Difference between revisions of "Ceanothus incanus"

Torrey & A. Gray

Fl. N. Amer. 1: 265. 1838.

Common names: Coast whitethorn
Endemic
Treatment appears in FNA Volume 12. Treatment on page 86. Mentioned on page 79, 80, 87, 90.
FNA>Volume Importer
 
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|elevation=60–1000 m.
 
|elevation=60–1000 m.
 
|distribution=Calif.
 
|distribution=Calif.
|discussion=<p>Ceanothus incanus is restricted to the Klamath and Santa Cruz mountains and North Coast Ranges of California. Some populations are evidently polymorphic for the presence of thorn-tipped or non-thorn-tipped branchlets (F. K. Klein 1970). Putative hybrids with C. papillosus and C. parryi have been reported (H. McMinn 1944); hybrids with C. thyrsiflorus have been called C. ×vanrensselaeri Roof.</p>
+
|discussion=<p><i>Ceanothus incanus</i> is restricted to the Klamath and Santa Cruz mountains and North Coast Ranges of California. Some populations are evidently polymorphic for the presence of thorn-tipped or non-thorn-tipped branchlets (F. K. Klein 1970). Putative hybrids with <i>C. papillosus</i> and <i>C. parryi</i> have been reported (H. McMinn 1944); hybrids with <i>C. thyrsiflorus</i> have been called C. ×vanrensselaeri Roof.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
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|publication year=1838
 
|publication year=1838
 
|special status=Endemic
 
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V12/V12_537.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V12/V12_537.xml
 
|genus=Ceanothus
 
|genus=Ceanothus
 
|subgenus=Ceanothus subg. Ceanothus
 
|subgenus=Ceanothus subg. Ceanothus

Revision as of 14:47, 18 September 2019

Shrubs, evergreen, 1–4 m. Stems erect, not rooting at nodes; branchlets light gray, glaucous, thorn-tipped or not, round or slightly angled in cross section, rigid, puberulent, glabrescent. Leaves not fascicled; petiole 3–12 mm; blade flat, elliptic, ovate, or suborbiculate, 20–60 × 10–30 mm, base rounded or subcordate, margins entire, sometimes minutely glandular-denticulate above middle, glands 26–52, apex obtuse, abaxial surface pale green, appressed-puberulent, glabrescent, adaxial surface grayish green, dull, glabrate; 3-veined from base. Inflorescences axillary, usually paniclelike, sometimes racemelike, 3–6 cm. Flowers: sepals, petals, and nectary usually white to cream, sometimes pink. Capsules 4–5 mm wide, ± lobed; valves rugose, viscid when young, not or weakly crested. 2n = 24.


Phenology: Flowering Apr–Jun.
Habitat: Flats, slopes, chaparral, open sites in conifer and mixed evergreen forests.
Elevation: 60–1000 m.

Discussion

Ceanothus incanus is restricted to the Klamath and Santa Cruz mountains and North Coast Ranges of California. Some populations are evidently polymorphic for the presence of thorn-tipped or non-thorn-tipped branchlets (F. K. Klein 1970). Putative hybrids with C. papillosus and C. parryi have been reported (H. McMinn 1944); hybrids with C. thyrsiflorus have been called C. ×vanrensselaeri Roof.

Selected References

None.

Lower Taxa

None.