View source for Gordonia

{{Treatment/ID
|accepted_name=Gordonia
|accepted_authority=J. Ellis
|publications={{Treatment/Publication
|title=Philos. Trans.
|place=60: 520, plate 11. 1771, name conserved· [For James Gordon, ca. 1708–1781, correspondent of Linnaeus and nurseryman of Mile End, London],
}}
|basionyms={{Treatment/ID/Basionym
|name=Lasianthus
|authority=Adanson
|rank=genus
|publication_title=name rejected
|publication_place=
}}
|synonyms=
|hierarchy=Theaceae;Gordonia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Theaceae]]</div><div class="higher-taxon"><small>genus</small>[[Gordonia]]</div></div>
|volume=Volume 8
|mention_page=page 325
|treatment_page=page 324
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism atypical some measurement;whole_organism some measurement;whole_organism growth form"><b>Trees </b>to 25 [–30] m.</span> <span class="statement" id="st-d0_s1" data-properties="stem quantity"><b>Stems </b>1;</span> <span class="statement" id="st-d0_s2" data-properties="bark width;bark relief;tree life cycle">bark relatively thick, deeply fissured on older trees.</span> <span class="statement" id="st-d0_s3" data-properties="leaf duration"><b>Leaves </b>persistent;</span> <span class="statement" id="st-d0_s4" data-properties="petiole shape;petiole prominence;petiole prominence;point character;point character">petiole tapering from blade to insertion point, indistinct from blade, obvious at insertion point;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade texture;base shape;base shape;margin shape;apex shape;vein prominence;vein atypical quantity;vein quantity;midrib prominence;midrib shape">blade elliptic to oblanceolate, coriaceous, base cuneate then long-tapering, margins toothed at least apically, apex acute to obtuse, veins inconspicuous, to 8–15 [–17] pairs, midrib elevated abaxially, depressed adaxially.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence bract duration;inflorescence bract quantity;inflorescence bract arrangement;inflorescence bract position"><b>Inflorescence </b>bracts deciduous, 2–4, scattered proximal to calyx.</span> <span class="statement" id="st-d0_s7" data-properties="pedicel shape;pedicel atypical some measurement;pedicel some measurement"><b>Pedicels </b>terete, (3–) 5–7 cm.</span> <span class="statement" id="st-d0_s8" data-properties="flower diameter"><b>Flowers </b>5–7 cm diam.;</span> <span class="statement" id="st-d0_s9" data-properties="sepal duration;sepal fusion;sepal shape;sepal width;margin architecture or pubescence or shape;apex shape;apex pubescence">sepals persistent (deciduous on older fruits), connate proximally, concave, often thick, margins ciliate, apex rounded, sericeous;</span> <span class="statement" id="st-d0_s10" data-properties="petal quantity;petal fusion;petal coloration;petal size;base size;margin shape;outermost petal orientation;abaxial surface pubescence">petals 5, connate proximally, white, unequal, base constricted, margins crenulate, outermost petal incurved, abaxial surface silky-puberulent [stellate-pubescent];</span> <span class="statement" id="st-d0_s11" data-properties="stamen atypical quantity;stamen atypical quantity;stamen quantity;stamen fusion">stamens usually (50–) 75–125 (–150), [distinct] connate proximally;</span> <span class="statement" id="st-d0_s12" data-properties="pistil architecture">pistil 5-carpellate;</span> <span class="statement" id="st-d0_s13" data-properties="ovule atypical quantity;ovule quantity">ovules 4 (–8) per locule;</span> <span class="statement" id="st-d0_s14" data-properties="style quantity">styles 1 [absent];</span> <span class="statement" id="st-d0_s15" data-properties="stigma shape">stigmas 5-lobed.</span> <span class="statement" id="st-d0_s16" data-properties="capsule coloration;capsule shape;base shape;apex shape;apex dehiscence;sepal fusion"><b>Capsules </b>brown, ovoid, base rounded, apex acute, dehiscence loculicidal from apex only, sepals adnate to valves proximally;</span> <span class="statement" id="st-d0_s17" data-properties="columella duration">columella persistent.</span> <span class="statement" id="st-d0_s18" data-properties="seed atypical quantity;seed quantity;seed coloration;seed shape;seed architecture or shape;seed pubescence or relief"><b>Seeds </b>10–20 [–40], dark-brown, ovoid, asymmetric, rough, apical wing prominent.</span> <span class="statement" id="st-d0_s19" data-properties="apical wing prominence;x chromosome quantity;x chromosome quantity">x = 15 or 18.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;Central America;South America
