View source for Menziesia ← Menziesia You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Menziesia |accepted_authority=Smith |publications={{Treatment/Publication |title=Pl. Icon. Ined. |place=3: plate 56. 1791, }} |basionyms= |synonyms= |hierarchy=Ericaceae;Ericaceae subfam. Ericoideae;Menziesia |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Ericaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Ericaceae subfam. Ericoideae]]</div><div class="higher-taxon"><small>genus</small>[[Menziesia]]</div></div> |etymology=For Archibald Menzies, 1754–1842, Scottish physician and naturalist with Vancouver Expedition 1790–1795, whobrought the type species from the Northwest Coast |volume=Volume 8 |mention_page=page 372, 375, 449, 451, 456 |treatment_page=page 450 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form"><b>Shrubs.</b></span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem orientation;stem orientation;stem orientation;stem orientation"><b>Stems </b>erect, spreading, or straggling;</span> <span class="statement" id="st-d0_s2" data-properties="">young twigs minutely pilose and hairy;</span> <span class="statement" id="st-d0_s3" data-properties="twig life cycle;twig pubescence;twig pubescence">(older twigs without peglike projections).</span> <span class="statement" id="st-d0_s4" data-properties="leaf duration;leaf arrangement"><b>Leaves </b>deciduous, alternate, (crowded toward branch tips);</span> <span class="statement" id="st-d0_s5" data-properties="petiole presence">petiole present;</span> <span class="statement" id="st-d0_s6" data-properties="blade texture;margin architecture or shape">blade membranous, margins crenulate-serrulate, (rolled under in bud, abaxial surface 1/3+ visible except sometimes in bud).</span> <span class="statement" id="st-d0_s7" data-properties="inflorescence position or structure subtype;inflorescence architecture;inflorescence architecture;inflorescence arrangement;inflorescence architecture"><b>Inflorescences </b>terminal umbelliform or corymbiform clusters on previous year’s shoots, 2–10-flowered;</span> <span class="statement" id="st-d0_s8" data-properties="perula duration;perula texture;margin architecture or pubescence or shape">perulae ± persistent, scarious, margins minutely ciliate.</span> <span class="statement" id="st-d0_s9" data-properties="flower reproduction;flower architecture or shape"><b>Flowers </b>bisexual, ± bilaterally symmetric;</span> <span class="statement" id="st-d0_s10" data-properties="sepal atypical quantity;sepal quantity;sepal fusion;sepal lengths">sepals 4 [–5], connate ca. 3/4 their lengths;</span> <span class="statement" id="st-d0_s11" data-properties="petal atypical quantity;petal quantity;petal fusion;corolla duration;corolla shape;corolla shape">petals 4 [–5], connate for ca. 2/3 their lengths, corolla deciduous, cylindric-urceolate, soon campanulate, (glabrous or finely puberulent adaxially);</span> <span class="statement" id="st-d0_s12" data-properties="stamen quantity;stamen position">stamens 8 [5 or 10], included;</span> <span class="statement" id="st-d0_s13" data-properties="anther dehiscence;terminal slit quantity;terminal slit dehiscence or orientation">anthers without awns, dehiscent adaxially by 2 longitudinal, terminal slits;</span> <span class="statement" id="st-d0_s14" data-properties="ovary architecture or structure in adjective form">ovary 4 [–5] -locular;</span> <span class="statement" id="st-d0_s15" data-properties="style position">style included;</span> <span class="statement" id="st-d0_s16" data-properties="stigma architecture or shape">stigma capitate.</span> <span class="statement" id="st-d0_s17" data-properties="fruit architecture;fruit shape;fruit dehiscence"><b>Fruits </b>capsular, ovoid to ovoid-oblong or obovate, dehiscence basipetally septicidal.</span> <span class="statement" id="st-d0_s18" data-properties="seed quantity;seed shape;seed shape;seed length;tip architecture or shape;appendage architecture or shape;appendage shape"><b>Seeds </b>ca. 50–90, linear or narrowly ovoid, ± prolonged to form apiculate tip or elongate appendage, without wings;</span> <span class="statement" id="st-d0_s19" data-properties="">testa smooth, membranous.</span> <span class="statement" id="st-d0_s20" data-properties="testa architecture or pubescence or relief;testa texture;x chromosome quantity">x = 13.</span><!-- -->{{Treatment/Body |distribution=North America;e Asia (Japan) |discussion=<p>Species 7–10 (2 in the flora).</p><!