View source for Acourtia

{{Treatment/ID
|accepted_name=Acourtia
|accepted_authority=D. Don
|publications={{Treatment/Publication
|title=Trans. Linn. Soc. London
|place=16: 203. 1830
|year=1830
}}
|common_names=Desertpeony
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Mutisieae;Acourtia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Mutisieae]]</div><div class="higher-taxon"><small>genus</small>[[Acourtia]]</div></div>
|etymology=For Mrs. A’Court, a British amateur botanist
|volume=Volume 19
|mention_page=page 12, 14, 57, 70, 71, 73
|treatment_page=page 72
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism atypical some measurement;whole-organism atypical some measurement;whole-organism some measurement;whole-organism duration"><b>Perennials,</b> (2.5–) 5–50 (–150+) cm (caudices brown-woolly, aerial stems glabrate or resinous-punctate).</span> <span class="statement" id="st-d0_s1" data-properties=""><b>Leaves </b>basal, cauline, or both;</span> <span class="statement" id="st-d0_s2" data-properties="leaf position;leaf position;leaf architecture;leaf architecture">shortly petiolate or sessile;</span> <span class="statement" id="st-d0_s3" data-properties="blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;base shape;base architecture or fixation;margin shape;margin shape;margin shape;margin architecture or shape;margin architecture or shape;margin architecture or shape;margin architecture or shape;face pubescence;face pubescence">blades elliptic-oblong, lanceolate, oblong, oblong-lanceolate, oblong-oblanceolate, orbiculate, ovate, ovate-elliptic, or rhombic-orbiculate (thin and chartaceous to thick and coriaceous), bases cuneate to cordate or clasping, margins entire or lobed or pinnately parted, dentate, or serrate, faces usually minutely stipitate-glandular and/or hirtellous.</span> <span class="statement" id="st-d0_s4" data-properties="head architecture or arrangement;head arrangement;head arrangement;array architecture;array architecture"><b>Heads </b>quasi-radiate [discoid] (see florets), borne singly or in paniculiform or corymbiform arrays.</span> <span class="statement" id="st-d0_s5" data-properties="involucre shape;involucre some measurement"><b>Involucres </b>turbinate or obconic to campanulate, 6–17+ mm.</span> <span class="statement" id="st-d0_s6" data-properties="phyllary shape;phyllary size;series quantity;apex shape;apex shape;apex shape"><b>Phyllaries </b>in 1–7 series, lanceolate to oblanceolate or linear, unequal (rigid, margins scarious), apices obtuse to acute, acuminate, or mucronate.</span> <span class="statement" id="st-d0_s7" data-properties="receptacle shape;receptacle shape;receptacle shape;receptacle shape;receptacle shape;receptacle relief;receptacle relief;receptacle relief;receptacle relief;receptacle relief;receptacle pubescence;receptacle architecture"><b>Receptacles </b>concave, flat, or convex, usually foveolate, alveolate, or reticulate, pubescent, sometimes paleate (paleae apically pubescent).</span> <span class="statement" id="st-d0_s8" data-properties="floret atypical quantity;floret quantity;floret reproduction;floret reproduction"><b>Florets </b>3–25 (–80), bisexual, fertile;</span> <span class="statement" id="st-d0_s9" data-properties="corolla coloration;corolla architecture">corollas pink to lavender or white [yellow], zygomorphic (2-lipped; outer lip liguliform, 3-toothed, inner usually smaller, 2-lobed, lobes often curled);</span> <span class="statement" id="st-d0_s10" data-properties="basal appendage architecture or shape;basal appendage shape;basal appendage shape;apical appendage shape">anther basal appendages entire, elongate, rounded, apical appendages lanceolate;</span> <span class="statement" id="st-d0_s11" data-properties="style-branch height or length or size;apex shape">style-branches relatively short, apices blunt-penicillate (abaxial faces usually glabrous, i.e., without collecting hairs).</span> <span class="statement" id="st-d0_s12" data-properties="cypsela shape;cypsela some measurement;cypsela architecture or shape;cypsela architecture or shape;face pubescence;face pubescence"><b>Cypselae </b>± fusiform or terete to cylindric, 4–10 mm, not beaked, usually ± ribbed, faces glabrous or stipitate-glandular;</span> <span class="statement" id="st-d0_s13" data-properties="bristle atypical quantity;bristle quantity;bristle coloration;bristle coloration;bristle architecture;series atypical quantity;series quantity">pappi of 40–60 (–80+) tan or white, ± barbellate to nearly smooth bristles in 1–3 (–9) series.</span> <span class="statement" id="st-d0_s14" data-properties="x chromosome quantity">x = 27.</span><!--

