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Bolivian coriander, yerba porosa

odora, slender poreleaf

Habit Subshrubs or shrubs, 20–70 cm; internodes mostly 10–30 mm.
Leaf

blades linear to filiform, 20–50 × 1–5 mm.

Florets

(5–)12–30;

corollas whitish to purplish, 6–9 mm.

Phyllaries

5, oblong to linear, 9–15 mm.

Cypselae

6–10 mm;

pappi: longer bristles 7–9 mm.

2n

= 48.

Porophyllum ruderale

Porophyllum gracile

Phenology Flowering late winter–early summer; fall.
Habitat Sandy, gravelly, and rocky sites (usually granitic) with desert scrub
Elevation 200–2100 m (700–6900 ft)
Distribution
from FNA
AZ; NM; TX; Mexico; Central America; South America; West Indies
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from FNA
AZ; CA; NM; TX; Mexico (Baja California, Sonora)
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Discussion

Varieties 2 (1 in the flora).

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

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. scoparium
P. greggii, P. pygmaeum, P. ruderale, P. scoparium
Subordinate taxa
P. ruderale var. macrocephalum
Synonyms Kleinia ruderale
Name authority (Jacquin) Cassini: in F. Cuvier, Dict. Sci. Nat. ed. 2, 43: 56. (1826) Bentham: Bot. Voy. Sulphur, 29. (1844)
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