Flora of North America species comparison

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Phemeranthus rugospermus

Phemeranthus marginatus

prairie fameflower, rough-seed fameflower
Habit Plants to 2.5 dm; roots elongate, fleshily woody. Plants to 0.5 dm; roots tuberous.
Stems

± erect, simple or sometimes branching.

± erect, simple.
Leaves

sessile;

blade terete, to 6 cm.

sessile but strongly contracted at or below middle and appearing petiolate;

blade proximally subterete, distally flattened and oblong-spatulate, to 4 cm.
Inflorescences

cymose, much overtopping leaves;

peduncle scapelike, to 15 cm.

cymose, slightly overtopped by to usually overtopping leaves;

peduncle scapelike, to 2.5 cm.
Flowers

sepals deciduous, ovate, 4 mm;

petals pink to magenta, ovate to obovate, sometimes mucronulate, 6.5–8 mm;

stamens 12–28;

stigmas 3, spreading widely, linear, 1/2–1/3 as long as styles.

sepals deciduous, broadly lanceolate to ovate, 2–3 mm;

petals yellow, obovate, 3–5 mm;

stamens 5;

stigma 1, subcapitate.
Capsules

subglobose, 4 mm.

ellipsoid, 3 mm.
Seeds

without arcuate ridges, 1.2 mm, corrugate-rugulose overall.

with arcuate ridges, 1 mm.
2n

= 24.

Phemeranthus rugospermus

Phemeranthus marginatus
Phenology Flowering May–Aug. Flowering Jul–Aug.
Habitat Sand or sandy soils, dunes, mounds, flats, banks, ridges, edges of igneous or metamorphic rock outcrops, along or near watercourses Dry, rocky slopes, ridges, and ledges
Elevation 0-500 m (0-1600 ft) 1900-2200 m (6200-7200 ft)
Distribution
from FNA
IA; IL; IN; KS; LA; MN; NE; TX; WI
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; n Mexico
Discussion

Within the overall area of its distribution, Phemeranthus rugospermus is nowhere abundant, its occurrence being everywhere spotty and localized. According to T. S. Cochrane (1993), the disjunctions probably reflect a history of long-distance dispersal from a center in the partially unglaciated Kansas and Nebraska sandhills, the present-day gaps resulting from a paucity of suitable habitats between that area and the others where it is now found. Even so, its discovery in Missouri, Arkansas, and/or Oklahoma would not be surprising.

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

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 4, p. 494. FNA vol. 4, p. 493.
Parent taxa Portulacaceae > Phemeranthus Portulacaceae > Phemeranthus
Sibling taxa
P. aurantiacus, P. brevicaulis, P. brevifolius, P. calcaricus, P. calycinus, P. humilis, P. longipes, P. marginatus, P. mengesii, P. parviflorus, P. sediformis, P. spinescens, P. teretifolius, P. thompsonii, P. validulus
P. aurantiacus, P. brevicaulis, P. brevifolius, P. calcaricus, P. calycinus, P. humilis, P. longipes, P. mengesii, P. parviflorus, P. rugospermus, P. sediformis, P. spinescens, P. teretifolius, P. thompsonii, P. validulus
Synonyms Talinum rugospermum Talinum marginatum
Name authority (Holzinger) Kiger: Novon 11: 320. (2001) (Greene) 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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