Difference between revisions of "Chelone obliqua var. erwiniae"
Bartonia 10: 19. 1929.
FNA>Volume Importer |
(modify caly× to calyx) |
||
| (7 intermediate revisions by 2 users not shown) | |||
| Line 16: | Line 16: | ||
|name=Chelone obliqua subsp. erwiniae | |name=Chelone obliqua subsp. erwiniae | ||
|authority=(Pennell & Wherry) Pennell | |authority=(Pennell & Wherry) Pennell | ||
| + | |rank=subspecies | ||
}} | }} | ||
|hierarchy=Plantaginaceae;Chelone;Chelone obliqua;Chelone obliqua var. erwiniae | |hierarchy=Plantaginaceae;Chelone;Chelone obliqua;Chelone obliqua var. erwiniae | ||
| Line 24: | Line 25: | ||
}}<!-- | }}<!-- | ||
| − | --><span class="statement" id="st-undefined" data-properties=""><b>Leaves:</b> mid-cauline blade (60–)80–197 mm. <b>Flowers</b>: | + | --><span class="statement" id="st-undefined" data-properties=""><b>Leaves:</b> mid-cauline blade (60–)80–197 mm. <b>Flowers</b>: calyx lobe margins not or sparsely ciliate; corolla: abaxial lobes 12–15(–16) mm; staminode (6–)8–12(–14) mm. <b>2n</b> = 56.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| Line 31: | Line 32: | ||
|elevation=1000–1700 m. | |elevation=1000–1700 m. | ||
|distribution=N.C.;S.C. | |distribution=N.C.;S.C. | ||
| − | |discussion=<p>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).</p> | + | |discussion=<p>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 <i>Chelone obliqua </i>var.<i> erwiniae</i> and <i>C. glabra</i> (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 <i></i>var.<i> erwiniae</i>, it may reproduce via seed infrequently, relying on clonal reproduction by rhizomes (Stamp 1987).</p> |
|tables= | |tables= | ||
|references= | |references= | ||
| Line 40: | Line 41: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Chelone obliqua var. erwiniae | name=Chelone obliqua var. erwiniae | ||
| − | |||
|authority=Pennell & Wherry | |authority=Pennell & Wherry | ||
|rank=variety | |rank=variety | ||
| Line 55: | Line 55: | ||
|publication year=1929 | |publication year=1929 | ||
|special status=Endemic | |special status=Endemic | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V17/V17_177.xml |
|genus=Chelone | |genus=Chelone | ||
|species=Chelone obliqua | |species=Chelone obliqua | ||
Latest revision as of 22:18, 14 January 2021
Leaves: mid-cauline blade (60–)80–197 mm. Flowers: calyx 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.
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.