View source for Exochorda

{{Treatment/ID
|accepted_name=Exochorda
|accepted_authority=Lindley
|publications={{Treatment/Publication
|title=Gard. Chron.
|place=1858: 925. 1858
|year=1858
}}
|common_names=Pearlbrush
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Exochordeae;Exochorda
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Amygdaloideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Exochordeae]]</div><div class="higher-taxon"><small>genus</small>[[Exochorda]]</div></div>
|etymology=Greek exo -, outside, and chorde, string, alluding to free placentary cords external to carpels
|volume=Volume 9
|mention_page=page 385
|treatment_page=page 384
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism atypical some measurement;whole_organism some measurement;whole_organism growth form"><b>Shrubs,</b> to 30 (–50) dm.</span> <span class="statement" id="st-d0_s1" data-properties="stem quantity;stem orientation"><b>Stems </b>1–20+, spreading to erect;</span> <span class="statement" id="st-d0_s2" data-properties="bark coloration;bark relief">bark brown to gray-brown on branches, not exfoliating;</span> <span class="statement" id="st-d0_s3" data-properties="">short-shoots absent;</span> <span class="statement" id="st-d0_s4" data-properties="short-shoot presence;short-shoot pubescence;short-shoot pubescence">glabrous or sparsely hairy in early season.</span> <span class="statement" id="st-d0_s5" data-properties="leaf duration;cauline leaf arrangement"><b>Leaves </b>deciduous, cauline, alternate;</span> <span class="statement" id="st-d0_s6" data-properties="stipule presence">stipules usually absent;</span> <span class="statement" id="st-d0_s7" data-properties="petiole presence;petiole height or length or size">petiole present, sometimes relatively short;</span> <span class="statement" id="st-d0_s8" data-properties="blade shape;blade atypical some measurement;blade some measurement;blade texture;margin prominence or shape;margin architecture or shape;margin architecture or shape;surface pubescence;surface pubescence">blade elliptic or oblong to oblong-obovate, 1.5–4.4 (–6) [–9] cm, membranous, margins flat, entire or serrate in distal 1/2, surfaces glabrous or hairy.</span> <span class="statement" id="st-d0_s9" data-properties="inflorescence position or structure subtype;inflorescence architecture;axis pubescence;axis pubescence"><b>Inflorescences </b>terminal, 4–10-flowered, racemes, axes glabrous or sparsely hairy prior to expansion of flowers;</span> <span class="statement" id="st-d0_s10" data-properties="bract presence">bracts present;</span> <span class="statement" id="st-d0_s11" data-properties="bracteole presence">bracteoles present.</span> <span class="statement" id="st-d0_s12" data-properties="pedicel presence"><b>Pedicels </b>present.</span> <span class="statement" id="st-d0_s13" data-properties="flower reproduction;flower diameter"><b>Flowers </b>bisexual (plants synoecious), appearing with leaves, 25–50 mm diam.;</span> <span class="statement" id="st-d0_s14" data-properties="hypanthium shape;hypanthium some measurement;hypanthium pubescence">hypanthium shallowly campanulate to obturbinate, 3.5–4.2 mm, glabrous;</span> <span class="statement" id="st-d0_s15" data-properties="sepal quantity;sepal orientation;sepal shape">sepals 5, ascending, triangular to broad-triangular or semiorbiculate;</span> <span class="statement" id="st-d0_s16" data-properties="petal quantity;petal coloration;petal shape;base shape">petals 5, white, [oblong] obovate to suborbiculate, base clawed;</span> <span class="statement" id="st-d0_s17" data-properties="stamen atypical quantity;stamen quantity;stamen height or length or size">stamens 15–20 [–30], shorter than petals;</span> <span class="statement" id="st-d0_s18" data-properties="torus presence">torus absent;</span> <span class="statement" id="st-d0_s19" data-properties="carpel quantity;carpel fusion;carpel pubescence;style quantity">carpels 5, connate, glabrous, styles 5;</span> <span class="statement" id="st-d0_s20" data-properties="ovule quantity;ovule quantity">ovules 1 or 2.</span> <span class="statement" id="st-d0_s21" data-properties="fruits capsule arrangement or shape;fruits capsule height or length or size;fruits capsule width;fruits capsule atypical some measurement;fruits capsule some measurement;fruits capsule pubescence;outline height or length or size"><b>Fruits </b>capsules, semicircular in outline, shorter than wide or as tall as wide in side view, 6–10 [–15] mm, glabrous;</span> <span class="statement" id="st-d0_s22" data-properties="hypanthium duration">hypanthium not persistent;</span> <span class="statement" id="st-d0_s23" data-properties="sepal duration">sepals not persistent.</span> <span class="statement" id="st-d0_s24" data-properties=""><b>Seeds </b>1 or 2 per capsule, winged.</span> <span class="statement" id="st-d0_s25" data-properties="seed quantity;seed quantity;seed architecture;x chromosome quantity">x = 8.</span><!--