-->{{Treatment/Body
|distribution=Warm regions of North America;Mexico;Central America
|discussion=<p>Species ca. 41 (5 in the flora).</p><!--
--><p>Acourtia consists of two clades, one with species that have scapiform stems and the other with species that have leafy flowering stems. From about 1873 to 1973, Acourtia species were treated as members of Perezia, usually as Perezia sect. Acourtia (D. Don) A. Gray. J. L. Reveal and R. M. King (1973) reestablished Acourtia for the leafy-stemmed North American species, and B. L. Turner (1978) added the scapiform species. Molecular evidence (H. G. Kim et al. 2002) indicated Acourtia is most closely related to Proustia and Trixis and not to Perezia.</p>
|tables=
|references={{Treatment/Reference
|id=bacigalupi1931a
|text=Bacigalupi, R. 1931. A monograph of the genus Perezia, section Acourtia, with a provisional key to the section Euperezia. Contr. Gray Herb. 97: 1–81.
}}{{Treatment/Reference
|id=r1992a
|text=Cabrera R., L. 1992. Systematics of Rzedowskiela Gen. Nov. (Asteraceae: Mutisieae: Nassauviinae). Ph.D. dissertation. University of Texas.
}}{{Treatment/Reference
|id=r2001a
|text=Cabrera R., L. 2001. Six new species of Acourtia (Asteraceae) and a historical account of Acourtia mexicana. Brittonia 53: 416–429.
}}{{Treatment/Reference
|id=reveal1973b
|text=Reveal, J. L. and R. M. King. 1973. Re-establishment of Acourtia D. Don (Asteraceae). Phytologia 27: 228–232.
}}{{Treatment/Reference
|id=turner1978a
|text=Turner, B. L. 1978. Taxonomic study of the scapiform species of Acourtia (Asteraceae–Mexico). Phytologia 38: 456–468.
}}{{Treatment/Reference
|id=turner1993b
|text=Turner, B. L. 1993c. New taxa, new combinations, and nomenclatural comments on the genus Acourtia (Asteraceae: Mutisieae). Phytologia 74: 385–412.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves basal (blades pinnately lobed); heads borne singly (or 2–3, on scapiform peduncles).
|[[Acourtia runcinata|Acourtia runcinata]]
|-id=key-0-1
|1
|Leaves cauline (blades not pinnately lobed); heads borne singly (at tips of branches) or in corymbiform or paniculiform arrays
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Plants 2.5–30 cm; leaf blades rhombic-orbiculate to suborbiculate (hollylike, lengths about equaling widths)
|[[Acourtia nana|Acourtia nana]]
|-id=key-0-2
|2
|Plants 30–150 cm; leaf blades elliptic, elliptic-oblong, lance-oblong, oblong-lanceolate, oblong-ovate, oval, ovate, or ovate-elliptic (not hollylike, lengths mostly greater than widths)
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Leaf blades oval to ovate-elliptic; phyllaries acuminate; florets 3–6
|[[Acourtia thurberi|Acourtia thurberi]]
|-id=key-0-3
|3
|Leaf blades elliptic, elliptic-oblong, oblong-lanceolate, or oblong-ovate; phyllaries obtuse to acute or mucronate; florets 8–20
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Leaf margins dentate to denticulate; phyllary apices obtuse to shortly acute; florets 8–12
|[[Acourtia wrightii|Acourtia wrightii]]
|-id=key-0-4
|4
|Leaf margins spinulose-denticulate; phyllary apices acute to acuminate or mucronate; florets 10–20
|[[Acourtia microcephala|Acourtia microcephala]]
|}
</div></div><!--

-->{{#Taxon:
name=Acourtia
|author=Beryl B. Simpson
|authority=D. Don
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=Warm regions of North America;Mexico;Central America
|reference=bacigalupi1931a;r1992a;r2001a;reveal1973b;turner1978a;turner1993b
|publication title=Trans. Linn. Soc. London
|publication year=1830
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V19_5.xml
|tribe=Asteraceae tribe Mutisieae
|genus=Acourtia
|apex shape=blunt-penicillate;obtuse;acute acuminate or mucronate
|apical appendage shape=lanceolate
|array architecture=corymbiform;paniculiform
|basal appendage architecture or shape=entire
|basal appendage shape=rounded;elongate
|base architecture or fixation=clasping
|base shape=cuneate;cordate
|blade shape=rhombic-orbiculate;ovate-elliptic;rhombic-orbiculate;ovate-elliptic;ovate;orbiculate;oblong-oblanceolate;oblong-lanceolate;oblong;lanceolate;elliptic-oblong
|bristle architecture=less barbellate;nearly smooth
|bristle atypical quantity=60;80
|bristle coloration=white;tan
|bristle quantity=40;60
|corolla architecture=zygomorphic
|corolla coloration=pink;lavender or white
|cypsela architecture or shape=ribbed;not beaked
|cypsela shape=less fusiform or terete;cylindric
|cypsela some measurement=4mm;10mm
|face pubescence=stipitate-glandular;glabrous;hirtellous;stipitate-glandular
|floret atypical quantity=25;80
|floret quantity=3;25
|floret reproduction=fertile;bisexual
|head architecture or arrangement=quasi-radiate
|head arrangement=in paniculiform or corymbiform arrays;singly
|involucre shape=obconic;campanulate
|involucre some measurement=6mm;17mm
|leaf architecture=sessile;petiolate
|leaf position=cauline;basal
|margin architecture or shape=serrate;dentate;serrate;dentate
|margin shape=parted;lobed;entire
|phyllary shape=lanceolate;oblanceolate or linear
|phyllary size=unequal
|receptacle architecture=paleate
|receptacle pubescence=pubescent
|receptacle relief=reticulate;alveolate;reticulate;alveolate;foveolate
|receptacle shape=convex;flat;convex;flat;concave
|series atypical quantity=3;9
|series quantity=1;3
|style-branch height or length or size=short
|whole-organism atypical some measurement=50cm;150cm
|whole-organism duration=perennial
|whole-organism some measurement=5cm;50cm
|x chromosome quantity=27
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae tribe Mutisieae]]