Difference between revisions of "Magnolia ashei"

Weatherby

Rhodora 28: 35. 1926.

Common names: Ashe's magnolia
Conservation concernEndemicSelected by author to be illustrated
Synonyms: Subspecies (Weatherby) SpongbergVariety (Weatherby) D.L. Johnson
Treatment appears in FNA Volume 3.
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--><span class="statement" id="st-d0_s0" data-properties="tree duration;tree atypical some measurement;tree some measurement"><b>Trees,</b> deciduous, often multitrunked, to 10 (-12) m.</span> <span class="statement" id="st-d0_s1" data-properties="bark coloration;bark architecture or pubescence or relief"><b>Bark </b>dark gray, smooth.</span> <span class="statement" id="st-d0_s2" data-properties="pith variability"><b>Pith </b>homogeneous.</span> <span class="statement" id="st-d0_s3" data-properties="twig pubescence;foliar bud pubescence"><b>Twigs </b>and foliar buds silky-pubescent.</span> <span class="statement" id="st-d0_s4" data-properties="leaf arrangement;terminal cluster arrangement"><b>Leaves </b>crowded in terminal whorl-like clusters;</span> <span class="statement" id="st-d0_s5" data-properties="stipule length;stipule width;stipule pubescence;stipule architecture or function or pubescence">stipules 6-8 × 3-4 cm, abaxially pilose, glandular.</span> <span class="statement" id="st-d0_s6" data-properties="leaf-blade shape;leaf-blade shape;leaf-blade shape;leaf-blade atypical length;leaf-blade atypical length;leaf-blade length;leaf-blade atypical width;leaf-blade atypical width;leaf-blade width;base shape;base shape;base shape;base shape;apex shape;apex shape;apex shape"><b>Leaf-</b>blade broadly elliptic to obovate-oblong, (17-) 25-46 (-56) × (10-) 15-30 (-40) cm, base truncate to deeply cordate or auriculate, apex acute to short-acuminate;</span> <span class="statement" id="st-d0_s7" data-properties="surface coloration;surface coloration;surface pubescence;surface pubescence;surface depth;surface coloration;surface pubescence">surfaces abaxially chalky white or pale green to glaucous, pilose, adaxially deep green, glabrous.</span> <span class="statement" id="st-d0_s8" data-properties="flower architecture or arrangement or growth form;flower architecture or arrangement or growth form;flower odor;flower atypical some measurement;flower some measurement;twig arrangement"><b>Flowers </b>solitary or often in pairs on adjacent twigs, fragrant, 15-38 (-50) cm across;</span> <span class="statement" id="st-d0_s9" data-properties="beak architecture;beak quantity;outer bract coloration;inner bract pubescence">spathaceous bracts 2, outer bract abaxially rusty gray, inner bract glabrous;</span> <span class="statement" id="st-d0_s10" data-properties="tepal coloration;tepal architecture or function or pubescence;innermost whorl coloration;outermost segment orientation;outermost segment coloration">tepals creamy white, glandular, innermost whorl purple-blotched at base, outermost segments strongly reflexed, greenish;</span> <span class="statement" id="st-d0_s11" data-properties="stamen quantity;stamen some measurement">stamens 170-350, 13-20 mm;</span> <span class="statement" id="st-d0_s12" data-properties="filament coloration">filaments white;</span> <span class="statement" id="st-d0_s13" data-properties="pistil quantity">pistils 20-50.</span> <span class="statement" id="st-d0_s14" data-properties="follicetum shape;follicetum shape;follicetum shape;follicetum length;follicetum width"><b>Follicetums </b>cylindric to nearly ovoid, 2.5-6.5 × 1.5-4 cm;</span> <span class="statement" id="st-d0_s15" data-properties="follicle architecture or shape;follicle fixation or orientation;follicle pubescence">follicles short-beaked, distally appressed silky-pubescent.</span> <span class="statement" id="st-d0_s16" data-properties="seed shape;seed shape;seed some measurement"><b>Seeds </b>lenticular to somewhat globose, 8-10 mm, aril orange-red.</span> <span class="statement" id="st-d0_s17" data-properties="aril coloration;2n chromosome quantity">2n=38.</span><!--
+
--><span class="statement" id="st-undefined" data-properties=""><b>Trees,</b> deciduous, often multitrunked, to 10(-12) m. <b>Bark</b> dark gray, smooth. <b>Pith</b> homogeneous. <b>Twigs</b> and foliar buds silky-pubescent. <b>Leaves</b> crowded in terminal whorl-like clusters; stipules 6-8 × 3-4 cm, abaxially pilose, glandular. <b>Leaf</b> blade broadly elliptic to obovate-oblong, (17-)25-46(-56) × (10-)15-30(-40) cm, base truncate to deeply cordate or auriculate, apex acute to short-acuminate; surfaces abaxially chalky white or pale green to glaucous, pilose, adaxially deep green, glabrous. <b>Flowers</b> solitary or often in pairs on adjacent twigs, fragrant, 15-38(-50) cm across; spathaceous bracts 2, outer bract abaxially rusty gray, inner bract glabrous; tepals creamy white, glandular, innermost whorl purple-blotched at base, outermost segments strongly reflexed, greenish; stamens 170-350, 13-20 mm; filaments white; pistils 20-50. <b>Follicetums</b> cylindric to nearly ovoid, 2.5-6.5 × 1.5-4 cm; follicles short-beaked, distally appressed silky-pubescent. <b>Seeds</b> lenticular to somewhat globose, 8-10 mm, aril orange-red. <b>2n</b>=38.</span><!--
  
