Show Lower Taxa
Difference between revisions of "Botrychium sect. Hiemobotrychium"
Novon 2: 267. 1992.
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Roots </b>20–30, yellow to brown, 0.6–1 mm diam. 1cm from base. <b>Plants</b> over 6 cm. <b>Common</b> stalk with tracheidal idioblasts. <b>Trophophore</b> short-stalked and prostrate, arising from basal portion of common stalk near ground level; blades usually 2 per plant, appearing in late fall and dying in early spring, deltate, 2–3-pinnate, mostly 5–8 cm wide when mature, herbaceous. <b>Leaf</b> primordia with scattered hairs, hairs 0.6–1 mm. <b>Leaf</b> sheath closed. <b>Pinna</b> divisions reduced to tip. <b>First</b> pinnule on basal pinnae usually borne basiscopically. <b>Sporophores</b> long-stalked, arising from basal portion of common stalk near ground level, commonly absent without primordia; stalks and rachis broadly flattened, fleshy, to 1.4 mm wide. <b>x</b> =45.</span><!-- |
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|publication year=1992 | |publication year=1992 | ||
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| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_780.xml |
|genus=Botrychium | |genus=Botrychium | ||
|subgenus=Botrychium subg. Sceptridium | |subgenus=Botrychium subg. Sceptridium | ||
|section=Botrychium sect. Hiemobotrychium | |section=Botrychium sect. Hiemobotrychium | ||
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Revision as of 13:27, 27 July 2019
Roots 20–30, yellow to brown, 0.6–1 mm diam. 1cm from base. Plants over 6 cm. Common stalk with tracheidal idioblasts. Trophophore short-stalked and prostrate, arising from basal portion of common stalk near ground level; blades usually 2 per plant, appearing in late fall and dying in early spring, deltate, 2–3-pinnate, mostly 5–8 cm wide when mature, herbaceous. Leaf primordia with scattered hairs, hairs 0.6–1 mm. Leaf sheath closed. Pinna divisions reduced to tip. First pinnule on basal pinnae usually borne basiscopically. Sporophores long-stalked, arising from basal portion of common stalk near ground level, commonly absent without primordia; stalks and rachis broadly flattened, fleshy, to 1.4 mm wide. x =45.
Distribution
Endemic to se United States.
Discussion
Tracheidal idioblasts in Botrychium sect. Hiemobotrychium are enormous, elongate, spindle-shaped cells with helical or annular thickenings and are scattered along the vascular strand. They are unique among ferns.
Species 1.
Selected References
None.