-->{{Treatment/Body
|distribution=Asia;also in Europe;Australia
|introduced=true
|discussion=<p>Species 4 (1 in the flora).</p><!--
--><p>Species of Exochorda are attractive, spring-flowering shrubs with racemes of showy, white flowers, and are commonly planted.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Exochorda
|author=Arthur Haines
|authority=Lindley
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Rosaceae
|distribution=Asia;also in Europe;Australia
|introduced=true
|reference=None
|publication title=Gard. Chron.
|publication year=1858
|special status=Introduced
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V9/V9_640.xml
|subfamily=Rosaceae subfam. Amygdaloideae
|tribe=Rosaceae tribe Exochordeae
|genus=Exochorda
|axis pubescence=hairy;glabrous
|bark coloration=brown;gray-brown
|bark relief=not exfoliating
|base shape=clawed
|blade atypical some measurement=4.4cm;6cm
|blade shape=oblong;oblong-obovate
|blade some measurement=1.5cm;4.4cm
|blade texture=membranous
|bract presence=absent
|bracteole presence=absent
|carpel fusion=connate
|carpel pubescence=glabrous
|carpel quantity=5
|cauline leaf arrangement=alternate
|flower diameter=25mm;50mm
|flower reproduction=bisexual
|fruits capsule arrangement or shape=semicircular
|fruits capsule atypical some measurement=10mm;15mm
|fruits capsule height or length or size=as-tall-as
|fruits capsule pubescence=glabrous
|fruits capsule some measurement=6mm;10mm
|fruits capsule width=wide
|hypanthium duration=not persistent
|hypanthium pubescence=glabrous
|hypanthium shape=shallowly campanulate;obturbinate
|hypanthium some measurement=3.5mm;4.2mm
|inflorescence architecture=4-10-flowered
|inflorescence position or structure subtype=terminal
|leaf duration=deciduous
|margin architecture or shape=serrate;entire
|margin prominence or shape=flat
|outline height or length or size=shorter than wide
|ovule quantity=2;1
|pedicel presence=absent
|petal coloration=white
|petal quantity=5
|petal shape=obovate;suborbiculate
|petiole height or length or size=short
|petiole presence=absent
|seed architecture=winged
|seed quantity=2;1
|sepal duration=not persistent
|sepal orientation=ascending
|sepal quantity=5
|sepal shape=triangular;broad-triangular or semiorbiculate
|short-shoot presence=absent
|short-shoot pubescence=hairy;glabrous
|stamen atypical quantity=20;30
|stamen height or length or size=shorter
|stamen quantity=15;20
|stem orientation=spreading;erect
|stem quantity=1;20
|stipule presence=absent
|style quantity=5
|surface pubescence=hairy;glabrous
|torus presence=absent
|whole_organism atypical some measurement=30dm;50dm
|whole_organism growth form=shrub
|whole_organism some measurement=0dm;30dm
|x chromosome quantity=8
}}<!--

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