 
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|publication year=1926
 
|publication year=1926
 
|special status=Conservation concern;Endemic;Selected by author to be illustrated
 
|special status=Conservation concern;Endemic;Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V3/V3_625.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_625.xml
 
|genus=Magnolia
 
|genus=Magnolia
 
|species=Magnolia ashei
 
|species=Magnolia ashei
|2n chromosome quantity=38
 
|apex shape=acute;short-acuminate
 
|aril coloration=orange-red
 
|bark architecture or pubescence or relief=smooth
 
|bark coloration=dark gray
 
|base shape=truncate;deeply cordate or auriculate
 
|beak architecture=spathaceous
 
|beak quantity=2
 
|filament coloration=white
 
|flower architecture or arrangement or growth form=often;solitary
 
|flower atypical some measurement=38cm;50cm
 
|flower odor=fragrant
 
|flower some measurement=15cm;38cm
 
|foliar bud pubescence=silky-pubescent
 
|follicetum length=2.5cm;6.5cm
 
|follicetum shape=cylindric;nearly ovoid
 
|follicetum width=1.5cm;4cm
 
|follicle architecture or shape=short-beaked
 
|follicle fixation or orientation=appressed
 
|follicle pubescence=silky-pubescent
 
|inner bract pubescence=glabrous
 
|innermost whorl coloration=purple-blotched
 
|leaf arrangement=crowded
 
|leaf-blade atypical length=46cm;56cm
 
|leaf-blade atypical width=30cm;40cm
 
|leaf-blade length=25cm;46cm
 
|leaf-blade shape=broadly elliptic;obovate-oblong
 
|leaf-blade width=15cm;30cm
 
|outer bract coloration=rusty gray
 
|outermost segment coloration=greenish
 
|outermost segment orientation=reflexed
 
|pistil quantity=20;50
 
|pith variability=homogeneous
 
|seed shape=globose;lenticular to somewhat
 
|seed some measurement=8mm;10mm
 
|stamen quantity=170;350
 
|stamen some measurement=13mm;20mm
 
|stipule architecture or function or pubescence=glandular
 
|stipule length=6cm;8cm
 
|stipule pubescence=pilose
 
|stipule width=3cm;4cm
 
|surface coloration=green;pale green;chalky white
 
|surface depth=deep
 
|surface pubescence=glabrous;pilose;glaucous
 
|tepal architecture or function or pubescence=glandular
 
|tepal coloration=creamy white
 
|terminal cluster arrangement=whorl-like
 
|tree atypical some measurement=10m;12m
 
|tree duration=deciduous
 
|tree some measurement=0m;10m
 
|twig arrangement=adjacent
 
|twig pubescence=silky-pubescent
 
 
}}<!--
 
}}<!--
  
 
-->[[Category:Treatment]][[Category:Magnolia]]
 
-->[[Category:Treatment]][[Category:Magnolia]]

Revision as of 14:45, 27 July 2019

Trees, deciduous, often multitrunked, to 10(-12) m. Bark dark gray, smooth. Pith homogeneous. Twigs and foliar buds silky-pubescent. Leaves crowded in terminal whorl-like clusters; stipules 6-8 × 3-4 cm, abaxially pilose, glandular. Leaf blade broadly elliptic to obovate-oblong, (17-)25-46(-56) × (10-)15-30(-40) cm, base truncate to deeply cordate or auriculate, apex acute to short-acuminate; surfaces abaxially chalky white or pale green to glaucous, pilose, adaxially deep green, glabrous. Flowers solitary or often in pairs on adjacent twigs, fragrant, 15-38(-50) cm across; spathaceous bracts 2, outer bract abaxially rusty gray, inner bract glabrous; tepals creamy white, glandular, innermost whorl purple-blotched at base, outermost segments strongly reflexed, greenish; stamens 170-350, 13-20 mm; filaments white; pistils 20-50. Follicetums cylindric to nearly ovoid, 2.5-6.5 × 1.5-4 cm; follicles short-beaked, distally appressed silky-pubescent. Seeds lenticular to somewhat globose, 8-10 mm, aril orange-red. 2n=38.


Phenology: Flowering spring.
Habitat: Woodlands, ravines, and bluffs, coastal plain
Elevation: 0-50m

Discussion

Of conservation concern.

Magnolia ashei, the rarest species of Magnolia in the flora, is limited to six counties in the Florida panhandle; it is in danger of extirpation because of habitat disturbance. Magnolia ashei differs from M. macrophylla in being a smaller, often multitrunked tree with smaller leaves, fewer stamens and pistils, smaller seeds, smaller stipules, filiform trichomes, and smaller, nearly glabrous, cylindric follicetums. The flowers are often borne in pairs. Magnolia ashei flowers at an early age (three to four years from seed); it is a desirable small tree in cultivation.

Selected References

None.

Lower Taxa

None.