-- --><p>A close relationship of Menziesia and Rhododendron is hypothesized based on matK analysis. The slightly zygomorphic flowers of the 5-merous Menziesia are similar to those in many species of Rhododendron. Flattened multicellular scales present on the abaxial midrib are also found in Rhododendron sect. Tsususi and on closely related Tsusiophyllum, prompting K. A. Kron (1997) to suggest including both taxa within Rhododendron. Inclusion of Menziesia within Rhododendron is implied also by matK and trnK intron sequence analysis (Y. Kurashige et al. 2001), although its exact relationship remains unresolved.</p><!-- --><p>Levels of genetic diversity among populations in North American Menziesia are quite low relative to gene diversity within populations as indicated by isozyme, flavonoid, and morphological studies, possibly indicating a recent evolutionary origin (T. C. Wells and B. A. Bohm 1994). Divergence between M. pilosa and M. ferruginea from a common widespread ancestor could have occurred as recently as the Pleistocene, some 300,000 to 800,000 years before present. Isozyme data suggest a time of divergence between the Coast/Cascade and Rocky Mountain phenotypes of M. ferruginea of only 60,000 to 80,000 years before present, coincident with the Wisconsin Glaciation, which may have had some effect on north–south and east–west divergences of morphological and isozyme forms (Wells and Bohm).</p><!-- --><p>Species of Menziesia occur in mid to late successional-stage forests in temperate to subalpine habitats. The flowers are pollinated by bumblebees (Bombus Latreille spp.) and other bees. The fine seeds are gravity-dispersed but are apparently susceptible to some dispersal by air currents.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Abaxial leaf surfaces stipitate-glandular and/or hairy, midvein scales lanceolate, not cleft or, rarely, 2-cleft; filaments hairy near base; capsules glabrous or very sparsely stipitate-glandular and/or puberulent; seeds pale brown, linear, 2.5-3 mm including 2 appendages of 1 mm each; w North America. |[[Menziesia ferruginea|Menziesia ferruginea]] |-id=key-0-1 |1 |Abaxial leaf surfaces densely pilose, midvein scales narrowly oblong, lacerate or cleft; filaments glabrous; capsules densely stipitate-glandular; seeds brown, narrowly ovoid, ca. 1 mm including apiculuslike appendage of 0.1 mm; se United States |[[Menziesia pilosa|Menziesia pilosa]] |} </div></div><!-- -->{{#Taxon: name=Menziesia |author=Dorothy M. Fabijan |authority=Smith |rank=genus |parent rank=subfamily |synonyms= |basionyms= |family=Ericaceae |illustrator=Barbara Alongi |illustration copyright=Flora of North America Association |distribution=North America;e Asia (Japan) |reference=None |publication title=Pl. Icon. Ined. |publication year= |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V8/V8_890.xml |subfamily=Ericaceae subfam. Ericoideae |genus=Menziesia |anther dehiscence=dehiscent |appendage architecture or shape=apiculate |appendage shape=elongate |blade texture=membranous |corolla duration=deciduous |corolla shape=campanulate;cylindric-urceolate |flower architecture or shape=symmetric |flower reproduction=bisexual |fruit architecture=capsular |fruit dehiscence=septicidal |fruit shape=ovoid;ovoid-oblong or obovate |inflorescence architecture=2-10-flowered;corymbiform;umbelliform |inflorescence arrangement=cluster |inflorescence position or structure subtype=terminal |leaf arrangement=alternate |leaf duration=deciduous |margin architecture or pubescence or shape=ciliate |margin architecture or shape=crenulate-serrulate |ovary architecture or structure in adjective form=4[-5]-locular |perula duration=persistent |perula texture=scarious |petal atypical quantity=4;5 |petal fusion=connate |petal quantity=4 |petiole presence=absent |seed length=prolonged |seed quantity=50;90 |seed shape=ovoid;linear |sepal atypical quantity=4;5 |sepal fusion=connate |sepal lengths=3/4 |sepal quantity=4 |stamen position=included |stamen quantity=8 |stem orientation=straggling;spreading;straggling;spreading;erect |stigma architecture or shape=capitate |style position=included |terminal slit dehiscence or orientation=longitudinal |terminal slit quantity=2 |testa architecture or pubescence or relief=smooth |testa texture=membranous |tip architecture or shape=apiculate |twig life cycle=young |twig pubescence=hairy;pilose |whole_organism growth form=shrub |x chromosome quantity=13 }}<!-- -->[[Category:Treatment]][[Category:Ericaceae subfam. Ericoideae]] Templates used on this page: Template:Ericaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Return to Menziesia.