Peritoma arborea var. angustata

(Parish) H. H. Iltis

Novon 17: 449. 2007.

Basionym: Isomeris arborea var. angustata Parish Muhlenbergia 3: 128. 1907
Synonyms: Isomeris arborea var. insularis Jepson
Treatment appears in FNA Volume 7. Treatment on page 206.
Revision as of 11:06, 30 July 2020 by imported>Volume Importer
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Capsules not inflated, narrowly fusiform (long-attenuate at both ends).


Phenology: Flowering summer.
Habitat: Hillsides, grasslands, desert washes and flats, roadsides
Elevation: 0-1300 m

Distribution

V7 273-distribution-map.gif

Ariz., Calif., Mexico (Baja California), Mexico (Colima), Mexico (Sonora)

Discussion

Variety angustata is found in the Colorado and Mojave deserts and in western and northwestern Mexico, including offshore islands (e.g., Revillagigedo Islands). Plants with particularly narrow capsules from Cedros Islands (Baja California) have been distinguished as var. insularis.

Selected References

None.

Lower Taxa

None.
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
acuminate +  and obtuse +
Staria S. Vanderpool +  and Hugh H. Iltis +
(Parish) H. H. Iltis +
Isomeris arborea var. angustata +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
serrulate +, serrate +  and entire +
oblongelliptic +
0.4 cm4 mm <br />0.004 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
obovate;spatulate +
0.2 cm2 mm <br />0.002 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
fusiform +  and not inflated +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Ariz. +, Calif. +, Mexico (Baja California) +, Mexico (Colima) +  and Mexico (Sonora) +
0-1300 m +
adnate +  and free +
rotate;crateriform campanulate or urceolate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
dehiscent +  and indehiscent +
elongate +
Hillsides, grasslands, desert washes and flats, roadsides +
sessile +  and stalked +
axillary +  and terminal +
arranged +  and alternate +
entire +  and serrate +
1-carpellate +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
distinct +
8mm;14mm +
ovate-elliptic +
unequal +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering summer. +
tricolporate +  and binucleate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not arillate +
dark-brown +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
obovoid +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
persistent +
lanceolate +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glandular-pubescent +  and glabrous +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
spreading +  and erect +
puberulent +  and glabrate +
deciduous +  and caducous +
scale-like +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Isomeris arborea var. insularis +
Peritoma arborea var. angustata +
Peritoma arborea +
variety +
perennial +  and annual +