View source for Peltandra

{{Treatment/ID
|accepted_name=Peltandra
|accepted_authority=Rafinesque
|publications={{Treatment/Publication
|title=Journal de Physique, de Chimie, d'Histoire Naturelle et des Arts
|place=89:103. 1819
|year=1819
}}
|common_names=Arrow arum
|basionyms=
|synonyms=
|hierarchy=Araceae;Peltandra
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Araceae]]</div><div class="higher-taxon"><small>genus</small>[[Peltandra]]</div></div>
|etymology=Greek pelte, small shield, and andros, male, referring to the shield-shaped tops of the staminate flowers
|volume=Volume 22
|mention_page=page 136
|treatment_page=page 135
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form"><b>Herbs,</b> wetland.</span> <span class="statement" id="st-d0_s1" data-properties="rhizome orientation"><b>Rhizomes </b>vertical.</span> <span class="statement" id="st-d0_s2" data-properties="leaf quantity;leaf arrangement or growth form;leaf orientation"><b>Leaves </b>appearing before flowers, several, clustered apically, erect;</span> <span class="statement" id="st-d0_s3" data-properties="petiole variability;petiole length or size">petiole equal to or longer than blade;</span> <span class="statement" id="st-d0_s4" data-properties="blade coloration;blade coloration;blade coloration;blade architecture;blade architecture;blade shape;base shape;base shape;apex shape">blade green or glaucous light green, simple, not peltate, lanceolate to widely ovate, base hastate to sagittate, rarely cordate, apex acuminate to rounded or mucronate;</span> <span class="statement" id="st-d0_s5" data-properties="lateral-vein arrangement">lateral-veins parallel.</span> <span class="statement" id="st-d0_s6" data-properties="peduncle orientation;petiole length or size;petiole length or size;apex shape"><b>Inflorescences:</b> peduncle recurving in fruit, half ½ as long as to slightly longer than petiole, apex not swollen;</span> <span class="statement" id="st-d0_s7" data-properties="spathe tube coloration">spathe tube green, enclosing base of spadix;</span> <span class="statement" id="st-d0_s8" data-properties="spathe blade coloration">spathe blade green to white, opening slightly to fully at anthesis;</span> <span class="statement" id="st-d0_s9" data-properties="spadix shape">spadix cylindric.</span> <span class="statement" id="st-d0_s10" data-properties="flower reproduction;flower architecture;flower architecture;flower architecture;flower architecture;flower position;stamen quantity;stamen fusion;synandrium shape;synandrium quantity;synandrium fusion"><b>Flowers </b>unisexual, staminate and pistillate on same plant,, pistillate flowers covering basal portion of spadix,, staminate flowers apical, consisting of 4–5 connate stamens forming flat-topped synandrium;</span> <span class="statement" id="st-d0_s11" data-properties="flower reproduction;flower position;flower position or shape;flower architecture">sterile flowers proximal to and usually distal to staminate flowers;</span> <span class="statement" id="st-d0_s12" data-properties="perianth presence">perianth absent.</span> <span class="statement" id="st-d0_s13" data-properties="fruit coloration"><b>Fruits </b>not embedded in spadix, red or green to dark purple-green.</span> <span class="statement" id="st-d0_s14" data-properties="seed atypical quantity;seed quantity"><b>Seeds </b>1–2 (–4), mucilage present.</span> <span class="statement" id="st-d0_s15" data-properties="mucilage presence;x chromosome quantity">x = 14.</span><!--

-->{{Treatment/Body
|distribution=Eastern North America
|discussion=<p>Only one species of Peltandra, P. virginica, (with two subspecies), was recognized by W. H. Blackwell and K. P. Blackwell (1974), a treatment followed by some botanists. They synonymized P. luteospadix with P. sagittifolia, based primarily on their contention that no Peltandra species have red fruits, and called that taxon P. virginica subsp. luteospadix (Fernald) Blackwell & Blackwell. All of the specimens cited in their treatment of the genus are P. virginica.</p><!--
--><p>The two species of Peltandra can be distinguished not only on reproductive charactersistics, but also on features of leaf venation. Fossil leaves congeneric with modern Peltandra are known from very late Paleocene through early Eocene deposits of North America. Peltandra is one of two genera of Araceae endemic to the flora area (the other is Orontium).</p><!--
--><p>Species 2 (2 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=blackwell1974a
|text=Blackwell, W. H., Jr. and K. P. Blackwell. 1974. The taxonomy of Peltandra (Araceae). J. Elisha Mitchell Sci. Soc. 90: 137--140.
}}{{Treatment/Reference
|id=thompson1995a
|text=Thompson, S. A. 1995. Systematics and biology of the Araceae and Acoraceae of temperate North America. Ph.D. dissertation, University of Illinois.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Lateral leaf veins of ± same thickness; spadix ±about 1/2 as long as spathe; spathe blade white; fruits red
|[[Peltandra sagittifolia|Peltandra sagittifolia]]
|-id=key-0-1
|1
|Lateral leaf veins of 2 different thicknesses; spadix more than 1/2 to almost as long as spathe; spathe blade green to green with white or yellow-green along margins; fruits pea green to mottled green or dark purple-green
|[[Peltandra virginica|Peltandra virginica]]
|}
</div></div><!--

-->{{#Taxon:
name=Peltandra
|authority=Rafinesque
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Araceae
|distribution=Eastern North America
|reference=blackwell1974a;thompson1995a
|publication title=Journal de Physique, de Chimie, d'Histoire Naturelle et des Arts
|publication year=1819
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/62857cf6bca5c4637d27b113da92d27dbf9962f4/V22/V22_102.xml
|genus=Peltandra
|apex shape=not swollen;acuminate;rounded or mucronate
|base shape=cordate;hastate;sagittate
|blade architecture=not peltate;simple
|blade coloration=light green;glaucous;green
|blade shape=lanceolate;widely ovate
|flower architecture=staminate;staminate;pistillate;pistillate;staminate
|flower position=proximal;apical
|flower position or shape=distal
|flower reproduction=sterile;unisexual
|fruit coloration=green;dark purple-green
|lateral-vein arrangement=parallel
|leaf arrangement or growth form=clustered
|leaf orientation=erect
|leaf quantity=several
|mucilage presence=absent
|peduncle orientation=recurving
|perianth presence=absent
|petiole length or size=longer;longer;longer
|petiole variability=equal
|rhizome orientation=vertical
|seed atypical quantity=2;4
|seed quantity=1;2
|spadix shape=cylindric
|spathe blade coloration=green;white
|spathe tube coloration=green
|stamen fusion=connate
|stamen quantity=4;5
|synandrium fusion=connate
|synandrium quantity=4;5
|synandrium shape=flat-topped
|whole_organism growth form=herb
|x chromosome quantity=14
}}<!--

-->[[Category:Treatment]][[Category:Araceae]]