Show Lower Taxa
Difference between pages "Euchiton" and "Orcuttia"
Treatment appears in FNA Volume 25. Treatment on page 290.
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| − | |accepted_name= | + | |accepted_name=Orcuttia |
| − | |accepted_authority= | + | |accepted_authority=Vasey |
| − | |publications= | + | |publications= |
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|basionyms= | |basionyms= | ||
|synonyms= | |synonyms= | ||
| − | |hierarchy= | + | |hierarchy=Poaceae;Poaceae subfam. Chloridoideae;Poaceae tribe Orcuttieae;Orcuttia |
| − | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[ | + | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Chloridoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Orcuttieae]]</div><div class="higher-taxon"><small>genus</small>[[Orcuttia]]</div></div> |
| − | + | |volume=Volume 25 | |
| − | |volume=Volume | + | |mention_page= |
| − | |mention_page= | + | |treatment_page=page 290 |
| − | |treatment_page=page | ||
}}<!-- | }}<!-- | ||
| − | --><span class="statement" id="st-undefined" data-properties=""><b> | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual; viscid-aromatic, pilose, sometimes sparsely so, producing long, juvenile, floating basal leaves. <b>Culms</b> 3-35 cm, erect, ascending, or decumbent, sometimes becoming prostrate, not breaking apart at the nodes, usually branching only at the lower nodes. <b>Leaves</b> without ligules, sometimes with a "collar" line visible at the junction of the sheath and blade, especially when dry; blades flat or becoming involute in drying. <b>Inflorescences</b> terminal, clavate to capitate spikes, exserted at maturity, spikelets distichously arranged; disarticulation tardy, above the glumes and between the florets. <b>Spikelets</b> laterally compressed, with 4-40 florets. <b>Glumes</b> irregularly 2-5-toothed; lemmas deeply cleft and strongly 5-veined, veins terminating in prominent mucronate or awn-tipped teeth 1/3 - 1/2 or more as long as the lemma bodies, each tooth with an additional weaker vein on either side of a strong central vein, these extending about halfway to the base of the lemma; paleas well-developed, 2-veined; lodicules absent; anthers 3, white or pinkish, exserted on long, slender, ribbonlike filaments at anthesis; styles 2, apical, elongate, filiform, stigmatic for 1/3 – 1/2 of their length; stigmatic hairs short, often sparse. <b>Caryopses</b> slightly compressed laterally, oblong to elliptic; embryos 3/4 as long as to equaling the caryopses; epiblast absent, x = 10, probably.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| − | |distribution= | + | |distribution=Calif. |
| − | |discussion=<p> | + | |discussion=<p><i>Orcuttia</i> is a genus of five species, all of which are restricted to vernal pools and similar habitats in California and northern Baja California, Mexico.</p> |
|tables= | |tables= | ||
| − | |references= | + | |references= |
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|-id=key-0-1 | |-id=key-0-1 | ||
|1 | |1 | ||
| − | | | + | |Lemma teeth unequal, the central tooth the longest. |
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| − | |||
| − | |||
| − | |||
|[[#key-0-2| > 2]] | |[[#key-0-2| > 2]] | ||
|-id=key-0-2 | |-id=key-0-2 | ||
|2 | |2 | ||
| − | | | + | |Lemmas 6-7 mm long, the teeth terminating in awns at least 1 mm long; caryopses 2.3-2.5 mm long |
| − | |[[ | + | |[[Orcuttia viscida|Orcuttia viscida]] |
|-id=key-0-2 | |-id=key-0-2 | ||
|2 | |2 | ||
| − | | | + | |Lemmas 4-5 mm long, the teeth sharp-pointed or with awns to 0.5 mm long; caryopses 1.3-1.8 mm long. |
| − | |[[ | + | |[[#key-0-3| > 3]] |
| + | |-id=key-0-3 | ||
| + | |3 | ||
| + | |Plants sparingly hairy; culms usually prostrate; spikes clavate | ||
| + | |[[Orcuttia californica|Orcuttia californica]] | ||
| + | |-id=key-0-3 | ||
| + | |3 | ||
| + | |Plants conspicuously hairy, grayish; culms erect or decumbent; spikes somewhat capitate | ||
| + | |[[Orcuttia inaequalis|Orcuttia inaequalis]] | ||
| + | |-id=key-0-1 | ||
| + | |1 | ||
| + | |Lemma teeth essentially equal in length. | ||
| + | |[[#key-0-2| > 2]] | ||
| + | |-id=key-0-4 | ||
| + | |4 | ||
| + | |Culms usually prostrate; caryopses 1.5-1.8 mm long | ||
