View source for Micropus amphibolus

{{Treatment/ID
|accepted_name=Micropus amphibolus
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=17: 214. 1882
|year=1882
}}
|common_names=Mount Diablo cottonseed
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Stylocline amphibola
|authority=(A. Gray) J. T. Howell
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Gnaphalieae;Micropus;Micropus amphibolus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Gnaphalieae]]</div><div class="higher-taxon"><small>genus</small>[[Micropus]]</div><div class="higher-taxon"><small>species</small>[[Micropus amphibolus]]</div></div>
|volume=Volume 19
|mention_page=page 454, 456
|treatment_page=page 455
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism some measurement;whole_organism growth form"><b>Plants </b>2–20 cm.</span> <span class="statement" id="st-d0_s1" data-properties="head shape;head diameter"><b>Heads </b>± spheric, 3.5–5 mm diam.</span> <span class="statement" id="st-d0_s2" data-properties="receptacle shape;receptacle some measurement;receptacle height"><b>Receptacles </b>obovoid, mostly 0.7–1 mm, heights 1.2–1.8 times diams.</span> <span class="statement" id="st-d0_s3" data-properties="palea architecture;palea quantity;palea length;palea some measurement;series quantity"><b>Pistillate </b>paleae 8–12 in 2 series, longest 2–3 mm;</span> <span class="statement" id="st-d0_s4" data-properties="wing prominence;wing life cycle;wing position;wing orientation;wing shape;wing shape">wings prominent, not withering, subapical, inflexed, ± obovate, plane to concave;</span> <span class="statement" id="st-d0_s5" data-properties="body shape;body pubescence or texture;body pubescence or texture;body pubescence">bodies somewhat galeate, mainly chartaceous, cartilaginous medially, ± lanuginose.</span> <span class="statement" id="st-d0_s6" data-properties="palea architecture;palea quantity"><b>Staminate </b>paleae mostly 1–3.</span> <span class="statement" id="st-d0_s7" data-properties="corolla architecture;corolla some measurement;lobe atypical quantity;lobe quantity"><b>Staminate </b>corollas 1.2–1.9 mm, lobes 4 (–5).</span> <span class="statement" id="st-d0_s8" data-properties="cypsela some measurement"><b>Cypselae </b>1–1.5 mm, corolla scars in distal 1/4;</span> <span class="statement" id="st-d0_s9" data-properties="pappus architecture;bristle quantity;bristle architecture;bristle some measurement">pappi: staminate of 1–5, ± barbellulate bristles 1.7–2 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering and fruiting late Mar–Jun.
|habitat=Slopes, ridges, on and near rock outcrops, shallow gravelly soils derived from shale, mudstone, sandstone, volcanic rocks (not recorded on serpentine), edges of or in clearings, grasslands, chaparral, woodlands
|elevation=40–900 m
|distribution=Calif.
|discussion=<p>Micropus amphibolus is relatively uncommon; it is known from mountains and hills of the San Francisco Bay area and northern Coast Ranges, plus populations in outer southern Coast Ranges and in foothills of the northern Sierra Nevada. It is superficially similar to and often confused with M. californicus (see discussion there). Relatively few recent collections of M. amphibolus are known, raising significant conservation concerns.</p><!--
--><p>Though consistently distinct, Micropus amphibolus combines some character states of Stylocline and Micropus (J. T. Howell 1948), suggesting that it may have descended from a hybrid between, or common ancestor of, the two genera. The best available morphologic evidence consistently places it basal within Micropus, with which it shares a majority of character states (J. D. Morefield 1992).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Micropus amphibolus
|authority=A. Gray
|rank=species
|parent rank=genus
|synonyms=Stylocline amphibola
|basionyms=
|family=Asteraceae
|phenology=Flowering and fruiting late Mar–Jun.
|habitat=Slopes, ridges, on and near rock outcrops, shallow gravelly soils derived from shale, mudstone, sandstone, volcanic rocks (not recorded on serpentine), edges of or in clearings, grasslands, chaparral, woodlands
|elevation=40–900 m
|distribution=Calif.
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1882
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V19_754.xml
|tribe=Asteraceae tribe Gnaphalieae
|genus=Micropus
|species=Micropus amphibolus
|body pubescence=lanuginose
|body pubescence or texture=cartilaginous;chartaceous
|body shape=galeate
|bristle architecture=barbellulate
|bristle quantity=1;5
|bristle some measurement=1.7mm;2mm
|corolla architecture=staminate
|corolla some measurement=1.2mm;1.9mm
|cypsela some measurement=1mm;1.5mm
|head diameter=3.5mm;5mm
|head shape=spheric
|lobe atypical quantity=4;5
|lobe quantity=4
|palea architecture=staminate;pistillate
|palea length=longest
|palea quantity=1;3
|palea some measurement=2mm;3mm
|pappus architecture=staminate
|receptacle height=1.2-1.8 times diams
|receptacle shape=obovoid
|receptacle some measurement=0.7mm;1mm
|series quantity=2
|whole_organism growth form=plant
|whole_organism some measurement=2cm;20cm
|wing life cycle=not withering
|wing orientation=inflexed
|wing position=subapical
|wing prominence=prominent
|wing shape=plane;concave
}}<!--

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