Difference between revisions of "Epilobium sect. Epilobiopsis"
Syst. Bot. Monogr. 83: 89. 2007.
imported>Volume Importer |
imported>Volume Importer |
||
| Line 23: | Line 23: | ||
|rank=section | |rank=section | ||
}} | }} | ||
| − | |hierarchy=Onagraceae;Onagraceae subfam. Onagroideae;Epilobium;Epilobium sect. Epilobiopsis | + | |hierarchy=Onagraceae;Onagraceae subfam. Onagroideae;Onagraceae tribe Epilobieae;Epilobium;Epilobium sect. Epilobiopsis |
| − | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Onagraceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Onagraceae subfam. Onagroideae]]</div><div class="higher-taxon"><small>genus</small>[[Epilobium]]</div><div class="higher-taxon"><small>section</small>[[Epilobium sect. Epilobiopsis]]</div></div> | + | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Onagraceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Onagraceae subfam. Onagroideae]]</div><div class="higher-taxon"><small>tribe</small>[[Onagraceae tribe Epilobieae]]</div><div class="higher-taxon"><small>genus</small>[[Epilobium]]</div><div class="higher-taxon"><small>section</small>[[Epilobium sect. Epilobiopsis]]</div></div> |
|volume=Volume 10 | |volume=Volume 10 | ||
|mention_page= | |mention_page= | ||
| Line 55: | Line 55: | ||
|publication year=2007 | |publication year=2007 | ||
|special status= | |special status= | ||
| − | |source xml=https://xjsachs2@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://xjsachs2@bitbucket.org/aafc-mbb/fna-data-curation.git/src/e39f0e846f172941159b2045254d62d10d9823f6/coarse_grained_fna_xml/V10/V10_293.xml |
|subfamily=Onagraceae subfam. Onagroideae | |subfamily=Onagraceae subfam. Onagroideae | ||
| + | |tribe=Onagraceae tribe Epilobieae | ||
|genus=Epilobium | |genus=Epilobium | ||
|section=Epilobium sect. Epilobiopsis | |section=Epilobium sect. Epilobiopsis | ||
Latest revision as of 11:31, 9 May 2022
Herbs annual, with taproot. Stems often with decumbent proximal branches, rarely simple, epidermis peeling proximally. Leaves opposite and early deciduous in proximal pairs, alternate distally, often crowded and exceeding internodes, caducous apical mucro often prominent. Flowers actinomorphic, usually cleistogamous; floral tube not bulbous, without scales inside; petals pink or white; pollen in tetrads; stigma clavate, subentire to ± shallowly 4-lobed. Capsules fusiform to subclavate, sharply 4-angled or terete, walls tough, usually splitting only in distal 1/3, central column disintegrating, sessile. Seeds 7–14 per locule in 2 rows, irregularly angular-fusiform; coma absent.
Distribution
w North America, nw Mexico, s South America.
Discussion
Species 2 (2 in the flora).
Section Epilobiopsis, treated formerly as Boisduvalia sect. Currania (P. A. Munz 1941, 1965; P. H. Raven 1976), consists of two self-compatible, sometimes cleistogamous, annual species with n = 15 that occur primarily in western North America; Epilobium campestre also occurs disjunctly in southern Argentina. The species in this section are distinctive by lacking a seed coma and by being spring-blooming annuals (both features shared with sect. Pachydium), and uniquely by having tough, only partially dehiscent, capsules with seeds in two rows per locule (Raven and D. M. Moore 1965). Although the species of sect. Epilobiopsis share the gametic chromosome number n = 15 with those of sects. Cordylophorum and Zauschneria, all attempts have failed to form inter-sectional hybrids with those groups, as well as with species of sect. Pachydium (n = 9, 10, 19) with which they were formerly grouped (Munz 1965; S. R. Seavey 1992). Unexpectedly, molecular analyses (D. A. Baum et al. 1994; R. A. Levin et al. 2004) placed sect. Epilobiopsis as sister to a clade of sects. Pachydium and Zauschneria with strong support. Baum et al. also found weak support (81%) for the monophyly of sect. Epilobiopsis.
Selected References
None.