View source for Munzothamnus blairii

{{Treatment/ID
|accepted_name=Munzothamnus blairii
|accepted_authority=(Munz & I. M. Johnston) P. H. Raven
|publications={{Treatment/Publication
|title=Aliso
|place=5: 345. 1963
|year=1963
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms={{Treatment/ID/Basionym
|name=Stephanomeria blairii
|authority=Munz & I. M. Johnston
|rank=species
|publication_title=Bull. Torrey Bot. Club
|publication_place=51: 301. 1924 (as blairi)
}}
|synonyms={{Treatment/ID/Synonym
|name=Malacothrix blairii
|authority=(Munz & I. M. Johnston) Munz & I. M. Johnston
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Munzothamnus;Munzothamnus blairii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cichorieae]]</div><div class="higher-taxon"><small>genus</small>[[Munzothamnus]]</div><div class="higher-taxon"><small>species</small>[[Munzothamnus blairii]]</div></div>
|volume=Volume 19
|mention_page=page 350, 351
|treatment_page=page 349
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="branch thickness;branch texture;petiole base duration"><b>Stems:</b> branches to 1 cm thick, fleshy, studded with persistent petiole bases proximally.</span> <span class="statement" id="st-d0_s1" data-properties="leaf arrangement;leaf arrangement"><b>Leaves </b>crowded or tufted at ends of branches;</span> <span class="statement" id="st-d0_s2" data-properties="petiole some measurement;petiole architecture;base size or width">petioles ca. 1 cm, narrowly winged, bases thickened;</span> <span class="statement" id="st-d0_s3" data-properties="blade coloration;blade length;blade width;blade width;base shape;apex shape;apex shape;face pubescence;face pubescence">blades bright green, 5–13 × 4–6 cm, relatively thin, bases cuneate, apices rounded or obtuse, faces ± tomentose, soon glabrescent.</span> <span class="statement" id="st-d0_s4" data-properties="head quantity"><b>Heads </b>20–35.</span> <span class="statement" id="st-d0_s5" data-properties="cypsela some measurement;2n chromosome quantity"><b>Cypselae </b>3–3.5 mm. <b>2n</b> = 16.</span><!--

-->{{Treatment/Body
|phenology=Flowering Sep–Nov.
|habitat=Rocky canyon walls
|elevation=60–300 m
|distribution=Calif.
|discussion=<p>Munzothamnus blairii is known only from San Clemente Island. It has been placed in several taxonomic homes. It was initially placed in Stephanomeria; it was transferred to Malacothrix (P. A. Munz 1935). P. H. Raven (1963) considered it “clearly a relictual and highly isolated genus,” primarily on the basis of its leaf shape and vegetative architecture, which are significantly distinct from those found in any species of Stephanomeria or Malacothrix, and he erected Munzothamnus for it. Others emphasized the similar number and appearance of the chromosomes of M. blairii to those of Stephanomeria as well as certain similarities between their pappi (number and “coarseness”) and concluded that the species belongs in Stephanomeria (G. L. Stebbins et al. 1953). In addition, pollen size and sculpturing are similar to that of Stephanomeria (A. S. Tomb 1974).</p><!--
--><p>The mode of branch growth was nicely described by S. Carlquist (1974). At the end of the first year, basal lateral buds on the main stem produce side shoots. At the end of the second year, those shoots produce terminal clusters of heads. At the end of the third year, those same side shoots produce new lateral shoots from distal nodes below the heads. Thus, the plants produce shoots from lateral buds both at the base of the stem and from nodes on side shoots below the terminal clusters.</p><!--
--><p>The growth pattern, architecture, and habit of Munzothamnus blairii are not at all similar to those of Stephanomeria guadalupensis Brandegee, an endemic of Guadalupe Island, Mexico, nor to those of S. cichoriacea, which grows in the equable climate of southern coastal California and on off-shore islands. The contrast between M. blairii and those undoubted stephanomerias is noteworthy. That Munzothamnus blairii is best regarded as a monotypic genus is also supported by recent results of DNA sequencing studies (J. Lee et al. 2002), which showed that it is not in the clade of all stephanomerias.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Munzothamnus blairii
|authority=(Munz & I. M. Johnston) P. H. Raven
|rank=species
|parent rank=genus
|synonyms=Malacothrix blairii
|basionyms=Stephanomeria blairii
|family=Asteraceae
|phenology=Flowering Sep–Nov.
|habitat=Rocky canyon walls
|elevation=60–300 m
|distribution=Calif.
|reference=None
|publication title=Aliso
|publication year=1963
|special status=Illustrated;Endemic;Conservation concern
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V19_547.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Munzothamnus
|species=Munzothamnus blairii
|2n chromosome quantity=16
|apex shape=obtuse;rounded
|base shape=cuneate
|base size or width=thickened
|blade coloration=bright green
|blade length=5cm;13cm
|blade width=thin;4cm;6cm
|branch texture=fleshy
|branch thickness=0cm;1cm
|cypsela some measurement=3mm;3.5mm
|face pubescence=glabrescent;tomentose
|head quantity=20;35
|leaf arrangement=tufted;crowded
|petiole architecture=winged
|petiole base duration=persistent
|petiole some measurement=1
}}<!--

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