familyPlantaginaceae
genusChelone
speciesChelone obliqua
varietyChelone obliqua var. erwiniae

Chelone obliqua var. erwiniae

Pennell & Wherry

Bartonia 10: 19. 1929.

Allan D. Nelson
Common names: Erwin’s or red turtlehead
Endemic
Synonyms: Chelone obliqua subsp. erwiniae (Pennell & Wherry) Pennell
Treatment appears in FNA Volume 17. Treatment on page 60. Mentioned on page 59.

Leaves: midcauline blade (60–) 80–197 mm. Flowers: caly× lobe margins not or sparsely ciliate; corolla: abaxial lobes 12–15 (–16) mm; staminode (6–) 8–12 (–14) mm. 2n = 56.


Phenology: Flowering Jul–Oct.
Habitat: Along streams, marshes, swamps, seeps, springs, wet meadows and woods, pond and lake margins.
Elevation: 1000–1700 m.

Distribution

N.C., S.C.

Discussion

Variety erwiniae is considered vulnerable to extinction in the Blue Ridge Province; threats to populations have not been assessed (NatureServe, www.natureserve.org/explorer). N. E. Stamp (1987) identified two common larval seed predators, Endothenia herbesana and Phytomyza cheloniae, which were observed to attack 25% of the capsules from a population and destroy 21% of its seeds. Insect defoliation prior to development of inflorescences reduces floral and seed output significantly in Chelone obliqua var. erwiniae and C. glabra (Stamp 1984). Severe herbivory after flower buds appeared caused decreased seed output, and plants that were defoliated twice in one year often produced no flowers (Stamp 1984). Because of severe levels of herbivory and seed predation observed in var. erwiniae, it may reproduce via seed infrequently, relying on clonal reproduction by rhizomes (Stamp 1987).

Selected References

None.

