View source for Epilobium subsect. Petrolobium

{{Treatment/ID
|accepted_name=Epilobium subsect. Petrolobium
|accepted_authority=P. H. Raven
|publications={{Treatment/Publication
|title=Ann. Missouri Bot. Gard.
|place=63: 334. 1977
|year=1977
}}
|basionyms=
|synonyms=
|hierarchy=Onagraceae;Onagraceae subfam. Onagroideae;Onagraceae tribe Epilobieae;Epilobium;Epilobium sect. Cordylophorum;Epilobium sect. Cordylophorum;Epilobium subsect. Petrolobium
|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. Cordylophorum]]</div><div class="higher-taxon"><small>section</small>[[Epilobium sect. Cordylophorum]]</div><div class="higher-taxon"><small>subsection</small>[[Epilobium subsect. Petrolobium]]</div></div>
|volume=Volume 10
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="herb growth form;herb arrangement"><b>Herbs </b>suffrutescent, clumped.</span> <span class="statement" id="st-d0_s1" data-properties="leaf arrangement;leaf arrangement;leaf arrangement;leaf size;apical mucro duration;apical mucro prominence"><b>Leaves </b>opposite only in proximal pairs, alternate or sometimes with fascicles of small leaves distally, caducous apical mucro prominent.</span> <span class="statement" id="st-d0_s2" data-properties="flower architecture"><b>Flowers </b>actinomorphic;</span> <span class="statement" id="st-d0_s3" data-properties="petal coloration">petals rose-purple.</span> <span class="statement" id="st-d0_s4" data-properties="seed quantity;seed quantity;seed shape;seed shape;seed shape"><b>Seeds </b>1 or 2 per locule, obovoid to broadly obovoid.</span><!--

-->{{Treatment/Body
|distribution=w United States
|discussion=<p>Species 2.</p><!--
--><p>P. H. Raven (1976), P. A. Munz (1965), and others noted the presence of an apiculus of brown oil cells at the leaf apex and suggested that this feature characterized sects. Cordylophorum and Xerolobium; however, further investigation of this character indicated that, while this feature is perhaps most prominent in these sections, similar apiculi occur in at least some taxa of all sections of Epilobium. Compared with the apiculi in subsect. Nuttalia, those in subsect. Petrolobium are particularly prominent and are a useful diagnostic character.</p><!--
--><p>The two species of subsect. Petrolobium also characteristically have only four to eight seeds per capsule, which is fewer than the number found in any other species of the genus.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Epilobium subsect. Petrolobium
|authority=P. H. Raven
|rank=subsection
|parent rank=section
|synonyms=
|basionyms=
|family=Onagraceae
|distribution=w United States
|reference=None
|publication title=Ann. Missouri Bot. Gard.
|publication year=1977
|special status=
|source xml=
|subfamily=Onagraceae subfam. Onagroideae
|tribe=Onagraceae tribe Epilobieae
|genus=Epilobium
|section=Epilobium sect. Cordylophorum
|subsection=Epilobium subsect. Petrolobium
|apical mucro duration=caducous
|apical mucro prominence=prominent
|flower architecture=actinomorphic
|herb arrangement=clumped
|herb growth form=suffrutescent
|leaf arrangement=sometimes;alternate;opposite
|leaf size=small
|petal coloration=rose-purple
|seed quantity=2;1
|seed shape=obovoid;broadly obovoid
}}<!--

-->[[Category:Treatment]][[Category:Epilobium sect. Cordylophorum]]