Difference between revisions of "Pseudognaphalium luteoalbum"
Bot. J. Linn. Soc. 82: 206. 1981.
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|common_names=Red-tip rabbit-tobacco | |common_names=Red-tip rabbit-tobacco | ||
− | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Gnaphalium luteoalbum | |name=Gnaphalium luteoalbum | ||
|authority=Linnaeus | |authority=Linnaeus | ||
+ | |publication_title=Sp. Pl. | ||
+ | |publication_place=2: 851. 1753 | ||
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|publication year=1981 | |publication year=1981 | ||
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− | |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/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V19_680.xml |
|tribe=Asteraceae tribe Gnaphalieae | |tribe=Asteraceae tribe Gnaphalieae | ||
|genus=Pseudognaphalium | |genus=Pseudognaphalium |
Revision as of 19:38, 24 September 2019
Annuals, 15–40 cm; taprooted or fibrous-rooted. Stems loosely white-tomentose, not glandular. Leaf blades (crowded, internodes 1–5, sometimes to 10 mm) narrowly obovate to subspatulate, 1–3(–6) cm × 2–8 mm (distal smaller, oblanceolate to narrowly oblong or linear), bases subclasping, usually decurrent 1–2 mm, margins weakly revolute, faces mostly concolor to weakly bicolor, abaxial gray-tomentose, adaxial usually gray-tomentose, sometimes glabrescent, neither glandular. Heads in terminal glomerules (1–2 cm diam.). Involucres broadly campanulate, 3–4 mm. Phyllaries in 3–4 series, silvery gray to yellowish (hyaline), ovate to ovate-oblong, glabrous. Pistillate florets 135–160. Bisexual florets 5–10 (corollas red-tipped). Cypselae not evidently ridged (conspicuously dotted with whitish, papilliform hairs; pappus bristles loosely coherent basally, released in clusters or easily fragmented rings). 2n = 14, 16, 28.
Phenology: Flowering Apr–Oct.
Habitat: Roadsides, fields and pastures, ditches, streambanks, seasonal ponds, gardens, and other disturbed sites
Elevation: 5–2000 m
Distribution
![V19-680-distribution-map.gif](/w/images/e/ef/V19-680-distribution-map.gif)
Ariz., Ark., Calif., Fla., La., Nev., N.Mex., N.Y., Oreg., Tex., Utah, Wash., Mexico, Europe, Asia, Africa, Pacific Islands (New Zealand), Australia.
Discussion
Pseudognaphalium luteoalbum is native to Eurasia. It is similar in overall habit to P. stramineum but distinctive in its larger heads and red-tipped corollas (visible through the translucent phyllaries). Cypselae of P. luteoalbum have papilliform hairs; cypselae of other North American species of Pseudognaphalium are glabrous.
Selected References
None.