View source for Juglans hindsii

{{Treatment/ID
|accepted_name=Juglans hindsii
|accepted_authority=Jepson ex R. E. Smith
|publications={{Treatment/Publication
|title=Univ. Calif. Agric. Exp. Sta. Bull.
|place=203: 27. 1909
|year=1909
}}
|common_names=Northern California walnut;Hinds's black walnut
|special_status={{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Juglans californica var. hindsii
|authority=Jepson
}}
|hierarchy=Juglandaceae;Juglans;Juglans hindsii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Juglandaceae]]</div><div class="higher-taxon"><small>genus</small>[[Juglans]]</div><div class="higher-taxon"><small>species</small>[[Juglans hindsii]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="tree some measurement"><b>Trees,</b> 6-23 m.</span> <span class="statement" id="st-d0_s1" data-properties="bark coloration;bark coloration;bark coloration;plate architecture or pubescence or relief;plate architecture or pubescence"><b>Bark </b>light or medium gray, split into smooth or ± scaly plates.</span> <span class="statement" id="st-d0_s2" data-properties="twig architecture;distal edge shape;band prominence"><b>Twigs </b>with distal edge of leaf-scar shallowly to deeply notched, not bordered by well-defined band of pubescence;</span> <span class="statement" id="st-d0_s3" data-properties="pith coloration">pith light-brown.</span> <span class="statement" id="st-d0_s4" data-properties="terminal bud shape;terminal bud shape;terminal bud shape;terminal bud shape;terminal bud some measurement"><b>Terminal </b>buds ellipsoid to oblong, flattened, 6-8 mm.</span> <span class="statement" id="st-d0_s5" data-properties="leaf some measurement"><b>Leaves </b>22-45 cm;</span> <span class="statement" id="st-d0_s6" data-properties="petiole some measurement">petiole 3-8 cm.</span> <span class="statement" id="st-d0_s7" data-properties="leaflet quantity;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet atypical length;leaflet length;leaflet atypical width;leaflet width;margin architecture or shape;apex shape"><b>Leaflets </b>13-21, narrowly triangular to lanceolate, symmetric or weakly falcate, (5.6-) 7.3-13 × (1-) 1.9-2.8 cm, margins serrate, apex acuminate;</span> <span class="statement" id="st-d0_s8" data-properties="surface pubescence;surface pubescence;gland count or density;gland count or density;gland arrangement;capitate-glandular hair count or density;capitate-glandular hair quantity;capitate-glandular hair arrangement;vein size;hair architecture or arrangement;hair arrangement or pubescence;hair pubescence;hair pubescence;blade arrangement;scale arrangement;vein size;vein pubescence;vein pubescence;scattering count or density;capitate-glandular hair quantity;hair architecture">surfaces abaxially glabrous or with sparse glands, sparse glands and few capitate-glandular hairs scattered along major veins, fasciculate hairs conspicuously tufted in axils of proximal veins, sometimes also on adjacent blade and edges of midrib, adaxially glabrous or with scattered scales, major veins glabrous or with sparse scattering of glands and few capitate-glandular hairs, without nonglandular hairs;</span> <span class="statement" id="st-d0_s9" data-properties="terminal leaflet development">terminal leaflet well developed.</span> <span class="statement" id="st-d0_s10" data-properties="catkin architecture;catkin some measurement"><b>Staminate </b>catkins 6-15 cm;</span> <span class="statement" id="st-d0_s11" data-properties="stamen quantity">stamens 20-40 per flower;</span> <span class="statement" id="st-d0_s12" data-properties="pollen-sac distance">pollen-sacs 1-1.4 mm.</span> <span class="statement" id="st-d0_s13" data-properties="fruit quantity;fruit shape;fruit some measurement"><b>Fruits </b>1-2, globose, 3.5-5 cm;</span> <span class="statement" id="st-d0_s14" data-properties="nut shape;nut shape;nut shape;nut some measurement;nut architecture or pubescence or relief;nut architecture or pubescence or relief;nut shape;nut architecture">nuts ovoid to ovoid-globose, 2.4-3.2 cm, smooth or nearly so or shallowly and indistinctly ridged or grooved.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring (Apr–May).
|habitat=Along streams, sometimes on disturbed slopes
|elevation=0-300 m
|distribution=Calif.
|discussion=<p>Of conservation concern.</p><!--
--><p>Before 1850, Juglans hindsii was restricted to a few locations (J. R. Griffin and W. B. Critchfield 1972). It has been widely used as a rootstock for grafting J. regia and has been planted extensively in many parts of California for this purpose. It is now naturalized in many areas where it apparently did not occur before the introduction of commercial walnut growing. Possibly some of these naturalized populations are introgressed with J. nigra, since spontaneous hybridization between J. hindsii and J. nigra has been reported in areas where both species have been planted. These hybrids are difficult to distinguish from J. hindsii unless fruit are present. Currently most commercial walnut orchards use hybrid rootstocks, usually J. hindsii × J. regia (G. H. McGranahan and P. B. Catlin 1987).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Juglans hindsii
|author=
|authority=Jepson ex R. E. Smith
|rank=species
|parent rank=genus
|synonyms=Juglans californica var. hindsii
|basionyms=
|family=Juglandaceae
|phenology=Flowering spring (Apr–May).
|habitat=Along streams, sometimes on disturbed slopes
|elevation=0-300 m
|distribution=Calif.
|reference=None
|publication title=Univ. Calif. Agric. Exp. Sta. Bull.
|publication year=1909
|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_364.xml
|genus=Juglans
|species=Juglans hindsii
|apex shape=acuminate
|band prominence=well-defined
|bark coloration=gray;medium;light
|blade arrangement=adjacent
|capitate-glandular hair arrangement=scattered
|capitate-glandular hair count or density=sparse
|capitate-glandular hair quantity=few;few
|catkin architecture=staminate
|catkin some measurement=6cm;15cm
|distal edge shape=notched
|fruit quantity=1;2
|fruit shape=globose
|fruit some measurement=3.5cm;5cm
|gland arrangement=scattered
|gland count or density=sparse;sparse
|hair architecture=eglandular
|hair architecture or arrangement=fasciculate
|hair arrangement or pubescence=tufted
|hair pubescence=with scattered scales;glabrous
|leaf some measurement=22cm;45cm
|leaflet atypical length=5.6cm;7.3cm
|leaflet atypical width=1cm;1.9cm
|leaflet length=7.3cm;13cm
|leaflet quantity=13;21
|leaflet shape=narrowly triangular;lanceolate symmetric or weakly falcate
|leaflet width=1.9cm;2.8cm
|margin architecture or shape=serrate
|nut architecture=grooved
|nut architecture or pubescence or relief=nearly;smooth
|nut shape=ridged;ovoid;ovoid-globose
|nut some measurement=2.4cm;3.2cm
|petiole some measurement=3cm;8cm
|pith coloration=light-brown
|plate architecture or pubescence=scaly
|plate architecture or pubescence or relief=smooth
|pollen-sac distance=1mm;1.4mm
|scale arrangement=scattered
|scattering count or density=sparse
|stamen quantity=20;40
|surface pubescence=with sparse glands;glabrous
|terminal bud shape=flattened;ellipsoid;oblong
|terminal bud some measurement=6mm;8mm
|terminal leaflet development=developed
|tree some measurement=6m;23m
|twig architecture=not bordered
|vein pubescence=with sparse scattering;glabrous
|vein size=major;major
}}<!--

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