Difference between revisions of "Echinocereus pectinatus"
in F. A. Wislizenus, Mem. Tour N. Mexico, 109. 1848.
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|distribution=Tex.;n Mexico. | |distribution=Tex.;n Mexico. | ||
|discussion=<p>Varieties 2 (1 in the flora).</p><!-- | |discussion=<p>Varieties 2 (1 in the flora).</p><!-- | ||
| − | --><p>At least in the United States, Echinocereus pectinatus (diploid) has only pink or purple flowers, unlike the polymorphic species E. dasyacanthus (tetraploid). Echinocereus pectinatus differs from the entire E. reichenbachii species group in that the areoles of its relatively thick-walled flower tube have stouter spines and much shorter hairs. Superficially similar species west of the Continental Divide, formerly associated with E. pectinatus (E. pseudopectinatus, E. rigidissimus, and some Sonoran species), are more closely related to the E. reichenbachii species group with densely bristly flower buds and delicate, ephemeral inner tepals. Echinocereus pectinatus var. pectinatus is endemic to Mexico; reports from the United States were misidentifications of var. wenigeri, E. pseudopectinatus (in Arizona), and unusually short-spined plants of E. dasyacanthus.</p> | + | --><p>At least in the United States, <i>Echinocereus pectinatus</i> (diploid) has only pink or purple flowers, unlike the polymorphic species <i>E. dasyacanthus</i> (tetraploid). <i>Echinocereus pectinatus</i> differs from the entire <i>E. reichenbachii</i> species group in that the areoles of its relatively thick-walled flower tube have stouter spines and much shorter hairs. Superficially similar species west of the Continental Divide, formerly associated with <i>E. pectinatus</i> (<i>E. pseudopectinatus</i>, <i>E. rigidissimus</i>, and some Sonoran species), are more closely related to the <i>E. reichenbachii</i> species group with densely bristly flower buds and delicate, ephemeral inner tepals. <i>Echinocereus pectinatus</i> var. pectinatus is endemic to Mexico; reports from the United States were misidentifications of <i></i>var.<i> wenigeri</i>, <i>E. pseudopectinatus</i> (in Arizona), and unusually short-spined plants of <i>E. dasyacanthus</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1848 | |publication year=1848 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V4/V4_312.xml |
|subfamily=Cactaceae subfam. Cactoideae | |subfamily=Cactaceae subfam. Cactoideae | ||
|genus=Echinocereus | |genus=Echinocereus | ||
Revision as of 18:27, 18 September 2019
Distribution
Tex., n Mexico.
Discussion
Varieties 2 (1 in the flora).
At least in the United States, Echinocereus pectinatus (diploid) has only pink or purple flowers, unlike the polymorphic species E. dasyacanthus (tetraploid). Echinocereus pectinatus differs from the entire E. reichenbachii species group in that the areoles of its relatively thick-walled flower tube have stouter spines and much shorter hairs. Superficially similar species west of the Continental Divide, formerly associated with E. pectinatus (E. pseudopectinatus, E. rigidissimus, and some Sonoran species), are more closely related to the E. reichenbachii species group with densely bristly flower buds and delicate, ephemeral inner tepals. Echinocereus pectinatus var. pectinatus is endemic to Mexico; reports from the United States were misidentifications of var. wenigeri, E. pseudopectinatus (in Arizona), and unusually short-spined plants of E. dasyacanthus.
Selected References
None.