familyCommelinaceae
genusTradescantia
speciesTradescantia occidentalis
varietyTradescantia occidentalis var. scopulorum

Tradescantia occidentalis var. scopulorum

(Rose) E. S. Anderson & Woodson

Contr. Arnold Arbor. 9: 106. 1935.

Robert B. Faden
Endemic
Basionym: Tradescantia scopulorum Contr. U. S. Natl. Herb. 5: 205. 1899
Treatment appears in FNA Volume 22.
Revision as of 23:51, 29 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Stems 14–35 cm. Leaves: blade 5–45 × 0.4–0.9 cm. Flowers: pedicels 1–2 cm, glabrous; sepals 5–8 mm, glabrous; petals bright blue, 0.7–1 cm.


Phenology: Flowering spring–summer, fall (Apr–Aug, Oct).
Habitat: Moist canyons and stream banks

Distribution

V22 122-distribution-map.jpg

Ariz., N.Mex.

Discussion

The two varieties intergrade; the only absolute difference between them is sepal pubescence. Tradescantia occidentalis var. scopulorum evidently was defined more broadly by W. C. Martin and C. R. Hutchins (1980), so the distribution I have shown for New Mexico could be too wide. A broader circumscription of this variety has also been used by others (C. Sinclair 1967; M. Bolick 1986), but I have not accepted these records.

Most specimens of Tradescantia occidentalis from Arkansas and Louisiana have an apical tuft of eglandular hairs on the sepals, a character acquired through introgression with T. ohiensis (E. Anderson and R. E. Woodson Jr. 1935).

Tradescantia occidentalis var. melanthera has been described for plants from Arkansas, Louisiana, eastern Texas and eastern Oklahoma that have dark anther connectives (D. T. MacRoberts 1977). I have not been able to recognize this character in dried specimens with any consistency.

Selected References

None.

Lower Taxa

None.
... more about "Tradescantia occidentalis var. scopulorum"
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Apex pubescence
glabrous +  and glaucous +
Apex shape
acuminate +
Author
Robert B. Faden +
Authority
(Rose) E. S. Anderson & Woodson +
Basionyms
Tradescantia scopulorum +
Blade architecture
petiolate +  and sessile +
Blade length
5 cm50 mm <br />0.05 m <br /> (45 cm450 mm <br />0.45 m <br />) +
Blade shape
linear-lanceolate +
Blade texture
succulent +
Blade width
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Bract architecture
foliaceous +
Bracteole duration
persistent +
Capsule architecture
3-valved +
Capsule architecture or structure in adjective form
3-locular +
Capsule dehiscence
loculicidal +
Capsule some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Cyme architecture
sessile +
Cyme condition or size
contracted +
Cyme shape
umbel-like +
Distribution
Ariz. +  and N.Mex. +
Embryotegum position
Abaxial (Lateral) +
Embryotegum shape
lidlike +
Filament pubescence
bearded +
Flower architecture
pedicillate +
Flower architecture or shape
symmetric +
Flower reproduction
bisexual +
Habitat
Moist canyons and stream banks +
Hair architecture
eglandular +
Hair arrangement
scattered +
Hilum shape
Oblong (Linear) +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Inflorescence architecture
thyrsiform +  and cymose +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Inflorescence shape
umbel-like +
Inflorescence size
reduced +
Internode pubescence
glabrous +  and glaucous +
Leaf architecture
sessile +
Leaf arrangement
arranged +
Leaf position
cauline +  and basal +
Margin architecture or shape
entire +
Margin arrangement
parallel +
Margin fusion
distinct +
Margin variability
differentiated +
Number of lower taxa
0 +
Ovary architecture or structure in adjective form
3-locular +
Ovary position
superior +
Ovule architecture or arrangement
1-seriate +
Ovule atypical quantity
1 (2) +
Ovule quantity
2 +
Pedicel development
developed +
Pedicel height or length or size
short +
Pedicel pubescence
glabrous +
Pedicel some measurement
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Petal architecture
petaloid +
Petal architecture or texture
deliquescent +
Petal coloration
bright blue +
Petal fusion
distinct +
Petal quantity
3 +
Petal shape
not clawed +  and ovate +
Petal size
unequal +
Petal some measurement
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
Petal variability
equal +
Phenology
Flowering spring–summer, fall (Apr–Aug, Oct). +
Publication title
Contr. Arnold Arbor. +
Publication year
1935 +
Reference
None +
Root architecture
tuberous +
Root width
thin +
Seed quantity
2 +
Seed some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Sepal architecture
sepaloid +
Sepal fusion
distinct +
Sepal pubescence
glabrous +
Sepal quantity
3 +
Sepal size
subequal +
Sepal some measurement
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Sheath condition
closed +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/62857cf6bca5c4637d27b113da92d27dbf9962f4/V22/V22 122.xml +
Special status
Endemic +
Stamen fusion
free +
Stamen position
staminodial +
Stamen presence
absent +
Stamen quantity
6 +
Stamen reproduction
fertile +
Stamen variability
equal +
Stem some measurement
14 cm140 mm <br />0.14 m <br /> (35 cm350 mm <br />0.35 m <br />) +
Stigma architecture
simple +
Stigma quantity
1 +
Stigma size
not +  and enlarged +
Style architecture
simple +
Style quantity
1 +
Style size
slender +
Synonyms
Rhoeo +, Setcreasea +  and Zebrina +
Taxon family
Commelinaceae +
Taxon name
Tradescantia occidentalis var. scopulorum +
Taxon parent
Tradescantia occidentalis +
Taxon rank
variety +
Volume
Volume 22 +
Whole organism architecture
rooting +
Whole organism duration
perennial +
Whole organism growth form
herb +
Whole organism orientation
ascending +  and erect +
X chromosome quantity
6 +  and 8 +