Difference between revisions of "Quercus wislizeni"
in A. P. de Candolle and A. L. P. de Candolle, Prodr. 16(2): 67. 1864.
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GeoffLevin (talk | contribs) (Corrected "wislizenii" to "wislizeni" throughout.) |
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{{Treatment/ID | {{Treatment/ID | ||
| − | |accepted_name=Quercus | + | |accepted_name=Quercus wislizeni |
|accepted_authority=A. de Candolle | |accepted_authority=A. de Candolle | ||
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
| Line 29: | Line 29: | ||
|rank=variety | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
| − | |name=Quercus | + | |name=Quercus wislizeni var. frutescens |
|authority=Engelmann | |authority=Engelmann | ||
|rank=variety | |rank=variety | ||
}} | }} | ||
| − | |hierarchy=Fagaceae;Quercus;Quercus sect. Lobatae;Quercus | + | |hierarchy=Fagaceae;Quercus;Quercus sect. Lobatae;Quercus wislizeni |
| − | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Fagaceae]]</div><div class="higher-taxon"><small>genus</small>[[Quercus]]</div><div class="higher-taxon"><small>section</small>[[Quercus sect. Lobatae]]</div><div class="higher-taxon"><small>species</small>[[Quercus | + | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Fagaceae]]</div><div class="higher-taxon"><small>genus</small>[[Quercus]]</div><div class="higher-taxon"><small>section</small>[[Quercus sect. Lobatae]]</div><div class="higher-taxon"><small>species</small>[[Quercus wislizeni]]</div></div> |
|volume=Volume 3 | |volume=Volume 3 | ||
|mention_page= | |mention_page= | ||
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|elevation=300-1900 m | |elevation=300-1900 m | ||
|distribution=Calif. | |distribution=Calif. | ||
| − | |discussion=<p>Shrubs with oval leaves 25-38 mm and margins entire or deeply lobed-dentate may be treated as <i>Quercus | + | |discussion=<p>Shrubs with oval leaves 25-38 mm and margins entire or deeply lobed-dentate may be treated as <i>Quercus wislizeni</i> var. <i>frutescens</i>. J. M. Tucker (1993) treated <i>Q. parvula</i> as a distinct species, distinguished from <i>Q. wislizeni</i> by its larger leaves (30-90 versus 20-50 mm), by the dull, olive-green, abaxial leaf surface (versus shiny, yellow-green), and by nuts that are abruptly tapered proximal to the middle (versus gradually tapered).</p><!-- |
| − | --><p>Tucker recognized two varieties of <i>Quercus</i> | + | --><p>Tucker recognized two varieties of <i>Quercus parvula</i>: <i>Q. parvula</i> var.<i> parvula</i> is a shrub of 1-3 m and <i>Q. parvula</i> var. <i>shrevei</i> is a tree less than 17 m. S. K. Langer (1993) recognized a third variety, <i>Q. parvula</i> var. <i>tamalpaisensis</i>, based on several small populations on or near Mount Tamalpais, differentiated primarily by having larger leaves (50-160 × 20-60 mm) with attenuate-dentate margins.</p><!-- |
| − | --><p><i>Quercus | + | --><p><i>Quercus wislizeni</i> reportedly hybridizes with <i>Q. agrifolia</i> and <i>Q. kelloggii</i> (W. B. Brophy and D. R. Parnell 1974).</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|rank=species | |rank=species | ||
|parent rank=section | |parent rank=section | ||
| − | |synonyms=Quercus parvula;Quercus parvula var. shrevei;Quercus parvula var. tamalpaisensis;Quercus | + | |synonyms=Quercus parvula;Quercus parvula var. shrevei;Quercus parvula var. tamalpaisensis;Quercus wislizeni var. frutescens |
|basionyms= | |basionyms= | ||
|family=Fagaceae | |family=Fagaceae | ||
| Line 75: | Line 75: | ||
|genus=Quercus | |genus=Quercus | ||
|section=Quercus sect. Lobatae | |section=Quercus sect. Lobatae | ||
| − | |species=Quercus | + | |species=Quercus wislizeni |
}}<!-- | }}<!-- | ||
-->[[Category:Treatment]][[Category:Quercus sect. Lobatae]] | -->[[Category:Treatment]][[Category:Quercus sect. Lobatae]] | ||
Revision as of 17:34, 30 November 2022
Trees or shrubs, evergreen, to 22 m. Bark nearly black, deeply furrowed with broad scaly ridges. Twigs brown to red-brown, 1.5-3 mm diam., glabrous or sparsely pubescent. Terminal buds light chestnut brown to dark reddish brown, ovoid to conic, 3-9 mm, glabrous or with tuft of minute hairs at apex. Leaves: petiole 3-20 mm, glabrous or sparsely pubescent. Leaf blade circular to oblong, usually ovate, planar, 25-70 × 20-50 mm, base obtuse to cordate, margins entire or spinose with up to 16 awns, apex acute to rounded; surfaces abaxially and adaxially glabrous, veins little raised on either surface. Acorns biennial; cup deeply and narrowly cup-shaped or U-shaped, 9-19 mm high × 7-18 mm wide, covering 1/3-1/2(-2/3) nut, outer surface glabrous to sparsely puberulent, inner surface glabrous or pubescent on innermost 1/3, occasionally uniformly pubescent, scales acute, tips loose; nut narrowly conic or ovoid to narrowly oblong, 21-44 × 8-14 mm, glabrous, scar diam. 2.5-7.5 mm. 2n = 24.
Phenology: Flowering late spring.
Habitat: Valleys, slopes, and sand chaparral
Elevation: 300-1900 m
Discussion
Shrubs with oval leaves 25-38 mm and margins entire or deeply lobed-dentate may be treated as Quercus wislizeni var. frutescens. J. M. Tucker (1993) treated Q. parvula as a distinct species, distinguished from Q. wislizeni by its larger leaves (30-90 versus 20-50 mm), by the dull, olive-green, abaxial leaf surface (versus shiny, yellow-green), and by nuts that are abruptly tapered proximal to the middle (versus gradually tapered).
Tucker recognized two varieties of Quercus parvula: Q. parvula var. parvula is a shrub of 1-3 m and Q. parvula var. shrevei is a tree less than 17 m. S. K. Langer (1993) recognized a third variety, Q. parvula var. tamalpaisensis, based on several small populations on or near Mount Tamalpais, differentiated primarily by having larger leaves (50-160 × 20-60 mm) with attenuate-dentate margins.
Quercus wislizeni reportedly hybridizes with Q. agrifolia and Q. kelloggii (W. B. Brophy and D. R. Parnell 1974).
Selected References
None.