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-undefined" data-properties=""><b>Perennials,</b> (2.5–)5–50(–150+) cm (caudices brown-woolly, aerial stems glabrate or resinous-punctate). <b>Leaves</b> basal, cauline, or both; shortly petiolate or sessile; 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. <b>Heads</b> quasi-radiate [discoid] (see florets), borne singly or in paniculiform or corymbiform arrays. <b>Involucres</b> turbinate or obconic to campanulate, 6–17+ mm. <b>Phyllaries</b> in 1–7 series, lanceolate to oblanceolate or linear, unequal (rigid, margins scarious), apices obtuse to acute, acuminate, or mucronate. <b>Receptacles</b> concave, flat, or convex, usually foveolate, alveolate, or reticulate, pubescent, sometimes paleate (paleae apically pubescent). <b>Florets</b> 3–25(–80), bisexual, fertile; corollas pink to lavender or white [yellow], zygomorphic (2-lipped; outer lip liguliform, 3-toothed, inner usually smaller, 2-lobed, lobes often curled); anther basal appendages entire, elongate, rounded, apical appendages lanceolate; style branches relatively short, apices blunt-penicillate (abaxial faces usually glabrous, i.e., without collecting hairs). <b>Cypselae</b> ± fusiform or terete to cylindric, 4–10 mm, not beaked, usually ± ribbed, faces glabrous or stipitate-glandular; pappi of 40–60(–80+) tan or white, ± barbellate to nearly smooth bristles in 1–3(–9) series. <b>x</b> = 27.</span><!--

-->{{Treatment/Body
|distribution=Warm regions of North America;Mexico;Central America.
|discussion=<p>Species ca. 41 (5 in the flora).</p><!--
--><p><i>Acourtia</i> 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, <i>Acourtia</i> species were treated as members of Perezia, usually as Perezia sect. <i>Acourtia</i> (D. Don) A. Gray. J. L. Reveal and R. M. King (1973) reestablished <i>Acourtia</i> 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 <i>Acourtia</i> is most closely related to Proustia and <i>Trixis</i> 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://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_5.xml
|tribe=Asteraceae tribe Mutisieae
|genus=Acourtia
}}<!--

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