familyRosaceae
subfamilyRosaceae subfam. Amygdaloideae
tribeRosaceae tribe Spiraeeae
genusHolodiscus
speciesHolodiscus microphyllus
varietyHolodiscus microphyllus var. microphyllus

Holodiscus microphyllus var. microphyllus

Richard Lis
Treatment appears in FNA Volume 9. Treatment on page 420. Mentioned on page 421.

Short-shoot leaf surfaces sessile and/or stipitate-glandular, abaxial gray to off-white, veins, intercostal regions, and margins frequently obscured by hairs, tomentose to villous, often with white to gray granular deposits, adaxial puberulent, short-hirsute, velutinous to villous, sometimes hairs very short and surface appearing green to gray-green. Inflorescences 2–9 × 1–7 cm. Pedicels 2–3 mm. Flowers: nectar disc slightly pilose to puberulent, sometimes glabrous; sepals densely pilose to tomentose, usually eglandular; petal base abaxially with few, scattered long hairs.


Phenology: Flowering Apr-–Aug.
Habitat: Rock outcrops, rocky sites in sagebrush and bitterbrush shrublands, edges of talus slopes
Elevation: 500-–3100 m

Distribution

V9 707-distribution-map.jpg

Ariz., Calif., Colo., Idaho, Nev., Oreg., Utah, Wyo., Mexico (Baja California)

Discussion

Variety microphyllus has the widest range of the varieties. Individual populations are generally small and isolated.

Selected References

None.

Lower Taxa

None.

