View source for Halesia ← Halesia You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Halesia |accepted_authority=J. Ellis ex Linnaeus |publications={{Treatment/Publication |title=Syst. Nat. ed. |place=10, 2: 1041, 1044, 1369. 1759, name conserved , }} |common_names=Silverbell;snowdrop tree |basionyms= |synonyms= |hierarchy=Styracaceae;Halesia |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Styracaceae]]</div><div class="higher-taxon"><small>genus</small>[[Halesia]]</div></div> |etymology=For Stephen Hales, 1677–1761, English botanist |volume=Volume 8 |mention_page=page 339, 340 |treatment_page=page 346 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form;whole_organism growth form;pith architecture"><b>Shrubs </b>or trees: pith chambered [continuous];</span> <span class="statement" id="st-d0_s1" data-properties="whole_organism growth form;whole_organism growth form;bud season">winter buds with scales;</span> <span class="statement" id="st-d0_s2" data-properties="whole_organism growth form;whole_organism growth form;shoot reproduction;leaf development">fertile shoots of current growing season without fully developed leaves (rarely fully developed in H. diptera).</span> <span class="statement" id="st-d0_s3" data-properties="margin architecture or shape"><b>Leaf-</b>blades: margins serrate.</span> <span class="statement" id="st-d0_s4" data-properties="inflorescence presence;axillary raceme growth order;axillary raceme condition or size;axillary flower growth order;axillary flower condition or size;axillary flower architecture;axillary flower architecture or arrangement or growth form;axillary articulation growth order;axillary articulation condition or size;axillary articulation architecture;axillary articulation architecture or arrangement or growth form;axillary pedicel growth order;axillary pedicel condition or size;axillary pedicel architecture;axillary pedicel architecture or arrangement or growth form;axillary flower growth order;axillary flower condition or size;axillary flower architecture;axillary flower architecture or arrangement or growth form"><b>Inflorescences </b>borne on shoots of previous growing season, contracted axillary racemes, usually (2–) 3–6-flowered, sometimes solitary flowers, articulation between pedicel and flower present.</span> <span class="statement" id="st-d0_s5" data-properties="hypanthium fusion"><b>Flowers:</b> hypanthium completely adnate to ovary wall;</span> <span class="statement" id="st-d0_s6" data-properties="sepal quantity;sepal fusion">sepals 4, distinct;</span> <span class="statement" id="st-d0_s7" data-properties="corolla lobe quantity;corolla lobe arrangement;portion fusion;androecium fusion;androecium fusion">corolla lobes 4, imbricate in bud, portion free from androecium distinct or connate proximally;</span> <span class="statement" id="st-d0_s8" data-properties="stamen quantity">stamens 7–16;</span> <span class="statement" id="st-d0_s9" data-properties="portion fusion;portion fusion">filaments with free portion connate proximally;</span> <span class="statement" id="st-d0_s10" data-properties="pistil architecture">pistil 2–4-carpellate;</span> <span class="statement" id="st-d0_s11" data-properties="ovary position;ovary architecture">ovary inferior, proximally 2–4-septate;</span> <span class="statement" id="st-d0_s12" data-properties="ovule quantity;ovule position;ovule orientation;ovule quantity;ovule position or shape;ovule orientation;ovule architecture;carpel quantity">ovules 4 per carpel, 2 proximal pendulous, 2 distal erect, unitegmic.</span> <span class="statement" id="st-d0_s13" data-properties="fruit architecture or shape;fruit shape;fruit shape;fruit shape;fruit shape;fruit shape;wing quantity;wing pubescence or texture"><b>Fruits </b>nutlike, with 2 or 4 longitudinal, corky wings, oblong, ellipsoid, or clavate;</span> <span class="statement" id="st-d0_s14" data-properties="beak fusion">beak distinct.