Porophyllum ruderale |
Porophyllum |
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Bolivian coriander, yerba porosa |
poreleaf |
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Habit | Annuals, perennials, subshrubs, or shrubs, 10–120[–200+] cm. | |||||||||||||||||
Stems | erect, usually strictly branched. |
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Leaves | cauline; opposite or alternate; petiolate or sessile; blades orbiculate to linear or filiform, margins crenate or entire, faces usually glabrous (oil-glands scattered and/or at margins). |
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Involucres | cylindric to campanulate [turbinate], 3–12 mm diam. |
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Receptacles | convex to conic, pitted, epaleate. |
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Ray florets | 0. |
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Disc florets | (5–)10–80[–100+], bisexual, fertile; corollas usually yellow, sometimes whitish to greenish or purplish [brownish], tubes either very slender, much longer than funnelform throats, or stout, much shorter than narrowly cylindric throats, lobes 5, deltate to lanceolate (often unequal). |
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Phyllaries | 5–10 in ± 2 series (distinct to bases, oblong or lanceolate to linear, bearing oval to linear oil-glands). |
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Calyculi | 0. |
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Heads | discoid, borne singly or in loose, ± corymbiform arrays. |
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Cypselae | cylindric to fusiform, hirtellous to villous [glabrous]; pappi persistent, of 25–50(–100) coarse to fine bristles in 1–2+ series. |
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x | = 12. |
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Porophyllum ruderale |
Porophyllum |
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Distribution |
AZ; NM; TX; Mexico; Central America; South America; West Indies
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sw United States; Mexico; Central America; South America; West Indies (Antilles) |
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Discussion | Varieties 2 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species ca. 25 (5 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 21, p. 234. | FNA vol. 21, p. 233. | ||||||||||||||||
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Pectidinae > Porophyllum | Asteraceae > tribe Heliantheae > subtribe Pectidinae | ||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | Kleinia ruderale | |||||||||||||||||
Name authority | (Jacquin) Cassini: in F. Cuvier, Dict. Sci. Nat. ed. 2, 43: 56. (1826) | Guettard: Hist. Acad. Roy. Sci. Mém. Math. Phys. (Paris, 4to) 1750: 377. (1754) | ||||||||||||||||
Web links |