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

... more about "Holodiscus microphyllus var. microphyllus"
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Abaxial edge shape
convex +
Abaxial surface architecture
sessile +
Abaxial surface coloration
white +  and whitish +
Abaxial surface length or size
long +
Abaxial surface pubescence
stipitate-glandular +, sericeous +, tomentose +  and villous or sericeous +
Achene arrangement
aggregated +
Achene coloration
beige +  and gray +
Achene pubescence
hirsute +
Achene quantity
5 (?) +
Adaxial edge architecture
sessile +
Adaxial edge course
straight +
Adaxial edge pubescence
stipitate-glandular +, hirsute +  and hispid +
Adaxial edge some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Adaxial surface architecture
sessile-glandular +  and stipitate +
Adaxial surface architecture or function or pubescence
sessile-glandular +
Adaxial surface pubescence
villous +, velutinous +, puberulent +, glabrate +, glabrous +  and short-hirsute +
Adaxial vein pubescence
velutinous +  and villous +
Androecium position
perigynous +
Anther dehiscence
dehiscent +
Apex architecture or function or pubescence
glandular +
Apex pubescence
villous +, sessile-glandular +  and glabrate +
Apex shape
acute;acuminate +
Author
Richard Lis +
Authority
Rydberg +
Bark coloration
light +  and dark gray or nearly black +
Bark relief
exfoliating +
Basal branch position
subtending +
Basal branch presence
absent +
Basal leaf architecture
compound +  and simple +
Basal leaf arrangement
opposite +  and alternate +
Base shape
cuneate +, decurrent +  and acute +
Basionyms
Holodiscus +
Blade atypical length
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Blade length
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Blade shape
obtrullate +, broadly obovate +  and more or less ovate +
Blade some measurement
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Blade texture
coriaceous +
Blade width
1 cm10 mm <br />0.01 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
Bract presence
absent +
Bracteole atypical some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Bracteole presence
absent +
Bracteole some measurement
0.5mm;2mm +
Branch architecture
sessile-glandular +  and stipitate +
Branch pubescence
puberulent +  and tomentose +
Carpel atypical quantity
5 (8) +
Carpel fusion
adnate +
Carpel pubescence
hispid +  and hirsute +
Carpel quantity
5 (?) +
Carpel some measurement
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Cauline leaf architecture
simple +
Cauline leaf arrangement
alternate +
Cauline leaf growth form
dimorphic +
Deposit coloration
White (Gray) +
Deposit presence
absent +
Deposit pubescence or relief or texture
granular +
Distribution
Ariz. +, Calif. +, Colo. +, Idaho +, Nev. +, Oreg. +, Utah +, Wyo. +  and Mexico (Baja California) +
Drupe arrangement
not +  and aggregated +
Drupelet arrangement
aggregated +
Elevation
500-–3100 m +
Epicalyx bractlet presence
absent +
Epidermis relief
exfoliating +
Exterior architecture or function or pubescence
sessile-glandular +
Exterior pubescence
puberulent +  and tomentose +
Flower diameter
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flower reproduction
unisexual +  and bisexual +
Follicle arrangement
aggregated +
Fruit orientation
inverted +
Fruit shape
dolabriform +  and flattened +
Fruits achene arrangement
not +  and aggregated +
Fruits follicle arrangement
not +  and aggregated +
Gland architecture
sessile +
Gland quantity
20;40 +
Glomerule arrangement
fascicles +
Habitat
Rock outcrops, rocky sites in sagebrush and bitterbrush shrublands, edges of talus slopes +
Hair architecture
sessile-glandular +  and stipitate +
Hair arrangement
scattered +
Hair coloration
white +
Hair height or length or size
short +
Hair length or size
long +
Hair presence
absent +
Hair quantity
few +
Hypanthium diameter
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Hypanthium duration
persistent +
Hypanthium shape
patelliform +  and shallowly crateriform +
Illustration copyright
Flora of North America Association +
Illustrator
Marjorie C. Leggitt +
Inflorescence architecture
10-50-flowered +
Inflorescence length
2 cm20 mm <br />0.02 m <br /> (?) +  and 9 cm90 mm <br />0.09 m <br /> (?) +
Inflorescence orientation
pendulous +  and erect +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Inflorescence width
1 cm10 mm <br />0.01 m <br /> (?) +  and 7 cm70 mm <br />0.07 m <br /> (?) +
Integument architecture
crassinucellate +
Integument quantity
2 +
Leaf architecture
compound +  and simple +
Leaf arrangement
alternate +
Leaf base shape
decurrent +
Leaf duration
deciduous +
Leaf surface architecture
sessile +
Leaf surface coloration
Gray (Off-white) +
Leaf surface position
abaxial +
Leaf surface pubescence
stipitate-glandular +
Long-shoot architecture
sessile +
Long-shoot atypical some measurement
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Long-shoot coloration
Green (Straw yellow) +
Long-shoot pubescence
Stipitate-glandular (Tomentose) +
Long-shoot shape
round +  and angled +
Long-shoot some measurement
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Longer hair arrangement
scattered +
Margin architecture
simple-craspedodromous +
Margin architecture or shape
serrate +  and entire +
Margin prominence
obscured +
Margin prominence or shape
flat +
Margin pubescence
tomentose +  and villous +
Margin shape
toothed +, unlobed +  and lobed +
Nectar disc presence
absent +
Nectar disc pubescence
Glabrous (Slightly pilose) +
Number of lower taxa
0 +
Nutlet arrangement
aggregated +
Ovary position
inferior +  and superior +
Ovule arrangement
biseriate +  and clustered +
Ovule arrangement or growth form
clustered +
Ovule atypical quantity
2 (5) +
Ovule position
collateral +  and apical +
Ovule quantity
2 +
Panicle pubescence
tomentose +, villous +, puberulent +  and glabrate +
Pedicel presence
absent +
Pedicel some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Perianth position
perigynous +
Periderm coloration
dark red +, maroon +  and shiny +
Periderm life cycle
aging +
Petal atypical quantity
0 (?) +  and 4 (?) +
Petal coloration
white +
Petal fusion
free +  and distinct +
Petal quantity
5 +
Petal shape
ovate;elliptic +
Petal some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Petiole fusion
distinct +
Petiole presence
absent +
Petiole prominence
obscured +
Phenology
Flowering Apr-–Aug. +
Pistil atypical quantity
250 (450) +
Pistil fusion
adnate +, free +, connate +  and distinct +
Pistil quantity
1;250 +
Primary secondary-vein architecture
percurrent +
Primary secondary-vein prominence
protruding +
Publication title
Bull. Torrey Bot. Club +
Publication year
1904 +
Reference
None +
Secondary tooth presence
absent +
Secondary tooth quantity
infrequent +
Seed architecture
not arillate +
Seed atypical quantity
2 (12) +
Seed quantity
2;1 +
Sepal architecture
eglandular +
Sepal atypical quantity
5 (10) +
Sepal duration
persistent +
Sepal fusion
free +  and distinct +
Sepal orientation
erect +  and spreading or slightly reflexed +
Sepal pubescence
densely pilose +  and tomentose +
Sepal quantity
5 +
Sepal shape
triangular +  and deltate +
Sepal some measurement
0.13 cm1.3 mm <br />0.0013 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Shoot height or length or size
short +
Shoot pubescence
pilose-tomentose +, canescent +, downy +, glabrate +  and glabrous +
Shoot quantity
3 +
Shoot shape
pleated +, angled +  and long +
Short-shoot some measurement
0.2 cm2 mm <br />0.002 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V9/V9 707.xml +
Stamen atypical quantity
130 (220) +
Stamen fusion
free +  and distinct +
Stamen length or size
longer +
Stamen quantity
15;20 +
Stamen some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
Stamen variability
equal +
Stem architecture
branched +  and simple +
Stem orientation
erect +  and arching +
Stem quantity
1 +  and 10 +
Stigma architecture or shape
capitate +
Stigma shape
2-lobed +
Stipule architecture
palmate +
Stipule architecture or shape
pinnate +
Stipule presence
absent +
Style duration
persistent +  and deciduous +
Style fusion
distinct +
Style position
basal +, lateral +, subterminal +  and terminal +
Style position or structure subtype
terminal +
Style shape
not elongate +
Surface coloration
green +  and gray-green +
Synonyms
Holodiscus discolor subsp. microphyllus +  and H. discolor var. microphyllus +
Taxon family
Rosaceae +
Taxon name
Holodiscus microphyllus var. microphyllus +
Taxon parent
Holodiscus microphyllus +
Taxon rank
variety +
Torus development
developed +
Torus presence
absent +
Torus prominence
inconspicuous +
Torus size
thickened +  and minute +
Volume
Volume 9 +
Water-sprout shoot quantity
rare +
Water-sprout shoot some measurement
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Whole organism architecture
condensed +
Whole organism architecture or arrangement
compact +
Whole organism arrangement
tangled +
Whole organism duration
perennial +
Whole organism growth form
shrub +
Whole organism orientation
erect +  and spreading +
Whole organism some measurement
3dm (10dm) +
X chromosome quantity
9 +