Flora of North America species comparison

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Phemeranthus calycinus

Phemeranthus calcaricus

largeflower fameflower

limestone fameflower
Habit Plants to 4 dm; roots fleshily woody. Plants to 2.5 dm; roots tuberous, fleshy.
Stems

ascending or erect, simple or branching.

ascending to erect, sometimes branching, ± tufted.
Leaves

sessile;

blade subterete, to 7 cm.

sessile;

blade terete, to 5 cm.
Inflorescences

cymose, much overtopping leaves;

peduncle scapelike, to 25 cm.

cymose, overtopping leaves;

peduncle scapelike, to 15 cm.
Flowers

sepals persistent, ovate to suborbiculate, 4–6 mm;

petals pink- to red-purple, obovate, 10–15 mm;

stamens 25–45;

stigma 1, subcapitate, 3-lobed.

sepals persistent, ovate, 3–4 mm;

petals rose-purple, elliptic to obovate, 8–10 mm;

stamens 25–45;

stigma 1, distinctly 3-lobed.
Capsules

broadly ovoid, 6–7 mm.

ovoid to obovoid, 4–6 mm.
Seeds

without arcuate ridges, 1 mm.

without arcuate ridges, 1.2 mm.
2n

= 24, 48.

= 48.

Phemeranthus calycinus

Phemeranthus calcaricus
Phenology Flowering May–Oct. Flowering May–Sep.
Habitat Rocky or sandy soil, on or near outcrops Cedar glades in shallow soil on limestone outcrops
Elevation 100-1200 m (300-3900 ft) 100-400 m (300-1300 ft)
Distribution
from FNA
AR; CO; IL; KS; LA; MO; NE; NM; OK; TX
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; KY; TN
[BONAP county map]
Discussion

Some populations of Phemeranthus calycinus are diploid while others are tetraploid, the latter probably the result of autopolyploidy (W. H. Murdy and M. E. B. Carter 2001).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

A recent study strongly suggests that Phemeranthus calcaricus is a derivative of autotetraploid P. calycinus (W. H. Murdy and M. E. B. Carter 2001). Congruent with that hypothesis, one collection from a glade in Izard County, Arkansas (B. L. Lipscomb 1577, NCU), which is within the range of P. calycinus, appears to belong to P. calcaricus, which is known otherwise only from well east of the Mississippi River and outside the range of P. calycinus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 4, p. 492. FNA vol. 4, p. 492.
Parent taxa Portulacaceae > Phemeranthus Portulacaceae > Phemeranthus
Sibling taxa
P. aurantiacus, P. brevicaulis, P. brevifolius, P. calcaricus, P. humilis, P. longipes, P. marginatus, P. mengesii, P. parviflorus, P. rugospermus, P. sediformis, P. spinescens, P. teretifolius, P. thompsonii, P. validulus
P. aurantiacus, P. brevicaulis, P. brevifolius, P. calycinus, P. humilis, P. longipes, P. marginatus, P. mengesii, P. parviflorus, P. rugospermus, P. sediformis, P. spinescens, P. teretifolius, P. thompsonii, P. validulus
Synonyms Talinum calycinum, Claytonia calycina Talinum calcaricum
Name authority (Engelmann) Kiger: Novon 11: 320. (2001) (S. Ware) Kiger: Novon 11: 320. (2001)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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