Bahiopsis reticulata |
Asteraceae tribe Heliantheae subtribe Helianthinae |
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Death Valley goldeneye, net vein viguiera, netvein goldeneye |
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Habit | Shrubs, 50–150 cm. | Annuals, perennials, subshrubs, or shrubs, (2–)20–500 cm. | ||||||||||||||||||||||||||||||||||||
Leaves | alternate or opposite; petioles 3.5–30 mm; blades broadly ovate, 2.8–9 × 2.3–6.5 cm, margins entire, faces: abaxial sericeous and gland-dotted (and strongly reticulate, not shiny), adaxial sericeous (hair bases slightly enlarged). |
usually mostly cauline, rarely mostly basal; mostly opposite (distal often alternate) or mostly alternate, rarely whorled; petiolate or sessile; blades (often 3- or 5-nerved) orbiculate or deltate to lanceolate or linear (and intermediate shapes), sometimes lobed, ultimate margins entire or toothed, faces usually hairy (often hispid to scabrellous), often gland-dotted. |
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Peduncles | 0.5–5 cm. |
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Involucres | campanulate to hemispheric, 10–15 × 6–9 mm. |
cylindric to hemispheric or rotate. |
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Receptacles | usually flat or convex, sometimes hemispheric or conic, usually paleate (epaleate in Lagascea; paleae usually falling, sometimes persistent, mostly oblong to linear, often conduplicate, herbaceous to scarious, apices sometimes ± 3-lobed or -toothed; becoming hardened perigynia completely investing cypselae in Sclerocarpus). |
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Ray florets | 8–15; laminae 7–15 mm. |
0 or 5–30(–100+), neuter, or styliferous and sterile; corollas usually yellow to orange, sometimes partly or wholly brown to purple or red-brown to reddish. |
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Disc florets | 40+; corollas 3–5.5 mm. |
1 (Lagascea) or 10–200(–1000+), bisexual, fertile; corollas usually yellow to orange, sometimes brown to purple or reddish to red-brown, tubes shorter than or about equaling cylindric or funnelform throats, lobes 5, ± deltate (equal); anther thecae dark or pale; stigmatic papillae usually continuous. |
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Phyllaries | 18–25, 2.5–5 × 1.2–2 mm. |
persistent, 4–45(–100+) in 1–6+ series (usually distinct, ± connate in Lagascea, broadly ovate to linear, subequal or unequal). |
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Calyculi | 0. |
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Heads | 3–9(–25). |
usually radiate, sometimes discoid, borne singly or in corymbiform (paniculiform or racemiform) arrays (glomerules or second-order heads of 1–2-flowered heads in Lagascea). |
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Cypselae | 2.5–4 mm; pappi of 2 lacerate, aristate scales 1.5–2.8 mm and 2–6 lacerate scales 0.6–1 mm. |
often ± compressed, flattened, biconvex, clavate, columnar, obovoid, obpyramidal, or prismatic (lengths usually 1–2 times diams.), glabrous or hairy (faces and/or angles); pappi 0, or (often readily falling or fragile, sometimes persistent) usually of (1–)2(–8+) (sometimes aristate) scales and/or awns, sometimes coroniform. |
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Paleae | oblanceolate, 4–8 mm. |
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2n | = 36. |
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Bahiopsis reticulata |
Asteraceae tribe Heliantheae subtribe Helianthinae |
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Phenology | Flowering Mar–Jun. | |||||||||||||||||||||||||||||||||||||
Habitat | Xeric scrub, desert grottoes and canyons | |||||||||||||||||||||||||||||||||||||
Elevation | 600–1400 m (2000–4600 ft) | |||||||||||||||||||||||||||||||||||||
Distribution |
CA; NV
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Mostly subtropical; tropical; and warm-temperate New World |
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Discussion | Genera 17, species 363 (8 genera, 69 species, including 1 hybrid, in the flora). Circumscription of Helianthinae adopted here (i.e., that of H. Robinson 1981) is narrower than traditional circumscriptions (e.g., T. F. Stuessy 1977[1978]), which included genera here treated in Ecliptinae, Galinsoginae, and Rudbeckiinae. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 21, p. 176. | FNA vol. 21, p. 135. | ||||||||||||||||||||||||||||||||||||
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Helianthinae > Bahiopsis | Asteraceae > tribe Heliantheae | ||||||||||||||||||||||||||||||||||||
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Synonyms | Viguiera reticulata | subtribe Lagasceinae | ||||||||||||||||||||||||||||||||||||
Name authority | (S. Watson) E. E. Schilling & Panero: Bot. J. Linn. Soc. 140: 72. (2002) | Cassini ex Dumortier: Fl. Belg., 71. (1827) | ||||||||||||||||||||||||||||||||||||
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