View source for Cornus subg. Thelycrania

{{Treatment/ID
|accepted_name=Cornus subg. Thelycrania
|accepted_authority=(Dumortier) C. K. Schneider
|publications={{Treatment/Publication
|title=Ill. Handb. Laubholzk.
|place=2: 437. 1909
|year=1909
}}
|basionyms={{Treatment/ID/Basionym
|name=Cornus
|authority=Thelycrania Dumortier
|rank=genus
|publication_title=Fl. Belg.,
|publication_place=83. 1827
}}
|synonyms=
|hierarchy=Cornaceae;Cornus;Cornus subg. Thelycrania
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cornaceae]]</div><div class="higher-taxon"><small>genus</small>[[Cornus]]</div><div class="higher-taxon"><small>subgenus</small>[[Cornus subg. Thelycrania]]</div></div>
|volume=Volume 12
|mention_page=page 444, 451
|treatment_page=page 450
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form;whole_organism growth form"><b>Shrubs </b>or trees;</span> <span class="statement" id="st-d0_s1" data-properties="rhizome presence;rhizome presence">rhizomes present or absent.</span> <span class="statement" id="st-d0_s2" data-properties="branch arrangement;branch arrangement;branch arrangement;branch arrangement;branch arrangement;branch arrangement;leaf arrangement;leaf arrangement;leaf arrangement;leaf arrangement;leaf arrangement;leaf arrangement"><b>Branches </b>and leaves usually opposite, rarely whorled, subopposite, or alternate at some nodes.</span> <span class="statement" id="st-d0_s3" data-properties=""><b>Inflorescences </b>cymes;</span> <span class="statement" id="st-d0_s4" data-properties="bract quantity;bract size;bract architecture;primary branch position;proximal portion fusion;portion fusion;portion duration">bracts numerous, minute, not petaloid, subtending primary and secondary inflorescence branches, proximal portion adnate to branch, free portion caducous.</span> <span class="statement" id="st-d0_s5" data-properties="pedicel presence"><b>Pedicels </b>present.</span> <span class="statement" id="st-d0_s6" data-properties="drupe fusion"><b>Drupes </b>distinct;</span> <span class="statement" id="st-d0_s7" data-properties="stone apex shape;stone apex shape;dimple prominence">stone apex rounded, pointed, or with slight dimple.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;Central America;n;w South America;Eurasia
|discussion=<p>Species ca. 30 (11 in the flora).</p><!--
--><p>What is treated here as subg. Thelycrania has almost invariably been called subg. Kraniopsis Rafinesque. That name is invalid, however, because C. S. Rafinesque (1838) apparently treated his new taxon as a genus, not a subgenus, and no publication validating the name at the subgeneric rank has been located.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaf secondary veins usually (4–)5–9 per side.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Bark splitting longitudinally, appearing braided; lenticels not protruding on 2d year branches; leaf blade abaxial surfaces without tufts of erect hairs in axils of secondary veins.
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Leaf blade bases cuneate, abaxial surface hairs all appressed and rigid, secondary veins evenly spaced.
|[[Cornus obliqua|Cornus obliqua]]
|-id=key-0-3
|3
|Leaf blade bases rounded or truncate, abaxial surface hairs both appressed and rigid, and erect and curling, most secondary veins arising from proximal 1/2 of blade.
|[[Cornus amomum|Cornus amomum]]
|-id=key-0-2
|2
|Bark loosely verrucose; lenticels protruding on 2d year branches; leaf blade abaxial surfaces with tufts of erect hairs in axils of secondary veins.
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Area surrounding lenticels suffused with purple on older branches; leaf blades suborbiculate or broadly ovate, secondary veins 7–9 per side, evenly spaced, tertiary veins usually prominent.
|[[Cornus rugosa|Cornus rugosa]]
|-id=key-0-4
|4
|Area surrounding lenticels not suffused with purple on older branches; leaf blades lanceolate, elliptic, or ovate, secondary veins 5–7 per side, most arising from proximal 1/2, tertiary veins not prominent.
|[[#key-0-5| > 5]]
|-id=key-0-5
|5
|Leaf blade abaxial surface hairs appressed except in and near axils of secondary veins.
|[[Cornus sericea|Cornus sericea]]
|-id=key-0-5
|5
|Leaf blade abaxial surface hairs (except those on veins) all erect.
|[[Cornus occidentalis|Cornus occidentalis]]
|-id=key-0-1
|1
|Leaf secondary veins usually 3–4(–5) per side.
|[[#key-0-6| > 6]]
|-id=key-0-6
|6
|Leaf blade abaxial surface hairs curved upward, erect, or both erect and appressed.
|[[#key-0-7| > 7]]
|-id=key-0-7
|7
|Drupes purple-black; rhizomes absent; stems clustered.
|[[Cornus sanguinea|Cornus sanguinea]]
|-id=key-0-7
|7
|Drupes blue to whitish blue or white; rhizomes present; stems solitary.
|[[#key-0-8| > 8]]
|-id=key-0-8
|8
|Petioles 2–7 mm; leaf secondary veins evenly spaced; drupes blue to whitish blue.
|[[Cornus asperifolia|Cornus asperifolia]]
|-id=key-0-8
|8
|Petioles 8–25 mm; most leaf secondary veins arising from proximal 1/2 of blade; drupes white.
|[[Cornus drummondii|Cornus drummondii]]
|-id=key-0-6
|6
|Leaf blade abaxial surface hairs appressed.
|[[#key-0-9| > 9]]
|-id=key-0-9
|9
|Rhizomes present; stems solitary; lenticels protruding and extruding tissue on 2d year branches; bark appearing verrucose; drupes usually white, occasionally pale blue.
|[[Cornus racemosa|Cornus racemosa]]
|-id=key-0-9
|9
|Rhizomes absent; stems clustered; lenticels not or seldom protruding or extruding tissue on 2d year branches; bark appearing braided; drupes blue, pale blue, violet plumbeous, or blue violet, often turning whitish blue to white.
|[[#key-0-10| > 10]]
|-id=key-0-10
|10
|Basal secondary leaf vein arising 1–2 mm from blade base; e, c United States.
|[[Cornus foemina|Cornus foemina]]
|-id=key-0-10
|10
|Basal secondary leaf vein arising 5–10 mm from blade base; California, Oregon.
|[[Cornus glabrata|Cornus glabrata]]
|}
</div></div><!--

-->{{#Taxon:
name=Cornus subg. Thelycrania
|authority=(Dumortier) C. K. Schneider
|rank=subgenus
|parent rank=genus
|synonyms=
|basionyms=Cornus
|family=Cornaceae
|distribution=North America;Mexico;Central America;n;w South America;Eurasia
|reference=None
|publication title=Ill. Handb. Laubholzk.
|publication year=1909
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V12/V12_778.xml
|genus=Cornus
|subgenus=Cornus subg. Thelycrania
|bract architecture=not petaloid
|bract quantity=numerous
|bract size=minute
|branch arrangement=alternate;subopposite;alternate;subopposite;whorled;opposite
|dimple prominence=slight
|drupe fusion=distinct
|leaf arrangement=alternate;subopposite;alternate;subopposite;whorled;opposite
|pedicel presence=absent
|portion duration=caducous
|portion fusion=free
|primary branch position=subtending
|proximal portion fusion=adnate
|rhizome presence=absent;absent
|stone apex shape=pointed;rounded
|whole_organism growth form=tree;shrub
}}<!--

-->[[Category:Treatment]][[Category:Cornus]]