Difference between revisions of "Hexastylis contracta"

H. L. Blomquist

Brittonia 8: 279. 1957.

Endemic
Synonyms: Asarum contractum (H. L. Blomquist) Barringer
Treatment appears in FNA Volume 3.
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--><span class="statement" id="st-d0_s0" data-properties="internode height or length or size;leaf arrangement"><b>Rhizomes:</b> internodes short, leaves crowded at rhizome apex.</span> <span class="statement" id="st-d0_s1" data-properties="leaf-blade shape"><b>Leaf-</b>blade rarely variegate, orbiculate-cordate;</span> <span class="statement" id="st-d0_s2" data-properties="calyx-tube shape;calyx-tube shape;calyx-tube length;calyx-tube width;constriction prominence;inner surface development;reticulation presence;ridge height;lobe orientation;lobe orientation;lobe orientation;lobe length;lobe width;lobe pubescence">calyx-tube rhombic-ovoid, conspicuously tapered above middle, with prominent constrictions just above base and just below sinuses, 15-27 × 12-17 mm, inner surface with reticulations absent or poorly developed, ridges 0-1 mm high, lobes erect to spreading, 4-5 × 7-8 mm, adaxially puberulent;</span> <span class="statement" id="st-d0_s3" data-properties="">stamen connective extending beyond pollen-sacs;</span> <span class="statement" id="st-d0_s4" data-properties="">ovary ca. 1/3-inferior;</span> <span class="statement" id="st-d0_s5" data-properties="ovule quantity">ovules 6 per locule;</span> <span class="statement" id="st-d0_s6" data-properties="style architecture or shape;style position">styles 2-cleft halfway to stigma.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Rhizomes:</b> internodes short, leaves crowded at rhizome apex. <b>Leaf</b> blade rarely variegate, orbiculate-cordate; calyx tube rhombic-ovoid, conspicuously tapered above middle, with prominent constrictions just above base and just below sinuses, 15-27 × 12-17 mm, inner surface with reticulations absent or poorly developed, ridges 0-1 mm high, lobes erect to spreading, 4-5 × 7-8 mm, adaxially puberulent; stamen connective extending beyond pollen sacs; ovary ca. 1/3-inferior; ovules 6 per locule; styles 2-cleft halfway to stigma.</span><!--
  
 
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|publication year=1957
 
|publication year=1957
 
|special status=Endemic
 
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V3/V3_619.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_619.xml
 
|genus=Hexastylis
 
|genus=Hexastylis
 
|species=Hexastylis contracta
 
|species=Hexastylis contracta
|calyx-tube length=15mm;27mm
 
|calyx-tube shape=tapered;rhombic-ovoid
 
|calyx-tube width=12mm;17mm
 
|constriction prominence=prominent
 
|inner surface development=developed
 
|internode height or length or size=short
 
|leaf arrangement=crowded
 
|leaf-blade shape=orbiculate-cordate
 
|lobe length=4mm;5mm
 
|lobe orientation=erect;spreading
 
|lobe pubescence=puberulent
 
|lobe width=7mm;8mm
 
|ovule quantity=6
 
|reticulation presence=absent
 
|ridge height=0mm;1mm
 
|style architecture or shape=2-cleft
 
|style position=halfway
 
 
}}<!--
 
}}<!--
  
 
-->[[Category:Treatment]][[Category:Hexastylis]]
 
-->[[Category:Treatment]][[Category:Hexastylis]]

Revision as of 13:45, 27 July 2019

Rhizomes: internodes short, leaves crowded at rhizome apex. Leaf blade rarely variegate, orbiculate-cordate; calyx tube rhombic-ovoid, conspicuously tapered above middle, with prominent constrictions just above base and just below sinuses, 15-27 × 12-17 mm, inner surface with reticulations absent or poorly developed, ridges 0-1 mm high, lobes erect to spreading, 4-5 × 7-8 mm, adaxially puberulent; stamen connective extending beyond pollen sacs; ovary ca. 1/3-inferior; ovules 6 per locule; styles 2-cleft halfway to stigma.


Phenology: Flowering spring (May–Jun).
Habitat: Acid soils in deciduous forests, with Kalmia and Rhododendron
Elevation: 300-1000 m

Discussion

The distribution of Hexastylis contracta is unique; it is disjunct between the Cumberland Plateau of central Tennessee and Kentucky and the southeastern Blue Ridge Province of western North Carolina.

Selected References

None.

Lower Taxa

None.