View source for Ceanothus purpureus

{{Treatment/ID
|accepted_name=Ceanothus purpureus
|accepted_authority=Jepson
|publications={{Treatment/Publication
|title=Fl. W. Calif.,
|place=258. 1901
|year=1901
}}
|common_names=Holly-leaf ceanothus
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms=
|synonyms=
|hierarchy=Rhamnaceae;Ceanothus;Ceanothus subg. Cerastes;Ceanothus purpureus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rhamnaceae]]</div><div class="higher-taxon"><small>genus</small>[[Ceanothus]]</div><div class="higher-taxon"><small>subgenus</small>[[Ceanothus subg. Cerastes]]</div><div class="higher-taxon"><small>species</small>[[Ceanothus purpureus]]</div></div>
|volume=Volume 12
|mention_page=page 96
|treatment_page=page 106
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> 1–2 m. <b>Stems</b> erect to ascending, not rooting at nodes; branchlets reddish brown, sometimes glaucescent, rigid, glabrate. <b>Leaves</b> not fascicled, spreading to deflexed; petiole 0–2 mm; blade ± cupped, folded lengthwise adaxially, widely elliptic to widely obovate, 12–25 × 7–20 mm, base obtuse to cuneate, margins not revolute, spinose-dentate, teeth 7–15, apex rounded to sharply acute, abaxial surface pale green, sparsely strigillose, especially on veins, adaxial surface green to dark green, glabrous. <b>Inflorescences</b> axillary, 1.2–2.5 cm. <b>Flowers</b>: sepals, petals, and nectary deep blue to purple. <b>Capsules</b> 4–5 mm wide, lobed; valves smooth, horns subapical, prominent, slender, erect, intermediate ridges absent. <b>2n</b> = 24.</span><!--

-->{{Treatment/Body
|phenology=Flowering Feb–Apr.
|habitat=Rocky slopes and outcrops derived from volcanic substrates, chaparral, oak woodlands.
|elevation=100–400 m.
|distribution=Calif.
|discussion=<p><i>Ceanothus purpureus</i> is endemic to the Vaca Mountains (Napa and Solano counties); it has been confused with <i>C. jepsonii</i>, which differs by its 6–8-merous flowers, rugose capsule horns, prominent ridges between the horns, and distribution on serpentine soils.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Ceanothus purpureus
|authority=Jepson
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Rhamnaceae
|phenology=Flowering Feb–Apr.
|habitat=Rocky slopes and outcrops derived from volcanic substrates, chaparral, oak woodlands.
|elevation=100–400 m.
|distribution=Calif.
|reference=None
|publication title=Fl. W. Calif.,
|publication year=1901
|special status=Endemic;Conservation concern
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V12/V12_782.xml
|genus=Ceanothus
|subgenus=Ceanothus subg. Cerastes
|species=Ceanothus purpureus
}}<!--

-->[[Category:Treatment]][[Category:Ceanothus subg. Cerastes]]