br />0.028 m <br />) +
Filament texture
fleshy +
Filament width
broadened +
Flower architecture
6-merous +
Flower atypical some measurement
4.5 cm45 mm <br />0.045 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
Flower orientation
pendent +
Flower reproduction
bisexual +
Flower some measurement
3.5 cm35 mm <br />0.035 m <br /> (4.5 cm45 mm <br />0.045 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
Loamy, rocky soils +
Illustration copyright
Flora of North America Association +
Illustrator
Bee F. Gunn +
Inflorescence architecture
bracteate +
Inflorescence arrangement
racemose +
Inflorescence orientation
arising +
Inflorescence pubescence
pubescent +  and glabrous +
Inflorescence size
huge +
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 /> (80 cm800 mm <br />0.8 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
widest +
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
30 cm300 mm <br />0.3 m <br /> (50 cm500 mm <br />0.5 m <br />) +
Perianth shape
campanulate +  and globose +
Perianth texture
semisucculent +
Phenology
Flowering late spring–early summer. +
Pistil shape
oblong-cylindrical +  and obovoid +
Pistil some measurement
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 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 896.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
0 cm0 mm <br />0 m <br /> (200 cm2,000 mm <br />2 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
0.7 cm7 mm <br />0.007 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. avia +
Taxon parent
Yucca angustissima +
Taxon rank
variety +
Tepal arrangement or shape
elliptic +
Tepal coloration
brown;tinged pink;white;cream or greenish white +
Tepal fusion
distinct +
Tepal length
3cm +  and 6.5cm +
Tepal pubescence
pubescent +
Tepal quantity
6 +
Tepal shape
orbiculate +  and lanceolate-elliptic +
Tepal texture
fleshy +
Tepal width
1.3cm;2.5cm +
Volume
Volume 26 +
Whole organism architecture
acaulescent +  and short-caulescent +
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 +