Jamesia americana var. macrocalyx

(Small) Engler in H. G. A. Engler and K. Prantl

Nat. Pflanzenfam. ed. 2, 18a: 196. 1930.

IllustratedEndemicConservation concern
Basionym: Edwinia macrocalyx Small in N. L. Britton et al. N. Amer. Fl. 22: 176. 1905
Treatment appears in FNA Volume 12. Treatment on page 465.

Bark exfoliating tardily in gray strips or strings. Leaves: petiole 2–8 (–12) mm; blade ovate to obovate or rhombic, (0.7–) 1.2–3 (–3.9) × (0.5–) 0.8–1.8 (–3.2) cm, margins dentate, teeth (5–) 11–21 (–27). Inflorescences usually (2–) 3–9 (–13) -flowered, sometimes flowers solitary. Flowers: sepals lanceolate to triangular-ovate, (2.5–) 3–7 mm; petals white or pinkish white, (6.5–) 7.5–11.5 mm; styles 4–6.7 mm.


Phenology: Flowering Jun–Aug.
Habitat: Cliffs, crevices, rocky slopes.
Elevation: (1700–)2100–3300(–3700) m.

Discussion

Variety macrocalyx is known from Juab, Salt Lake, Tooele, Utah, and Wasatch counties.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."connate" is not a number. "distinct" is not a number.

strigose +, sericeous +  and canescent +
sparsely strigose;glabrescent +
0.2 cm2 mm <br />0.002 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
distinct +
0.27 cm2.7 mm <br />0.0027 m <br /> (1 cm10 mm <br />0.01 m <br />) +
tapered +, or +  and flattened +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
depressed-ovate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
acute +  and obtuse +
Craig C. Freeman +
(Small) Engler in H. G. A. Engler and K. Prantl +
gray +  and brown +
exfoliating +
cuneate +  and obtuse or rounded +
Edwinia macrocalyx +
3 cm30 mm <br />0.03 m <br /> (3.9 cm39 mm <br />0.039 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (3 cm30 mm <br />0.03 m <br />) +
ovate +  and obovate or rhombic +
0.8 cm8 mm <br />0.008 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
ascending;spreading +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
conic +  and ovoid +
0.2 cm2 mm <br />0.002 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
2-35-flowered +
(1700–)2100–3300(–3700) m. +
loculicidal +  and septicidal +
intercostal +  and interstylar +
Cliffs, crevices, rocky slopes. +
hemispheric +
2.5mm;4.5mm +
(2-)3-9(-13)-flowered +
axillary +  and terminal +
deciduous +
acrodromous +  and pinnate +
2-3-lobed +, (5-)9-51(-69)-toothed +, crenate +  and dentate +
0 +  and 1/2 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.15 cm11.5 mm <br />0.0115 m <br />) +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
pinkish white +  and white +
5.5mm;11mm +
canescent +  and strigose +
oblanceolate +  and obovate +
0.75 cm7.5 mm <br />0.0075 m <br /> (1.15 cm11.5 mm <br />0.0115 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
ascending-strigose +  and canescent or sericeous +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering Jun–Aug. +
3-5-carpellate +
Nat. Pflanzenfam. ed. +
tan +  and orangish brown +
25 +  and 50 +
ellipsoid +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +
connate +  and distinct +
sericeous +, canescent +  and strigose +
lanceolate +  and triangular-ovate +
enlarged +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
blackish +  and reddish-brown +
Illustrated +, Endemic +  and Conservation concern +
free +, connate +  and distinct +
spreading;ascending +
2 +  and 12 +
persistent +
distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.67 cm6.7 mm <br />0.0067 m <br />) +
Edwinia americana +
Jamesia americana var. macrocalyx +
Jamesia americana +
variety +
ascending-strigose +
deciduous +  and evergreen +