| + | |[[Orcuttia californica|Orcuttia californica]] | ||
| + | |-id=key-0-4 | ||
| + | |4 | ||
| + | |Culms erect, ascending, or decumbent; caryopses 2-3 mm long. | ||
| + | |[[#key-0-5| > 5]] | ||
| + | |-id=key-0-5 | ||
| + | |5 | ||
| + | |Culms 1-2 mm thick, branching only at the lower nodes; spikes congested, crowded towards the top; leaf blades 3-5 mm wide | ||
| + | |[[Orcuttia pilosa|Orcuttia pilosa]] | ||
| + | |-id=key-0-5 | ||
| + | |5 | ||
| + | |Culms 0.5-1 mm thick, often branching from the upper nodes; spikes not congested, even towards the top; leaf blades 1.5-2 mm wide | ||
| + | |[[Orcuttia tenuis|Orcuttia tenuis]] | ||
|} | |} | ||
</div></div><!-- | </div></div><!-- | ||
-->{{#Taxon: | -->{{#Taxon: | ||
| − | name= | + | name=Orcuttia |
| − | |author= | + | |author=John R. Reeder; |
| − | |authority= | + | |authority=Vasey |
|rank=genus | |rank=genus | ||
|parent rank=tribe | |parent rank=tribe | ||
|synonyms= | |synonyms= | ||
|basionyms= | |basionyms= | ||
| − | |family= | + | |family=Poaceae |
| − | + | |distribution=Calif. | |
| − | |distribution= | + | |reference=None |
| − | + | |publication title= | |
| − | |reference= | + | |publication year= |
| − | |publication title= | ||
| − | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V25/V25_941.xml |
| − | |tribe= | + | |subfamily=Poaceae subfam. Chloridoideae |
| − | |genus= | + | |tribe=Poaceae tribe Orcuttieae |
| + | |genus=Orcuttia | ||
}}<!-- | }}<!-- | ||
| − | -->[[Category:Treatment]][[Category: | + | -->[[Category:Treatment]][[Category:Poaceae tribe Orcuttieae]] |
Revision as of 20:25, 24 September 2019
Plants annual; viscid-aromatic, pilose, sometimes sparsely so, producing long, juvenile, floating basal leaves. Culms 3-35 cm, erect, ascending, or decumbent, sometimes becoming prostrate, not breaking apart at the nodes, usually branching only at the lower nodes. Leaves without ligules, sometimes with a "collar" line visible at the junction of the sheath and blade, especially when dry; blades flat or becoming involute in drying. Inflorescences terminal, clavate to capitate spikes, exserted at maturity, spikelets distichously arranged; disarticulation tardy, above the glumes and between the florets. Spikelets laterally compressed, with 4-40 florets. Glumes irregularly 2-5-toothed; lemmas deeply cleft and strongly 5-veined, veins terminating in prominent mucronate or awn-tipped teeth 1/3 - 1/2 or more as long as the lemma bodies, each tooth with an additional weaker vein on either side of a strong central vein, these extending about halfway to the base of the lemma; paleas well-developed, 2-veined; lodicules absent; anthers 3, white or pinkish, exserted on long, slender, ribbonlike filaments at anthesis; styles 2, apical, elongate, filiform, stigmatic for 1/3 – 1/2 of their length; stigmatic hairs short, often sparse. Caryopses slightly compressed laterally, oblong to elliptic; embryos 3/4 as long as to equaling the caryopses; epiblast absent, x = 10, probably.
Discussion
Orcuttia is a genus of five species, all of which are restricted to vernal pools and similar habitats in California and northern Baja California, Mexico.
Selected References
None.
Lower Taxa
Key
| 1 | Lemma teeth unequal, the central tooth the longest. | > 2 |
| 2 | Lemmas 6-7 mm long, the teeth terminating in awns at least 1 mm long; caryopses 2.3-2.5 mm long | Orcuttia viscida |
| 2 | Lemmas 4-5 mm long, the teeth sharp-pointed or with awns to 0.5 mm long; caryopses 1.3-1.8 mm long. | > 3 |
| 3 | Plants sparingly hairy; culms usually prostrate; spikes clavate | Orcuttia californica |
| 3 | Plants conspicuously hairy, grayish; culms erect or decumbent; spikes somewhat capitate | Orcuttia inaequalis |
| 1 | Lemma teeth essentially equal in length. | > 2 |
| 4 | Culms usually prostrate; caryopses 1.5-1.8 mm long | Orcuttia californica |
| 4 | Culms erect, ascending, or decumbent; caryopses 2-3 mm long. | > 5 |
| 5 | Culms 1-2 mm thick, branching only at the lower nodes; spikes congested, crowded towards the top; leaf blades 3-5 mm wide | Orcuttia pilosa |
| 5 | Culms 0.5-1 mm thick, often branching from the upper nodes; spikes not congested, even towards the top; leaf blades 1.5-2 mm wide | Orcuttia tenuis |