familyHydrangeaceae
genusPhiladelphus
speciesPhiladelphus texensis
varietyPhiladelphus texensis var. texensis

Philadelphus texensis var. texensis

Alan S. Weakley, James Henrickson
Common names: Texas mock orange
Conservation concern
Synonyms: Philadelphus texensis var. coryanus S. Y. Hu
Treatment appears in FNA Volume 12. Treatment on page 477. Mentioned on page 474, 476.

Leaf-blades (1–) 1.6–3.3 (–4.7) × (0.5–) 0.6–1 (–2.3) cm, abaxial surface loosely strigose, hairs 0.4–0.8 mm, with understory of white, more slender, tightly coiled-crisped hairs.


Phenology: Flowering Apr–May; fruiting Jun–Oct.
Habitat: Limestone slopes and ravines, slopes in oak-juniper woodlands.
Elevation: 200–400 m.

Distribution

V12 1083-distribution-map.jpg

Tex., Mexico (Coahuila)

Discussion

Variety texensis has a more westward range than var. ernestii; it is known from Bandera, Bexar, Edwards, Kendall, Medina, Real, and Uvalde counties in central Texas and is rare in the mountains of central Coahuila, Mexico. The two varieties are identical in all important characteristics, differing primarily in the presence or absence of the highly coiled-crisped of understory hairs on the abaxial leaf surfaces. There are several collections of var. texansis in which most leaves lack understory vestiture, as in var. ernestii, but the understory vestiture occurs on some leaves or branches indicating the expression or non-expression of a simple genetic trait. In both varieties, sepals can be glabrous or sparsely sericeous, even within a population.

Selected References

None.

Lower Taxa

None.

"connate" is not a number. "distinct" is not a number.

