View source for Pisonia capitata

{{Treatment/ID
|accepted_name=Pisonia capitata
|accepted_authority=(S. Watson) Standley
|publications={{Treatment/Publication
|title=Contr. U.S. Natl. Herb.
|place=13: 388. 1911
|year=1911
}}
|basionyms={{Treatment/ID/Synonym
|name=Cryptocarpus capitatus
|authority=S. Watson
}}
|synonyms=
|hierarchy=Nyctaginaceae;Pisonia;Pisonia capitata
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Nyctaginaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pisonia]]</div><div class="higher-taxon"><small>species</small>[[Pisonia capitata]]</div></div>
|volume=Volume 4
|mention_page=page 72
|treatment_page=page 73
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="shrub some measurement;tree size;tree some measurement"><b>Shrubs </b>or small trees, to 6 m;</span> <span class="statement" id="st-d0_s1" data-properties="branch density;branch orientation;branch architecture;spine fragility or size;spine orientation;spine some measurement">branches dense, spreading at right angles, usually armed with stout, recurved spines 7–14 mm.</span> <span class="statement" id="st-d0_s2" data-properties="stem orientation;stem pubescence;stem pubescence;stem condition"><b>Stems </b>arching, velvety when young, glabrate later.</span> <span class="statement" id="st-d0_s3" data-properties="leaf-blade shape;leaf-blade shape;leaf-blade length;leaf-blade width;base shape;base shape;apex shape;apex shape"><b>Leaf-</b>blades broadly obovate or suborbiculate, 2–6 × 2–6 cm, base rounded or broadly cuneate, apex rounded, rarely subacute.</span> <span class="statement" id="st-d0_s4" data-properties=""><b>Inflorescences:</b> [staminate inflorescences subglobose, dense, 1–2 cm diam.];</span> <span class="statement" id="st-d0_s5" data-properties="inflorescence architecture;inflorescence shape;inflorescence architecture">pistillate inflorescences densely subglobose at anthesis, more open in age;</span> <span class="statement" id="st-d0_s6" data-properties="branch arrangement;branch orientation">branches divaricate or ascending;</span> <span class="statement" id="st-d0_s7" data-properties="inflorescence some measurement">fruiting pedicel 0.5–2 cm.</span> <span class="statement" id="st-d0_s8" data-properties=""><b>Perianths:</b> [perianth of staminate flowers deep red, broadly campanulate, 2–3 mm, densely and shortly viscid-villous];</span> <span class="statement" id="st-d0_s9" data-properties="perianth coloration;perianth coloration;perianth some measurement;perianth pubescence;flower architecture">perianth of pistillate flowers greenish, often blushed with red, 2–2.5 mm, densely puberulent.</span> <span class="statement" id="st-d0_s10" data-properties="fruit shape;fruit length;fruit width;fruit pubescence"><b>Fruits </b>clavate, 7–10 × 3–4 mm, densely puberulent between glandular ribs, glands extending entire length of fruits.</span><!--

-->{{Treatment/Body
|habitat=Protected clefts on rhyolitic soils in arid scrub [tropical deciduous forests, thickets, along watercourses]
|elevation=0-1100 m
|distribution=Ariz.;nw Mexico.
|discussion=<p>Pisonia capitata is represented in the flora by a single, possibly clonal, population of a few pistillate plants in south-central Arizona several hundred kilometers north of known populations in Sonora, perhaps originating from a freak event of bird dispersal. Plants are not known to have set seed.</p><!--
--><p>As noted above, pistillate plants of Pisonia capitata and P. aculeata exhibit no apparent differences, nor are there apparent vegetative differences between the species. That plants known in the flora truly represent P. aculeata is an assumption based on geography.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Pisonia capitata
|author=
|authority=(S. Watson) Standley
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Cryptocarpus capitatus
|family=Nyctaginaceae
|habitat=Protected clefts on rhyolitic soils in arid scrub [tropical deciduous forests, thickets, along watercourses]
|elevation=0-1100 m
|distribution=Ariz.;nw Mexico.
|reference=None
|publication title=Contr. U.S. Natl. Herb.
|publication year=1911
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V4/V4_152.xml
|genus=Pisonia
|species=Pisonia capitata
|apex shape=subacute;rounded
|base shape=cuneate;rounded
|branch architecture=armed
|branch arrangement=divaricate
|branch density=dense
|branch orientation=ascending;spreading
|flower architecture=pistillate
|fruit length=7mm;10mm
|fruit pubescence=puberulent
|fruit shape=clavate
|fruit width=3mm;4mm
|inflorescence architecture=open;pistillate
|inflorescence shape=subglobose
|inflorescence some measurement=0.5cm;2cm
|leaf-blade length=2cm;6cm
|leaf-blade shape=suborbiculate;obovate
|leaf-blade width=2cm;6cm
|perianth coloration=blushed with red;greenish
|perianth pubescence=puberulent
|perianth some measurement=2mm;2.5mm
|shrub some measurement=0m;6m
|spine fragility or size=stout
|spine orientation=recurved
|spine some measurement=7mm;14mm
|stem condition=later
|stem orientation=arching
|stem pubescence=glabrate;velvety
|tree size=small
|tree some measurement=0m;6m
}}<!--

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