|discussion=<p>Species 2+ (1 in the flora).</p><!--
--><p>Gordonia has little economic value; G. lasianthus is an ornamental of limited cultivation in the United States. The genus is distributed from the coastal plain of the southeastern United States to northern South America.</p><!--
--><p>Taxonomic questions abound in Gordonia. Some taxa formerly placed in it probably belong to Laplacea or Polyspora, neither represented in the flora area. Two New World species formerly included within Gordonia (Laplacea fruticosa (Schrader) Kobuski and L. portoricensis (Krug & Urban) Dyer) are more closely related to members of tribe Theeae than to Gordonia (tribe Gordonieae) based on analysis of DNA sequences (L. M. Prince and C. R. Parks 2001). Dozens of species of Laplacea have been named; A. L. Weitzman (pers. comm.), after careful examination of specimens throughout the distributional range, recognized only two species in the New World, L. fruticosa and L. haematoxylon. Similarly, Asian material formerly included in Gordonia (including Polyspora axillaris (Roxburgh ex Ker Gawler) Sweet, P. chrysandra, P. hainanensis, P. kwangsiensis (Hung T. Chang) C. X. Ye ex S. X. Yang, P. longicarpa, and P. yunnanensis) are also more closely related to members of tribe Theeae (Prince and Parks; Yang S. X. et al. 2004). A more detailed study is required to determine which, if any, species should be retained within Gordonia beyond the type, G. lasianthus, and G. brandegeei. The base chromosome number for this genus is unclear, with two conflicting reports for G. lasianthus, and no reports for G. brandegeei.</p>
|tables=
|references=
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-->{{#Taxon:
name=Gordonia
|authority=J. Ellis
|rank=genus
|parent rank=family
|synonyms=
|basionyms=Lasianthus
|family=Theaceae
|distribution=North America;Mexico;Central America;South America
|reference=None
|publication title=Philos. Trans.
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V8/V8_645.xml
|genus=Gordonia
|abaxial surface pubescence=silky-puberulent
|apex dehiscence=loculicidal
|apex pubescence=sericeous
|apex shape=acute;rounded;acute;obtuse
|apical wing prominence=prominent
|bark relief=fissured
|bark width=thick
|base shape=rounded;long-tapering;cuneate
|base size=constricted
|blade shape=elliptic;oblanceolate
|blade texture=coriaceous
|capsule coloration=brown
|capsule shape=ovoid
|columella duration=persistent
|flower diameter=5cm;7cm
|inflorescence bract arrangement=scattered
|inflorescence bract duration=deciduous
|inflorescence bract position=proximal
|inflorescence bract quantity=2;4
|leaf duration=persistent
|margin architecture or pubescence or shape=ciliate
|margin shape=crenulate;toothed
|midrib prominence=elevated
|midrib shape=depressed
|outermost petal orientation=incurved
|ovule atypical quantity=4;8
|ovule quantity=4
|pedicel atypical some measurement=3cm;5cm
|pedicel shape=terete
|pedicel some measurement=5cm;7cm
|petal coloration=white
|petal fusion=connate
|petal quantity=5
|petal size=unequal
|petiole prominence=obvious;indistinct
|petiole shape=tapering
|pistil architecture=5-carpellate
|point character=insertion;insertion
|seed architecture or shape=asymmetric
|seed atypical quantity=20;40
|seed coloration=dark-brown
|seed pubescence or relief=rough
|seed quantity=10;20
|seed shape=ovoid
|sepal duration=persistent
|sepal fusion=adnate;connate
|sepal shape=concave
|sepal width=thick
|stamen atypical quantity=125;150
|stamen fusion=connate
|stamen quantity=75;125
|stem quantity=1
|stigma shape=5-lobed
|style quantity=1
|tree life cycle=older
|vein atypical quantity=15;17
|vein prominence=inconspicuous
|vein quantity=8;15
|whole_organism atypical some measurement=25m;30m
|whole_organism growth form=tree
|whole_organism some measurement=0m;25m
|x chromosome quantity=18;15
}}<!--

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