Frasera speciosa |
Frasera fastigiata |
|
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deer's-ears, elkweed, frasera, giant frasera, monument plant |
cluster frasera, cluster frasera or green-gentian, cluster green gentian, Umpqua green-gentian |
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Habit | Herbs monocarpic, 5–20 dm, glabrous or stems and leaves puberulent. | Herbs monocarpic, 3–14 dm, glabrous. |
Stems | 1. |
1. |
Leaf | blades not white-margined; basal spatulate or oblanceolate to elliptic-obovate, 7–50 × 1–15 cm, apex rounded to acute; cauline leaves whorled, blade oblong-lanceolate. |
blades not white-margined; basal spatulate-obovate, 15–60 (including proximal petiolar portions) × 3–17 cm; proximal cauline leaves whorled, distal often opposite, blades widely elliptic to ovate, apex obtuse to acute (proximal) to acuminate (distal). |
Inflorescences | elongate, open proximally, ± dense distally. |
dense, sometimes interrupted proximally. |
Flowers | calyx 10–25 mm; corolla pale yellowish green, purple-dotted, occasionally suffused with purple distally, 12–25 mm, lobes elliptic-oblong to obovate, apex [obtuse or] acute to short-acuminate; androecial corona scales 7–9 mm, deeply multicleft; style slender, distinct; nectaries and foveae 2 per corolla lobe, foveae narrowly elliptic, opening directly adaxial to nectary, each opening with a ± even fringe all around, the pair opening into a green but not rimmed area on the corolla surface. |
calyx 4.4–13 mm; corolla light to medium blue or violet-blue with darker veins, often spotted, 6.7–13.4 mm, lobes elliptic-ovate, apex short-acuminate; androecial corona a sparse fringe of hairs to 5 mm, occasionally absent; style short, ± stout and indistinctly differentiated from summit of ovary; nectaries and foveae 1 per corolla lobe, foveae round or nearly so, opening directly adaxial to nectary, without a differentiated area on the corolla surface, rim raised, with long, incurved fringes all around. |
2n | = 78. |
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Frasera speciosa |
Frasera fastigiata |
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Phenology | Flowering summer. | Flowering late spring–summer. |
Habitat | Open woods, montane to subalpine meadows. | Mountain meadows, open woods. |
Elevation | 1500–3500 m. (4900–11500 ft.) | 1600–2000 m. (5200–6600 ft.) |
Distribution |
AZ; CA; CO; ID; MT; NM; NV; OR; SD; TX; UT; WA; WY; Mexico (Nuevo León, Tamaulipas)
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ID; WA
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Discussion | Swertia radiata var. maderensis Henrickson, endemic to Mexico, is conspecific with Frasera speciosa, but the necessary combination in Frasera has not been published. If that is done, our material will become var. speciosa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 14. | FNA vol. 14. |
Parent taxa | Gentianaceae > Frasera | Gentianaceae > Frasera |
Sibling taxa | ||
Synonyms | F. macrophylla, Swertia radiata, Swertia radiata var. macrophylla, Tesseranthium radiatum, T. speciosum | Swertia fastigiata |
Name authority | Douglas ex Grisebach in W. J. Hooker: Fl. Bor.-Amer. 2: 66, plate 153. (1837) | (Pursh) A. Heller: Bull. Torrey Bot. Club 24: 312. (1897) |
Web links |