View source for Rosaceae tribe Dryadeae

{{Treatment/ID
|accepted_name=Rosaceae tribe Dryadeae
|accepted_authority=Lamarck & de Candolle
|publications={{Treatment/Publication
|title=Syn. Pl. Fl. Gall.,
|place=334. 1806
|year=1806
}}
|basionyms=
|synonyms=
|hierarchy=Rosaceae;Rosaceae subfam. Dryadoideae;Rosaceae tribe Dryadeae
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Dryadoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Dryadeae]]</div></div>
|volume=Volume 9
|mention_page=page 21, 327
|treatment_page=page 326
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism architecture;whole_organism growth form"><b>Plants </b>unarmed.</span> <span class="statement" id="st-d0_s1" data-properties="leaf arrangement;leaf architecture;leaf architecture;basal leaflet quantity"><b>Leaves </b>alternate, simple, sometimes pinnately compound or basal leaflets 1 (or 2);</span> <span class="statement" id="st-d0_s2" data-properties="">stipules deciduous or persistent, free or adnate to petiole;</span> <span class="statement" id="st-d0_s3" data-properties="stipule duration;stipule duration;stipule fusion;stipule fusion;stipule architecture or shape">venation pinnate.</span> <span class="statement" id="st-d0_s4" data-properties="perianth position;androecium position"><b>Flowers:</b> perianth and androecium perigynous;</span> <span class="statement" id="st-d0_s5" data-properties="epicalyx bractlet presence">epicalyx bractlets absent;</span> <span class="statement" id="st-d0_s6" data-properties="hypanthium shape;hypanthium shape;hypanthium shape;hypanthium shape;hypanthium shape;hypanthium shape">hypanthium saucer-shaped, obconic, funnelform-turbinate, or cylindric;</span> <span class="statement" id="st-d0_s7" data-properties="torus presence;torus shape">torus absent or hemispheric;</span> <span class="statement" id="st-d0_s8" data-properties="carpel quantity;carpel quantity;carpel fusion;carpel fusion;style position or structure subtype;style fusion">carpels 1 (or 2) or 4–150, distinct, free, styles terminal, distinct;</span> <span class="statement" id="st-d0_s9" data-properties="ovule quantity;ovule position">ovule 1, basal (without obturator).</span> <span class="statement" id="st-d0_s10" data-properties="fruits achene arrangement"><b>Fruits </b>achenes or aggregated achenes;</span> <span class="statement" id="st-d0_s11" data-properties="style duration;style shape">styles persistent, elongate.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;Eurasia
|discussion=<p>Genera 4, species 34 (4 genera, 17 species in the flora).</p><!--
--><p>Members of Dryadeae are nitrogen fixing in association with Frankia. Cyanogenic glycosides are present, and sorbitol is present in trace amounts. The base chromosome number for the tribe is x = 9 (D. Potter et al. 2007). Dryadeae is probably North American in origin.</p><!--
--><p>The obturator is a placental (or funicular) outgrowth present at the micropylar end, which directs the passage of pollen tubes towards the ovule.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves 2–3-odd-pinnately compound; inflorescences (1–)2–7(–10)-flowered, corymbs or panicles.
|[[Chamaebatia|Chamaebatia]]
|-id=key-0-1
|1
|Leaves simple or with 1(–2) basal leaflets, (margins lobed, toothed, or entire); inflorescences 1–3(–18)-flowered clusters or flowers solitary
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Petals 0; hypanthia narrowly cylindric; carpels 1(or 2); achenes solitary.
|[[Cercocarpus|Cercocarpus]]
|-id=key-0-2
|2
|Petals 5–10(–12); hypanthia saucer-shaped or obconic; carpels 1–31 or 60–150; achenes usually aggregated, sometimes solitary (Purshia)
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Shrubs 0.1–2.3 dm; hypanthia saucer-shaped; petals 8–10(–12).
|[[Dryas|Dryas]]
|-id=key-0-3
|3
|Shrubs 2–75 dm; hypanthia obconic; petals 5.
|[[Purshia|Purshia]]
|}
</div></div><!--

-->{{#Taxon:
name=Rosaceae tribe Dryadeae
|authority=Lamarck & de Candolle
|rank=tribe
|parent rank=subfamily
|synonyms=
|basionyms=
|family=Rosaceae
|distribution=North America;Mexico;Eurasia
|reference=None
|publication title=Syn. Pl. Fl. Gall.,
|publication year=1806
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V9/V9_533.xml
|subfamily=Rosaceae subfam. Dryadoideae
|tribe=Rosaceae tribe Dryadeae
|androecium position=perigynous
|basal leaflet quantity=1
|carpel fusion=free;distinct
|carpel quantity=4;150
|epicalyx bractlet presence=absent
|fruits achene arrangement=aggregated
|hypanthium shape=cylindric;funnelform-turbinate;cylindric;funnelform-turbinate;obconic;saucer--shaped
|leaf architecture=compound;simple
|leaf arrangement=alternate
|ovule position=basal
|ovule quantity=1
|perianth position=perigynous
|stipule architecture or shape=pinnate
|stipule duration=persistent;deciduous
|stipule fusion=adnate;free
|style duration=persistent
|style fusion=distinct
|style position or structure subtype=terminal
|style shape=elongate
|torus presence=absent
|torus shape=hemispheric
|whole_organism architecture=unarmed
|whole_organism growth form=plant
}}<!--

-->[[Category:Treatment]][[Category:Rosaceae subfam. Dryadoideae]]