View source for Pilea

{{Treatment/ID
|accepted_name=Pilea
|accepted_authority=Lindley
|publications={{Treatment/Publication
|title=Coll. Bot., plate
|place=4 and text on facing page. 1821, name conserved
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Adicea
|authority=Rafinesque ex Britton & A. Brown
}}
|hierarchy=Urticaceae;Pilea
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Urticaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pilea]]</div></div>
|etymology=Latin pileus, felt cap, because of the calyx covering the achene
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> shrubs, or subshrubs, annual or perennial, glabrous. <b>Stems</b> simple or branched, erect, ascending, or repent. <b>Leaves</b> opposite; stipules present. <b>Leaf</b> blades paired, equal or unequal, ovate, margins dentate or entire; cystoliths linear, ± conspicuous. <b>Inflorescences</b> axillary, compact to lax cymes. <b>Flowers</b> unisexual, staminate and pistillate flowers in same cyme; bracts deltate to linear. <b>Staminate</b> flowers: tepals 4; stamens 4; pistillode conic. <b>Pistillate</b> flowers: tepals 3, equal or sometimes 1 tepal enlarged and hoodlike; staminodes 3, opposite tepals, under tension and ejecting mature achene; style and tufted stigma deciduous. <b>Achenes</b> sessile, laterally compressed, ovoid to teardrop-shaped, free from perianth at maturity, partly covered by hoodlike tepal. <b>x</b> = 12, 13.</span><!--

-->{{Treatment/Body
|distribution=Mostly tropical and subtropical regions worldwide except Australia and New Zealand.
|discussion=<p>Species ca. 400 (5 in the flora).</p><!--
--><p><i>Pilea</i> should be further revised.</p>
|tables=
|references={{Treatment/Reference
|id=chen1982a
|text=Chen, C. J. 1982. A monograph of Pilea (Urticaceae) in China. Bull. Bot. Res., Harbin 2: 1-132.
}}{{Treatment/Reference
|id=fernald1936a
|text=Fernald, M. L. 1936. Pilea in eastern North America. Contr. Gray Herb. 113: 169-170.
}}{{Treatment/Reference
|id=hermann1940a
|text=Hermann, F. J. 1940. The geographic distribution of Pilea fontana. Torreya 40: 118-120.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaf margins dentate; paired blades equal.
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Leaf margins entire; paired blades unequal.
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Achenes uniformly black except for very narrow, pale, marginal band, surface conspicuously pebbled with raised bosses.
|[[Pilea fontana|Pilea fontana]]
|-id=key-0-2
|2
|Achenes uniformly light colored or streaked with purple, surface smooth or purple striations sometimes slightly raised.
|[[Pilea pumila|Pilea pumila]]
|-id=key-0-3
|3
|Stems repent or prostrate.
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Stems erect or diffusely ascending.
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Herbs; leaf blades spatulate to obovate.
|[[Pilea microphylla|Pilea microphylla]]
|-id=key-0-4
|4
|Shrubs or subshrubs; leaf blades of 2 types, obovate and orbiculate to orbiculate-cordate.
|[[Pilea trianthemoides|Pilea trianthemoides]]
|}
</div></div><!--

-->{{#Taxon:
name=Pilea
|author=
|authority=Lindley
|rank=genus
|parent rank=family
|synonyms=Adicea
|basionyms=
|family=Urticaceae
|distribution=Mostly tropical and subtropical regions worldwide except Australia and New Zealand.
|reference=chen1982a;fernald1936a;hermann1940a
|publication title=Coll. Bot., plate
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V3/V3_1057.xml
|genus=Pilea
}}<!--

-->[[Category:Treatment]][[Category:Urticaceae]]