Difference between revisions of "Psacalium"
in F. Cuvier, Dict. Sci. Nat. ed. 2, 43: 461. 1826.
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|discussion=<p>Species ca. 42 (1 in the flora).</p> | |discussion=<p>Species ca. 42 (1 in the flora).</p> | ||
|tables= | |tables= | ||
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|family=Asteraceae | |family=Asteraceae | ||
|distribution=sw United States;mostly Mexico and Central America. | |distribution=sw United States;mostly Mexico and Central America. | ||
| − | |reference= | + | |reference=None |
|publication title=in F. Cuvier, Dict. Sci. Nat. ed. | |publication title=in F. Cuvier, Dict. Sci. Nat. ed. | ||
|publication year=1826 | |publication year=1826 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V20_1393.xml |
|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Psacalium | |genus=Psacalium | ||
Revision as of 19:26, 16 December 2019
Perennials, [10–]80–150[–300] cm (rhizomes usually fleshy; plants hairy or tufted-hairy to unevenly glabrate). Stems single or clustered, erect. Leaves basal and cauline (proximal largest, cauline progressively smaller distally, bractlike); alternate; petiolate (petioles well defined, attached to blades at bases [attached near centers, leaves peltate]); blades palmately or pinnately nerved (and, usually, lobed), mostly ovate to elliptic [orbiculate, polygonal], ultimate margins entire or toothed, faces glabrous or sparsely [densely] hairy. Heads discoid, in corymbiform to paniculiform arrays. Calyculi of 1–3[–5] bractlets (shorter than [equaling or longer than] phyllaries). Involucres cylindric to weakly turbinate, 1.5–4[–10+] mm diam. Phyllaries persistent, mostly 5–8[–17] in 1–2 series, erect, distinct, ovate, obovate, or oblong, subequal, margins scarious (tips greenish or gray to whitish, not black). Receptacles flat, foveolate (sometimes hairy), epaleate. Ray florets 0. Disc florets 5–8[–80], bisexual, fertile; corollas white or ochroleucous [yellow, purplish], tubes longer than the campanulate or ± lacking throats, lobes 5, ascending to spreading, lance-linear; style branches: stigmatic areas continuous, apices rounded-truncate. Cypselae mostly ± ellipsoid, ± compressed, [10–]14–18-ribbed, glabrous or hairy; pappi [0] persistent (fragile), of 100–120, white or creamy, barbellulate bristles. x = 30.
Distribution
sw United States, mostly Mexico and Central America.
Discussion
Species ca. 42 (1 in the flora).
Selected References
None.