Lower Taxa

None.
... more about "Chelone obliqua var. erwiniae"
RDF feed
2n chromosome quantity
56 +
Abaxial lobe atypical length
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Abaxial lobe atypical some measurement
1.5 cm15 mm <br />0.015 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Abaxial lobe length
1.2 cm12 mm <br />0.012 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
Abaxial lobe quantity
3 +
Abaxial lobe shape
ovate;rounded +
Abaxial lobe some measurement
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Abaxial lobe width
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Abaxial surface pubescence
villous +, pilose +  and glabrous +
Adaxial filament atypical some measurement
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Adaxial filament some measurement
1.6 cm16 mm <br />0.016 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
Adaxial lobe quantity
2 +
Adaxial lobe shape
keeled +
Adaxial surface pubescence
glabrous +
Androecium position
hypogynous +
Author
Allan D. Nelson +
Authority
Pennell & Wherry +
Basal leaf architecture
simple +
Basal leaf arrangement
alternate +, opposite +, whorled +, helical +  and subopposite +
Base shape
cuneate +
Blade arrangement or shape
elliptic +  and elliptic to narrowly +
Blade atypical width
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Blade length
4.5 cm45 mm <br />0.045 m <br /> (19.7 cm197 mm <br />0.197 m <br />) +
Blade texture
not leathery +  and not fleshy +
Blade width
0.8 cm8 mm <br />0.008 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Bract atypical length
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
Bract length
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Bract shape
acuminate;acute +
Bract width
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Bracteole position relational
surrounding +
Calyx architecture or shape
symmetric +
Common name
Erwin’s or red turtlehead +
Corolla architecture
bilabiate +
Corolla architecture or shape
symmetric +
Corolla coloration
paler +  and white +
Corolla shape
tubular +
Cyme shape
spikelike +
Cyme some measurement
3.8 cm38 mm <br />0.038 m <br /> (8.6 cm86 mm <br />0.086 m <br />) +
Distribution
N.C. +  and S.C. +
Drupe shape
drupe-like +
Elevation
1000–1700 m. +
Embryo course
curved +  and straight +
Endosperm presence
absent +
Filament pubescence
pubescent +  and villous +
Flower quantity
1 +  and 4 +
Flower reproduction
bisexual +
Fruits capsule dehiscence
septicidal +
Habitat
Along streams, marshes, swamps, seeps, springs, wet meadows and woods, pond and lake margins. +
Illustration copyright
Flora of North America Association +
Illustrator
Barbara Alongi +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Leaf arrangement
opposite +
Leaf duration
persistent +  and deciduous +
Leaf position
cauline +
Lobe quantity
5 (?) +
Lobe shape
ovate +
Margin architecture or pubescence or shape
ciliate +
Margin architecture or shape
serrate +  and dentate +
Margin shape
entire +  and subentire toothed or lobed +
Margin size or quantity
2 times-serrate teeth +
Midcauline blade atypical some measurement
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Midcauline blade some measurement
8 cm80 mm <br />0.08 m <br /> (19.7 cm197 mm <br />0.197 m <br />) +
Middle abaxial lobe prominence
elevated +
Number of lower taxa
0 +
Ovary architecture or structure in adjective form
2-locular +
Ovary arrangement
axile +  and parietal +
Ovary placentation
axile +
Ovary position
basal +, apical +  and superior +
Ovule architecture
tenuinucellate +, unitegmic +  and hemitropous +
Ovule orientation
campylotropous +, hemianatropous +  and anatropous +
Palate pubescence
white-bearded +  and yellow-bearded +
Panicle architecture
spiciform +
Pedicel presence
absent +
Perianth position
hypogynous +
Petal fusion
connate +
Petal presence
absent +
Petal quantity
5 +  and 4 +
Petiole presence
absent +
Petiole some measurement
0.3 cm3 mm <br />0.003 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Phenology
Flowering Jul–Oct. +
Pistil architecture
2-carpellate +
Pistil quantity
1 +
Publication title
Bartonia +
Publication year
1929 +
Reference
None +
Rim presence
absent +
Rim size
minute +
Seed coloration
darker +, tan +  and light-brown +
Seed quantity
50 +
Seed shape
globular +  and ovoid +
Sepal architecture or shape
symmetric +
Sepal atypical quantity
2 (4) +
Sepal fusion
connate +
Sepal quantity
5 +
Sepal shape
campanulate +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V17/V17 177.xml +
Special status
Endemic +
Stamen architecture
didynamous +
Stamen atypical quantity
1 (3) +
Stamen fusion
adnate +
Stamen quantity
4 +
Staminode atypical some measurement
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Staminode coloration
purple +  and green +
Staminode presence
absent +
Staminode quantity
1 +
Staminode shape
spatulate +
Staminode some measurement
0.8 cm8 mm <br />0.008 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
Staminode variability
equal +
Stem growth form
climbing +  and scrambling +
Stem growth form or orientation
sprawling +, creeping +  and prostrate +
Stem location
aerial +
Stem orientation
erect +
Stem presence
absent +
Stem pubescence
glabrate +  and glabrous +
Stem quantity
1;12 +
Stem some measurement
25 cm250 mm <br />0.25 m <br /> (180 cm1,800 mm <br />1.8 m <br />) +
Stigma architecture or shape
capitate +
Stigma quantity
1 +
Stipule presence
absent +
Style atypical quantity
0 (?) +
Style quantity
1 +
Style some measurement
1.6 cm16 mm <br />0.016 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
Synonyms
Chelone obliqua subsp. erwiniae +
Taxon family
Plantaginaceae +
Taxon name
Chelone obliqua var. erwiniae +
Taxon parent
Chelone obliqua +
Taxon rank
variety +
Throat condition
closing +
Throat pubescence
pilose +
Tube base shape
gibbous +  and not spurred +
Tube some measurement
1.4 cm14 mm <br />0.014 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
Volume
Volume 17 +
Whole organism duration
perennial +
Whole organism growth form
herb +
Whole organism nutrition
autotrophic +
Whole organism texture
fleshy +
Wing presence
absent +
X chromosome quantity
14 +