... more about "Philadelphus texensis var. texensis"
RDF feed
Abaxial surface pubescence
strigose +
Adaxial surface pubescence
villous;glabrous;strigose +
All fusion
distinct +
All some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
Androecium position
perigynous +  and epigynous +
Anther dehiscence
dehiscing +
Anther shape
oblong;depressed-ovate +
Apex shape
obtuse +  and notched +
Appendage derivation
funicular +
Appendage presence
absent +
Author
Alan S. Weakley +  and James Henrickson +
Authority
S. Y. Hu +
Axillary bud prominence
exposed +
Bark arrangement or density
tight +
Bark relief
exfoliating +
Base architecture
sessile +
Base shape
clawed +  and tapered +
Between vein hair architecture
arched-twisted +
Between vein hair some measurement
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Blade atypical length
3.3 cm33 mm <br />0.033 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
Blade atypical width
1.1 cm11 mm <br />0.011 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
Blade coloration
green +, whitish +  and grayish +
Blade growth form or texture
herbaceous +
Blade length
1.6 cm16 mm <br />0.016 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
Blade shape
ovate +, usually narrowly lanceolate +  and lanceovate +
Blade texture
coriaceous;subcoriaceous;coriaceous;subcoriaceous;herbaceous +
Blade width
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Branch orientation
arching;spreading;ascending;spreading;ascending;erect +
Capsule character
dehiscence +
Capsule dehiscence
loculicidal +
Capsule duration
persistent +
Capsule length
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
Capsule shape
turbinate-spheroid +
Capsule texture
coriaceous +
Capsule width
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Common name
Texas mock orange +
Cyme architecture
1-flowered +
Cyme position
axillary +
Distal surface architecture or pubescence or relief
smooth +
Distal surface prominence
impressed +
Distribution
Tex. +  and Mexico (Coahuila) +
Elevation
200–400 m. +
Flower architecture
1-49-flowered +
Flower architecture or arrangement or growth form
solitary +
Flower architecture or shape
symmetric +
Flower position
marginal +
Flower reproduction
bisexual +
Fruits capsule dehiscence
loculicidal +  and septicidal +
Fruits capsule position
intercostal +  and interstylar +
Habitat
Limestone slopes and ravines, slopes in oak-juniper woodlands. +
Hair coloration
white +
Hair fixation or orientation
appressed +
Hair quantity
1 +  and 3 +
Hair shape
coiled-crisped +
Hair size
slender +
Hair some measurement
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Hypanthium architecture or shape
8-ribbed +  and 4-ribbed +
Hypanthium fusion
adnate +
Hypanthium pubescence
glabrous +  and strigose +
Hypanthium shape
hemispheric +, obconic +  and turbinate +
Illustration copyright
Flora of North America Association +
Illustrator
John Myers +
Inflorescence position
axillary +  and terminal +
Inflorescence position or structure subtype
terminal +
Internode some measurement
0.2 cm2 mm <br />0.002 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
Leaf-blade atypical length
3.3 cm33 mm <br />0.033 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
Leaf-blade atypical width
1 cm10 mm <br />0.01 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
Leaf-blade length
1.6 cm16 mm <br />0.016 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
Leaf-blade width
0.6cm;1cm +
Leaf architecture
simple +
Leaf arrangement
opposite +
Leaf duration
drought-deciduous +
Leaf season
winter +
Line orientation
vertical +
Line quantity
4 +
Margin architecture
acrodromous +
Margin architecture or shape
serrulate +  and entire +
Margin condition
drying +
Margin shape
entire +  and undulate +
Margin shape or vernation
revolute +
Nectary presence
absent +
Number of lower taxa
0 +
Ovary architecture or structure in adjective form
4-locular +
Ovary arrangement
parietal +
Ovary fusion
adnate +
Ovary placentation
axile +
Ovary position
inferior +
Ovary quantity
0 +  and 1/2 +
Ovule orientation
anatropous +
Ovule quantity
1;50 +
Pedicel atypical some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Pedicel presence
absent +
Pedicel pubescence
glabrous +  and strigose +
Pedicel some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Peduncle presence
absent +
Perianth position
perigynous +  and epigynous +
Petal arrangement
imbricate +
Petal atypical length
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Petal atypical width
0.5 cm5 mm <br />0.005 m <br /> (1.05 cm10.5 mm <br />0.0105 m <br />) +
Petal coloration
white +
Petal condition
drying +
Petal fusion
connate +
Petal length
8mm;10mm +
Petal orientation
spreading +  and ascending +
Petal quantity
4 +
Petal shape
oblong-ovate +  and ovate +
Petal width
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Petiole atypical some measurement
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Petiole presence
absent +
Petiole some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Phenology
Flowering Apr–May +  and fruiting Jun–Oct. +
Pistil architecture
4-carpellate +
Pistil quantity
1 +
Publication title
J. Arnold Arbor. +
Publication year
1956 +
Raceme architecture
cymose +
Reference
None +
Seed coloration
rusty brown +
Seed quantity
1 +  and 50 +
Seed shape
short-caudate +
Seed some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Sepal architecture
petaloid +
Sepal duration
persistent +
Sepal fusion
connate +  and distinct +
Sepal length
? (?) +
Sepal life cycle
falling +
Sepal orientation
reflexed +  and spreading +
Sepal pubescence
glabrous +, strigose +  and villous +
Sepal quantity
4 +
Sepal shape
ovate +  and ovatelanceolate +
Sepal size
enlarged +
Sepal width
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Sheet coloration
reddish-brown +, brown +  and grayish +
Slender base some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Slender hair shape
coiled-crisped +
Slit dehiscence or orientation
longitudinal +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V12/V12 1083.xml +
Special status
Conservation concern +
Stamen atypical quantity
16 (24) +
Stamen fusion
free +, connate +  and distinct +
Stamen quantity
14;16 +
Stem architecture
branched +
Stem coloration
grayish and striate +, green +  and yellowish +
Stem condition
weathering +
Stem orientation
spreading +
Stem pubescence
strigose-sericeous +
Stigma atypical quantity
1 (2) +
Stigma quantity
4 +
Stigmatic portion length
0.12 cm1.2 mm <br />0.0012 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
Stigmatic portion shape
obovoid +
Stigmatic portion width
1.1 +
Stipule presence
absent +
Style atypical some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Style duration
persistent +
Style fusion
connate +
Style quantity
1 +
Style shape
clavate +
Style some measurement
0.19 cm1.9 mm <br />0.0019 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Surface pubescence
glabrous +
Synonyms
Philadelphus texensis var. coryanus +
Taxon family
Hydrangeaceae +
Taxon name
Philadelphus texensis var. texensis +
Taxon parent
Philadelphus texensis +
Taxon rank
variety +
Trichome architecture
simple +
Twig pubescence
with simple trichomes +  and glabrous +
Vein prominence
raised +
Volume
Volume 12 +
Whole organism duration
deciduous +  and evergreen +
Whole organism growth form
shrub +
Whole organism some measurement
6dm (15dm) +
X chromosome quantity
13 +