Difference between revisions of "Ceanothus perplexans"
in A. Gray et al., Syn. Fl. N. Amer. 1(1,2): 417. 1897.
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|accepted_name=Ceanothus perplexans | |accepted_name=Ceanothus perplexans | ||
| − | |accepted_authority=Trelease | + | |accepted_authority=Trelease |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
| − | |title=Syn. Fl. N. Amer. | + | |title=in A. Gray et al., Syn. Fl. N. Amer. |
|place=1(1,2): 417. 1897 | |place=1(1,2): 417. 1897 | ||
|year=1897 | |year=1897 | ||
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|name=Ceanothus greggii var. perplexans | |name=Ceanothus greggii var. perplexans | ||
|authority=(Trelease) Jepson | |authority=(Trelease) Jepson | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Rhamnaceae;Ceanothus;Ceanothus subg. Cerastes;Ceanothus perplexans | |hierarchy=Rhamnaceae;Ceanothus;Ceanothus subg. Cerastes;Ceanothus perplexans | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Ceanothus perplexans | name=Ceanothus perplexans | ||
| − | + | |authority=Trelease | |
| − | |authority=Trelease | ||
|rank=species | |rank=species | ||
|parent rank=subgenus | |parent rank=subgenus | ||
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|distribution=Ariz.;Calif.;Mexico (Baja California). | |distribution=Ariz.;Calif.;Mexico (Baja California). | ||
|reference=None | |reference=None | ||
| − | |publication title=Syn. Fl. N. Amer. | + | |publication title=in A. Gray et al., Syn. Fl. N. Amer. |
|publication year=1897 | |publication year=1897 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V12/V12_476.xml |
|genus=Ceanothus | |genus=Ceanothus | ||
|subgenus=Ceanothus subg. Cerastes | |subgenus=Ceanothus subg. Cerastes | ||
Latest revision as of 19:15, 5 November 2020
Shrubs, 1–2 m. Stems erect, not rooting at nodes; branchlets brown to grayish brown, rigid, glabrate or tomentulose, glabrescent. Leaves not fascicled; petiole 1–3 mm; blade flat to ± cupped, elliptic, widely obovate, or suborbiculate, 10–20 × 7–18 mm, base rounded, margins thick, not revolute, usually sharply denticulate, sometimes weakly denticulate to almost entire, teeth 7–15, apex rounded to ± truncate, abaxial surface pale green to yellowish green, puberulent, hairs curly, glabrescent, adaxial surface green to yellowish green, sparsely puberulent, hairs curly, glabrescent. Inflorescences axillary, 0.7–2 cm. Flowers: sepals and petals white to cream; nectary yellow to green. Capsules 4–6 mm wide, usually not, sometimes weakly, lobed; valves smooth, horns lateral, usually minute, sometimes absent, spreading, intermediate ridges absent. 2n = 24.
Phenology: Flowering Jan–Apr.
Habitat: Granitic or metamorphic substrates, rocky slopes, ridges, alluvial fans, chaparral, montane shrublands, pinyon and/or juniper and montane conifer woodlands.
Elevation: 500–1900 m.
Distribution
Ariz., Calif., Mexico (Baja California).
Discussion
Ceanothus perplexans occurs in southwestern Arizona, on the desert slopes of the San Bernardino Mountains and Peninsular Ranges of southern California, and in Baja California. Ceanothus specimens from Guadalupe Island, Baja California, with entire or weakly denticulate leaf margins have been referred to either C. crassifolius or C. cuneatus, but in their leaf shape and indumentum they more closely resemble C. perplexans.
Selected References
None.