View source for Nyssa

{{Treatment/ID
|accepted_name=Nyssa
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 1058. 1753
|year=1753
}}
|common_names=Tupelo
|basionyms=
|synonyms=
|hierarchy=Nyssaceae;Nyssa
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Nyssaceae]]</div><div class="higher-taxon"><small>genus</small>[[Nyssa]]</div></div>
|etymology=Classical Greek name for a water nymph, alluding to habitat
|volume=Volume 12
|mention_page=page 438, 443, 458
|treatment_page=page 459
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>or trees; bark gray brown, rough, ridged; twigs with transverse diaphragms; winter buds scaly. <b>Leaves</b>: petiole terete or winged; blade usually elliptic to oblanceolate or obovate, rarely ovate, base cuneate to rounded. <b>Pedicels</b>: staminate present or absent, bisexual and pistillate absent [present]. <b>Flowers</b>: sepals forming a low rim; petals greenish to greenish white; style subulate or conic. <b>Drupes</b> usually blue-black (sometimes reddish purple in <i>N. aquatica</i>; yellow, orange, or red in <i>N. ogeche</i>), topped by persistent remnants of sepals; mesocarp juicy, acidic.</span><!--

-->{{Treatment/Body
|distribution=c;e North America;Mexico;Central America (Costa Rica;Panama);e Asia.
|discussion=<p>Species ca. 13 (5 in the flora).</p><!--
--><p>Plant sexuality in <i>Nyssa</i> is complicated and often difficult to determine. R. E. Burckhalter (1992) described all North American species as dioecious, without elaboration. The most widely distributed species in the flora area, <i>N. sylvatica</i>, has both staminate and morphologically bisexual flowers and appears to be androdioecious, but is functionally dioecious, as anthers of bisexual flowers do not dehisce (R. H. Eyde 1963; M. L. Cipollini and E. W. Stiles 1991). Similarly, the Chinese N. yunnanensis W. Q. Yin ex H. N. Qin & Phengklai appears to be androdioecious but is functionally dioecious; in this case pollen from the morphologically bisexual flowers is inaperturate and inviable, rendering the trees that bear these flowers functionally pistillate (Sun B.-L. et al. 2009). <i>Nyssa ogeche</i> appears to be polygamodioecious and other North American species appear to be monoecious or polygamomonoecious, but their reproductive biology has not been examined carefully.</p><!--
--><p>Measurements of leaves refer to fully expanded ones from mid shoot (earlier leaves typically are smaller).</p>
|tables=
|references={{Treatment/Reference
|id=burckhalter1992a
|text=Burckhalter, R. E. 1992. The genus Nyssa (Cornaceae) in North America: A revision. Sida 15: 323–342.
}}{{Treatment/Reference
|id=wen1993a
|text=Wen, J. and T. F. Stuessy. 1993. The phylogeny and biogeography of Nyssa (Cornaceae). Syst. Bot. 18: 68–79.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Drupes 22–28 mm; ovaries hairy; staminate pedicels absent.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Petioles 30–60 mm; drupes punctate, black to blue or reddish purple.
|[[Nyssa aquatica|Nyssa aquatica]]
|-id=key-0-2
|2
|Petioles 6–20(–35) mm; drupes smooth, yellow, orange, or red.
|[[Nyssa ogeche|Nyssa ogeche]]
|-id=key-0-1
|1
|Drupes 7–14 mm; ovaries glabrous; staminate pedicels present.
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Shrubs or trees, 2–5 m; Florida panhandle region.
|[[Nyssa ursina|Nyssa ursina]]
|-id=key-0-3
|3
|Trees, 5–30 m; widespread in c, e North America, including Florida.
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Leaf blades herbaceous, obovate to elliptic, apices acute to acuminate, margins entire proximally and 0–1(–3)-toothed distally; bark ± regularly longitudinally and transversely fissured; pistillate and bisexual inflorescences (2–)3–5(–8)-flowered.
|[[Nyssa sylvatica|Nyssa sylvatica]]
|-id=key-0-4
|4
|Leaf blades subcoriaceous, usually oblanceolate to narrowly elliptic, rarely ovate, apices obtuse to acute, margins usually entire, rarely coarsely dentate distally; bark irregularly fissured; pistillate and bisexual inflorescences 1–3-flowered.
|[[Nyssa biflora|Nyssa biflora]]
|}
</div></div><!--

-->{{#Taxon:
name=Nyssa
|author=Gordon C. Tucker;Tracy J. Park
|authority=Linnaeus
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Nyssaceae
|distribution=c;e North America;Mexico;Central America (Costa Rica;Panama);e Asia.
|reference=burckhalter1992a;wen1993a
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V12/V12_137.xml
|genus=Nyssa
}}<!--

-->[[Category:Treatment]][[Category:Nyssaceae]]