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>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://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V19_5.xml
|tribe=Asteraceae tribe Mutisieae
|genus=Acourtia
}}<!--

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