View source for Pectis longipes

{{Treatment/ID
|accepted_name=Pectis longipes
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Smithsonian Contr. Knowl.
|place=5(6): 69. 1853
|year=1853
}}
|common_names=Longstalk chinchweed
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Pectidinae;Pectis;Pectis longipes
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Pectidinae]]</div><div class="higher-taxon"><small>genus</small>[[Pectis]]</div><div class="higher-taxon"><small>species</small>[[Pectis longipes]]</div></div>
|volume=Volume 21
|mention_page=page 224
|treatment_page=page 226
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 8–25 cm (rhizomes branched, 1–10 mm diam.); herbage lemon-scented or spicy-scented. <b>Stems</b> ascending to erect (very leafy), glabrous. <b>Leaves</b> linear to linear-oblanceolate, 10–55 × 1–3 mm, margins with 1–4 pairs of setae, faces glabrous (conspicuously dotted on margins with round oil-glands 0.3–0.5 mm). <b>Heads</b> borne singly. <b>Peduncles</b> (30–)50–160 mm. <b>Involucres</b> campanulate. <b>Phyllaries</b> distinct, linear, linear-oblanceolate, or linear-elliptic, 5–8 × 0.7–2 mm (dotted with 1–3, swollen, subterminal oil-glands 0.3–0.4 mm plus 1–3 pairs of narrow, submarginal oil-glands). <b>Ray</b> florets (8–)13(–15); corollas 8–12 mm. <b>Disc</b> florets 25–50; corollas 4–6 mm (2-lipped). <b>Cypselae</b> 2.5–4.5 mm, strigillose (hairs tips acute or blunt); ray pappi of 1–2 awns 3–3.5 mm; disc pappi of 2–30 unequal bristles 3–5 mm. <b>2n</b> = 24, 48.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–Nov.
|habitat=Grasslands, oak-juniper-mesquite woodlands
|elevation=900–1700 m
|distribution=Ariz.;N.Mex.;Mexico (Chihuahua;Durango;Sonora).
|discussion=<p><i>Pectis longipes</i> has been listed from Texas in floras; I have seen no collections from that state.</p><!--
--><p><i>Pectis longipes</i> comprises two cytological races. Diploid, spicy-scented plants occur throughout the range. In southern Arizona, the diploid race is broadly sympatric but locally allopatric with a tetraploid, lemon-scented race. The tetraploid race is nested within the range of the diploids. The races are easily separable by odor, and although they are very similar morphologically, they can be separated also by statistically significant differences in floral dimensions and pollen size (M. A. Luckow 1983). Based upon those minute differences, the type collection is diploid. Because the races are so similar morphologically and because so many of the specimens of <i>P. longipes</i> in herbaria bear no indication of odor, I chose not to give the cytological races formal recognition.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Pectis longipes
|author=
|authority=A. Gray
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering Apr–Nov.
|habitat=Grasslands, oak-juniper-mesquite woodlands
|elevation=900–1700 m
|distribution=Ariz.;N.Mex.;Mexico (Chihuahua;Durango;Sonora).
|reference=None
|publication title=Smithsonian Contr. Knowl.
|publication year=1853
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_546.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Pectidinae
|genus=Pectis
|species=Pectis longipes
}}<!--

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