Polypremum

Linnaeus

Sp. Pl. 1: 111. 1753.

Etymology: Greek polys, many, and premnon, stump or stem, alluding to diffuse much-branched habit
Treatment appears in FNA Volume 17. Treatment on page 9. Mentioned on page 8.
Revision as of 18:02, 29 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
 TaxonIllustrator 
FNA17 P01 Polypremum procumbens.jpegPolypremum procumbens
Angelonia gardneri
Antirrhinum majus
Barbara Alongi
Barbara Alongi
Barbara Alongi

Perennials or annuals, taprooted. Stems glabrous or sparsely scabrous along ridges. Cymes: bracts absent. Pedicels absent; bracteoles present. Flowers: calyx urceolate, lobes lanceolate; corolla white; stamens: filaments glabrous; stigma capitate. Seeds: wings absent. x = 10, 11.

Distribution

c, se United States, Mexico, West Indies, Central America, South America, in Pacific Islands, Australia

Discussion

Species 1.

Polypremum is sometimes confused with Loeflingia and Scleranthus of the Caryophyllaceae; the opposite, linear-acuminate leaves and axillary flowers are suggestive of those taxa. The relatively small, but conspicuous, white petals (absent or at most rudimentary in Loeflingia and Scleranthus) and the two-lobed capsule (three-valved capsule in Loeflingia, utricle in Scleranthus) distinguish Polypremum.

Selected References

None.

... more about "Polypremum"
Richard K. Rabeler +
Linnaeus +
not leathery +  and not fleshy +
urceolate +
monochasial +
c +, se United States +, Mexico +, West Indies +, Central America +, South America +, in Pacific Islands +  and Australia +
Greek polys, many, and premnon, stump or stem, alluding to diffuse much-branched habit +
axillary +  and terminal +
lanceolate +
serrate +  and entire +
tenuinucellate +  and unitegmic +
amphitropous +  and anatropous +
angled;angled-globular +
5 +  and 4 +
prostrate;ascending +
scabrous +  and glabrous +
Polypremum +
Tetrachondraceae +
annual +  and perennial +
annual +  and perennial +