Phemeranthus rugospermus |
Phemeranthus brevicaulis |
|
---|---|---|
prairie fameflower, rough-seed fameflower |
dwarf fameflower |
|
Habit | Plants to 2.5 dm; roots elongate, fleshily woody. | Plants to 1 dm; roots fusiform, fleshily woody. |
Stems | ± erect, simple or sometimes branching. |
spreading-ascending, branching, sometimes suffrutescent. |
Leaves | sessile; blade terete, to 6 cm. |
sessile; blade to 2.5 cm, distal terete or subterete, proximal flatter, broader, somewhat shorter. |
Inflorescences | cymose, much overtopping leaves; peduncle scapelike, to 15 cm. |
cymulose or 1-flowered, slightly to distinctly overtopping leaves; peduncle not scapelike, to 1.5 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 persistent, ovate to elliptic-lanceolate, to 8 mm; petals light rose to purplish red, obovate, to 16 mm; stamens usually 20; stigma 1, subcapitate. |
Capsules | subglobose, 4 mm. |
ellipsoid, 4–6 mm. |
Seeds | without arcuate ridges, 1.2 mm, corrugate-rugulose overall. |
without arcuate ridges, 1 mm. |
2n | = 24. |
= 24. |
Phemeranthus rugospermus |
Phemeranthus brevicaulis |
|
Phenology | Flowering May–Aug. | Flowering Apr–Sep. |
Habitat | Sand or sandy soils, dunes, mounds, flats, banks, ridges, edges of igneous or metamorphic rock outcrops, along or near watercourses | Dry woodlands on rocky slopes, ridges, and crests, in limestone and igneous soils |
Elevation | 0-500 m (0-1600 ft) | 1600-3000 m (5200-9800 ft) |
Distribution |
IA; IL; IN; KS; LA; MN; NE; TX; WI
|
AZ; NM; TX; n Mexico (Chihuahua, Coahuila)
|
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.) |
Within the flora area Phemeranthus brevicaulis has been known most generally as Talinum pulchellum, which was based on a collection from Queen, New Mexico. However, P. brevicaule, which was described earlier (as T. brevicaule) from the Santa Eulalia Mountains in Chihuahua, Mexico, differs in no significant respect, and that epithet has priority when the two entities are merged. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 4, p. 494. | FNA vol. 4, p. 491. |
Parent taxa | Portulacaceae > Phemeranthus | Portulacaceae > Phemeranthus |
Sibling taxa | ||
Synonyms | Talinum rugospermum | Talinum brevicaule, Talinum eximium, Talinum pulchellum, Talinum youngiae |
Name authority | (Holzinger) Kiger: Novon 11: 320. (2001) | (S. Watson) Kiger: Novon 11: 319. (2001) |
Web links |