Flora of North America species comparison

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Porophyllum scoparium

Porophyllum greggii

shrubby poreleaf, trans-Pecos poreleaf

Gregg's poreleaf
Habit Subshrubs or shrubs, 20–60+ cm; internodes mostly 10–30 mm. Perennials, 15–30 cm; internodes mostly 10–20+ mm.
Leaf

blades mostly filiform, 10–40 × 1–2 mm.

blades mostly filiform, 20–60 × 1–2 mm.
Florets

mostly 40–80+;

corollas yellow, 5–8 mm.

mostly 50–80+;

corollas yellow, 7.5–12 mm.
Phyllaries

7–10, oblanceolate to linear, 6–10 mm.

5, ovate to oblong or elliptic, 9–12 mm.
Cypselae

3.5–5.5 mm;

pappi: longer bristles 6–7.5 mm.

7–8 mm;

pappi: longer bristles 8–10 mm.
2n

= 24.

= 72.

Porophyllum scoparium

Porophyllum greggii
Phenology Flowering spring–fall. Flowering spring–fall.
Habitat Sandy, gravelly, and rocky sites, calcareous or igneous soils, with desert scrub Open, rocky sites, grasslands and desert scrub
Elevation 500–1400 m (1600–4600 ft) 1200–2000 m (3900–6600 ft)
Distribution
from FNA
NM; TX; Mexico (Chihuahua, Coahuila, Nuevo León)
[WildflowerSearch map]
[BONAP county map]
from FNA
TX
[BONAP county map]
Source FNA vol. 21, p. 234. FNA vol. 21, p. 234.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Pectidinae > Porophyllum Asteraceae > tribe Heliantheae > subtribe Pectidinae > Porophyllum
Sibling taxa
P. gracile, P. greggii, P. pygmaeum, P. ruderale
P. gracile, P. pygmaeum, P. ruderale, P. scoparium
Name authority A. Gray: Smithsonian Contr. Knowl. 3(5): 119. (1852) A. Gray: Smithsonian Contr. Knowl. 3(5): 120. (1852)
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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