View source for Acaena pinnatifida

{{Treatment/ID
|accepted_name=Acaena pinnatifida
|accepted_authority=Ruiz & Pavón
|publications={{Treatment/Publication
|title=Fl. Peruv.
|place=1: 68, plate 104, fig. b. 1798
|year=1798
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Acaena californica
|authority=Bitter
|rank=species
}} {{Treatment/ID/Synonym
|name=A. pinnatifida var. californica
|authority=(Bitter) Jepson
|rank=variety
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Agrimonieae;Acaena;Acaena pinnatifida
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Rosoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Agrimonieae]]</div><div class="higher-taxon"><small>genus</small>[[Acaena]]</div><div class="higher-taxon"><small>species</small>[[Acaena pinnatifida]]</div></div>
|volume=Volume 9
|mention_page=
|treatment_page=page 324
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>from branched woody caudex. <b>Stems</b> decumbent, becoming suberect, 1.5–5 dm (in fruit), 4 mm diam.; branches erect or leafy. <b>Leaves</b> (crowded at bases of stems); stipules absent; petiole to 4 cm; blade 3–15 cm, leaflets 6–10 per side, gray-green (at least on dried specimens), ovate, 4–10 mm, pinnatisect, lobes 3–7(–11), linear, margins revolute, apex penicillate (having a little brush or tuft of hairs at tips), abaxial surface sericeous, adaxial sparsely pilose. <b>Scapes</b> terminal, to 50 cm, 1.5–3 mm diam., sparsely pilose, proximal scape and leaf sheaths with multicellular hairs among 1-celled hairs, with (0–)2–3 cauline leaves to 10 cm. <b>Inflorescences</b> 15–35-flowered, interrupted spikes, (flowers crowded distally, 2–15 cm in flower, elongating to 50 cm in fruit); bracteoles leaflike to linear, ciliate. <b>Flowers</b> 6 mm diam.; sepals 4–5, elliptic, 3 mm, abaxially pilose, adaxially glabrous; stamens usually 4, filaments 2–3 mm, anthers dark red; stigma rose, laciniate. <b>Fruiting</b> hypanthia ovoid, 3–4 mm diam., surfaces tomentose, obscurely 4-angled, bearing 10–20 spines in longitudinal ranks, to 3[–4] mm, spines with retrorse hairs or barbs.</span><!--

-->{{Treatment/Body
|phenology=Flowering Mar–Jun.
|habitat=Coastal grasslands, open rocky slopes, sand dunes, old roadsides
|elevation=50–400 m
|distribution=Calif.;South America (Argentina;Chile).
|discussion=<p>Herbarium records indicate occurrences of <i>Acaena pinnatifida</i> between Santa Barbara and Sonoma counties.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Acaena pinnatifida
|authority=Ruiz & Pavón
|rank=species
|parent rank=genus
|synonyms=Acaena californica;A. pinnatifida var. californica
|basionyms=
|family=Rosaceae
|phenology=Flowering Mar–Jun.
|habitat=Coastal grasslands, open rocky slopes, sand dunes, old roadsides
|elevation=50–400 m
|distribution=Calif.;South America (Argentina;Chile).
|reference=None
|publication title=Fl. Peruv.
|publication year=1798
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V9/V9_529.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Agrimonieae
|genus=Acaena
|species=Acaena pinnatifida
}}<!--

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