</span> <span class="statement" id="st-d0_s15" data-properties="seed quantity;seed architecture;seed shape"><b>Seeds </b>1–4, not filling fruit cavity, not grooved, fusiform;</span> <span class="statement" id="st-d0_s16" data-properties="hilum prominence">hilum inconspicuous;</span> <span class="statement" id="st-d0_s17" data-properties="">seed-coat thin.</span> <span class="statement" id="st-d0_s18" data-properties="seed-coat width;x chromosome quantity">x = 12.</span><!-- -->{{Treatment/Body |distribution=e United States;Asia (China);warm-temperate areas |discussion=<p>Species 3 (2 in the flora).</p><!-- --><p>Combined morphological and molecular data support a clade of Halesia, Melliodendron, Parastyrax, Pterostyrax, and Rehderodendron (P. W. Fritsch et al. 2001). All of these genera share the same type of ovary architecture, with two apotropous distal ovules and two epitropous proximal ovules per carpel, as well as similarities in fruit and seed morphology. The genus is unusual for an eastern Asian-eastern North American disjunct in that more species occur in North America than in Asia. A morphological phylogenetic estimate of Halesia places the two North American taxa as the sister group of the Asian species H. macgregorii Chun. In contrast, DNA sequence data place H. macgregorii as sister to Rehderodendron and the two United States species as unresolved as to their closest relative (Fritsch et al.).</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Corollas glabrous, tube 7-26 mm; stamens 12-16; filaments adnate to corolla 2-3 mm; styles glabrous; fruits 4-winged, wings roughly equal. |[[Halesia carolina|Halesia carolina]] |-id=key-0-1 |1 |Corollas hairy, tube to 1 mm; stamens 7-10; filaments adnate to corolla to 1 mm; styles hairy; fruits 2- or 4-winged, if 4-winged then 2 broad wings alternate with 2 much narrower wings. |[[Halesia diptera|Halesia diptera]] |} </div></div><!-- -->{{#Taxon: name=Halesia |authority=J. Ellis ex Linnaeus |rank=genus |parent rank=family |synonyms= |basionyms= |family=Styracaceae |distribution=e United States;Asia (China);warm-temperate areas |reference=None |publication title=Syst. Nat. ed. |publication year= |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V8/V8_680.xml |genus=Halesia |androecium fusion=connate;distinct |axillary articulation architecture=(2-)3-6-flowered |axillary articulation architecture or arrangement or growth form=solitary |axillary articulation condition or size=contracted |axillary articulation growth order=previous |axillary flower architecture=(2-)3-6-flowered;(2-)3-6-flowered |axillary flower architecture or arrangement or growth form=solitary;solitary |axillary flower condition or size=contracted;contracted |axillary flower growth order=previous;previous |axillary pedicel architecture=(2-)3-6-flowered |axillary pedicel architecture or arrangement or growth form=solitary |axillary pedicel condition or size=contracted |axillary pedicel growth order=previous |axillary raceme condition or size=contracted |axillary raceme growth order=previous |beak fusion=distinct |bud season=winter |carpel quantity=2 |corolla lobe arrangement=imbricate |corolla lobe quantity=4 |fruit architecture or shape=nutlike |fruit shape=clavate;ellipsoid;clavate;ellipsoid;oblong |hilum prominence=inconspicuous |hypanthium fusion=adnate |inflorescence presence=absent |leaf development=developed |margin architecture or shape=serrate |ovary architecture=2-4-septate |ovary position=inferior |ovule architecture=unitegmic |ovule orientation=erect;pendulous |ovule position=proximal |ovule position or shape=distal |ovule quantity=2;4 |pistil architecture=2-4-carpellate |pith architecture=chambered |portion fusion=connate;free;free |seed architecture=grooved |seed quantity=1;4 |seed shape=fusiform |seed-coat width=thin |sepal fusion=distinct |sepal quantity=4 |shoot reproduction=fertile |stamen quantity=7;16 |whole_organism growth form=tree;shrub;tree;shrub;tree;shrub |wing pubescence or texture=corky |wing quantity=2 |x chromosome quantity=12 }}<!-- -->[[Category:Treatment]][[Category:Styracaceae]] Templates used on this page: Template:Styracaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Return to Halesia.