Difference between revisions of "Portulaca rubricaulis"

Kunth in A. von Humboldt et al.

in A. von Humboldt et al., Nov. Gen. Sp. 6: 73. 1823.

Synonyms: Portulaca phaeosperma Urban
Treatment appears in FNA Volume 4. Treatment on page 500. Mentioned on page 496, 497, 499.
FNA>Volume Importer
(No difference)

Revision as of 20:30, 26 July 2019

Plants annual; roots fleshy. Stems erect or suberect, fleshy, succulent; trichomes inconspicuous at nodes and in inflorescence; branches 5–35 cm. Leaf-blades linear to lanceolate, terete to hemispheric, 5–15 × 1–3 (–5) mm, apex acute; involucrelike leaves (3–) 5–8. Flowers 9–15 mm diam.; petals yellow, obovate to oval-obovate, 5–8 × 2–5 mm, apex rounded; stamens 12–30; stigmas 5–7. Capsules subglobose, 3.3–5.5 mm diam. Seeds brownish red, dark-brown, or rarely black, orbiculate or elongate, flattened, 0.6–0.65 mm; surface cells slightly raised, obscurely stellate, sometimes granular, tubercles absent. 2n = 16.


Habitat: Coastal beaches and shell mounds
Elevation: 0 m

Distribution

V4 1017-distribution-map.gif

Fla., West Indies, South America.

Discussion

Portulaca rubricaulis traditionally has been treated as P. phaeosperma (J. K. Small 1933). C. D. Legrand (1962) and R. P. Wunderlin (1982) consider the types of P. phaeosperma and P. rubricaulis to be conspecific. Only the yellow-flowered form has been seen in the United States; Legrand reported a salmon or orange-red to red form from the Caribbean.

Selected References

None.

Lower Taxa

None.