Eremothera boothii subsp. alyssoides

(Hooker & Arnott) W. L. Wagner & Hoch

Syst. Bot. Monogr. 83: 209. 2007.

Basionym: Oenothera alyssoides Hooker & Arnott Bot. Beechey Voy., 340. 1839
Synonyms: Camissonia boothii subsp. alyssoides (Hooker & Arnott) P. H. Raven C. boothii var. alyssoides (Hooker & Arnott) N. H. Holmgren & P. K. Holmgren C. boothii var. villosa (S. Watson) Cronquist Holostigma alyssoides (Hooker & Arnott) Hooker O. alyssoides var. villosa S. Watson O. boothii subsp. alyssoides (Hooker & Arnott) Munz O. gauriflora var. hitchcockii H. Léveillé O. utahensis (Small) Garrett Sphaerostigma alyssoides (Hooker & Arnott) Walpers S. hitchcockii (H. Léveillé) A. Nelson S. implexum A. Nelson S. macrophyllum Rydberg S. utahense Small
Treatment appears in FNA Volume 10.
Revision as of 20:03, 7 June 2022 by imported>Volume Importer
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Herbs usually strigillose, often densely so, especially in inflorescence, rarely villous and/or glandular puberulent. Stems 3–35 cm. Leaves not especially clustered toward base, mostly evenly distributed, 1–5.5 (–7.5) × 0.3–1.6 cm; petiole 0–6 cm; blade very narrowly elliptic to narrowly ovate or ovate, margins sparsely denticulate. Inflorescences ± open. Flowers: floral-tube 3–8 mm; petals white, 4–5 mm. Capsules usually very contorted, 1–1.5 mm diam. near base. Seeds monomorphic.


Phenology: Flowering May–Jun(–Aug).
Habitat: Sandy slopes and flats, sagebrush, shadscale, rabbitbrush shrublands or pinyon-juniper woodlands.
Elevation: 600–2000 m.

Distribution

Calif., Idaho, Nev., Oreg., Utah.

Discussion

Subspecies alyssoides intergrades broadly with subsp. intermedia in Nevada and is very similar to subsp. desertorum. Sphaerostigma alyssoides var. macrophyllum Small is an illegitimate name that applies here.

Selected References

None.

Lower Taxa

None.
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
Warren L. Wagner +
(Hooker & Arnott) W. L. Wagner & Hoch +
papillose +
Oenothera alyssoides +
indehiscent +  and loculicidal +
entire +, sinuate-toothed +, serrulate +  and denticulate +
very narrowly elliptic +  and narrowly ovate or ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
spreading +  and curved downward +
4-angled +, terete +  and cylindrical +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
Calif. +, Idaho +, Nev. +, Oreg. +  and Utah. +
600–2000 m. +
reddish green +  and white +
exfoliating +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.58 cm5.8 mm <br />0.0058 m <br />) +
basifixed +  and versatile +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
actinomorphic +
straight +
loculicidal +
4-angled +, terete +  and cylindrical +
Sandy slopes and flats, sagebrush, shadscale, rabbitbrush shrublands or pinyon-juniper woodlands. +
puberulent +, glandular +, villous +  and strigillose +
stout +  and slender +
distributed +
5.5 cm55 mm <br />0.055 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
2.2 cm22 mm <br />0.022 m <br /> (3 cm30 mm <br />0.03 m <br />) +
deciduous +
1 cm10 mm <br />0.01 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
denticulate +
numerous +  and 1 +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering May–Jun(–Aug). +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
Syst. Bot. Monogr. +
basal +  and cauline +
clavate +  and globose +
monomorphic +
7 +  and numerous +
sculptured +  and smooth +
truncate-ellipsoid +, narrowly obovoid +  and oblanceoloid +
in pairs +  and singly +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
purple +, pink +, red +  and green +
deciduous +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
parenchymatous +
parietal +, axile +  and placentation +
unequal +
aquatic +, amphibious +  and terrestrial +
episepalous +
2 times as many or as many as sepals +
prostrate +  and decumbent +
ascending +  and erect +
3 cm30 mm <br />0.03 m <br /> (35 cm350 mm <br />0.35 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
subglobose +
subsessile +  and petiolate +
intrapetiolar +
1.35 cm13.5 mm <br />0.0135 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.82 cm8.2 mm <br />0.0082 m <br /> (1.35 cm13.5 mm <br />0.0135 m <br />) +
aquatic +, amphibious +  and terrestrial +
0.14 cm1.4 mm <br />0.0014 m <br /> (?) +  and 0.21 cm2.1 mm <br />0.0021 m <br /> (?) +
non-papillate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (?) +  and 0.07 cm0.7 mm <br />7.0e-4 m <br /> (?) +
Camissonia boothii subsp. alyssoides +, C. boothii var. alyssoides +, C. boothii var. villosa +, Holostigma alyssoides +, O. alyssoides var. villosa +, O. boothii subsp. alyssoides +, O. gauriflora var. hitchcockii +, O. utahensis +, Sphaerostigma alyssoides +, S. hitchcockii +, S. implexum +, S. macrophyllum +  and S. utahense +
Eremothera boothii subsp. alyssoides +
Eremothera boothii +
subspecies +
3(-5)-aperturate +
smooth +  and erose +
papillate +