View source for Thalassia

{{Treatment/ID
|accepted_name=Thalassia
|accepted_authority=Banks & Solander ex K. D. König
|publications={{Treatment/Publication
|title=Annals of Botany
|place=2: 96. 1805
|year=1805
}}
|common_names=Turtle-grass
|basionyms=
|synonyms=
|hierarchy=Hydrocharitaceae;Thalassia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hydrocharitaceae]]</div><div class="higher-taxon"><small>genus</small>[[Thalassia]]</div></div>
|etymology=Greek thalass, sea
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism growth form"><b>Plants </b>perennial, of marine waters.</span> <span class="statement" id="st-d0_s1" data-properties="rhizome presence"><b>Rhizomes </b>present;</span> <span class="statement" id="st-d0_s2" data-properties="branch architecture;branch orientation;internode quantity">leaf-bearing branches arising from rhizomes at distances of several internodes;</span> <span class="statement" id="st-d0_s3" data-properties="stolon presence">stolons absent.</span> <span class="statement" id="st-d0_s4" data-properties="stem orientation;stem architecture;stem architecture;stem height or length or size"><b>Erect </b>stems rooted in substrate, unbranched, short.</span> <span class="statement" id="st-d0_s5" data-properties="leaf quantity;basal leaf location;basal leaf architecture"><b>Leaves </b>2–6, basal, submersed, sessile;</span> <span class="statement" id="st-d0_s6" data-properties="blade arrangement or course or shape;base shape">blade linear, base tapering to stem;</span> <span class="statement" id="st-d0_s7" data-properties="apex shape">apex obtuse;</span> <span class="statement" id="st-d0_s8" data-properties="">midvein without lacunae along side (s), blade uniform in color throughout;</span> <span class="statement" id="st-d0_s9" data-properties="blade coloration;blade position">abaxial surfacely without prickles;</span> <span class="statement" id="st-d0_s10" data-properties="intravaginal scale architecture or shape">intravaginal scales entire.</span> <span class="statement" id="st-d0_s11" data-properties="inflorescence architecture;inflorescence architecture"><b>Inflorescences </b>1-flowered to cymose, pedunculate;</span> <span class="statement" id="st-d0_s12" data-properties="spathe architecture">spathes not winged.</span> <span class="statement" id="st-d0_s13" data-properties="flower reproduction;flower architecture;flower architecture;flower location;flower architecture"><b>Flowers </b>unisexual, staminate and pistillate on different plants, submersed, short-pedicellate to nearly sessile;</span> <span class="statement" id="st-d0_s14" data-properties="petal presence">petals absent.</span> <span class="statement" id="st-d0_s15" data-properties="flower architecture;filament fusion"><b>Staminate </b>flowers: filaments distinct;</span> <span class="statement" id="st-d0_s16" data-properties="flower architecture;anther arrangement or course or shape">anthers linear;</span> <span class="statement" id="st-d0_s17" data-properties="flower architecture;matrix texture;chain shape">pollen embedded in gelatinous matrix, in moniliform chains.</span> <span class="statement" id="st-d0_s18" data-properties="flower architecture;ovary architecture or structure in adjective form"><b>Pistillate </b>flowers: ovary 1-locular;</span> <span class="statement" id="st-d0_s19" data-properties="flower architecture;style quantity;style shape">styles 6–8, not 2-fid.</span> <span class="statement" id="st-d0_s20" data-properties="fruit shape;fruit architecture;fruit dehiscence;valve quantity;valve architecture or course"><b>Fruits </b>spheric, echinate, dehiscing into 6–8 irregular valves.</span> <span class="statement" id="st-d0_s21" data-properties="seed shape"><b>Seeds </b>pyriform;</span> <span class="statement" id="st-d0_s22" data-properties="seed-coat duration">seed-coat ephemeral.</span><!--

-->{{Treatment/Body
|distribution=North America;Central America;Africa;Asia;Australia
|discussion=<p>Species 2 (1 in flora).</p>
|tables=
|references={{Treatment/Reference
|id=grey1978a
|text=Grey, W. F. and M. D. Moffler. 1978. Flowering of the seagrass Thalassia testudinum (Hydrocharitaceae) in the Tampa Bay, Florida area. Aquatic Bot. 5: 251--259.
}}{{Treatment/Reference
|id=moffler1981a
|text=Moffler, M. D., M. J. Durako, and W. F. Grey. 1981. Observations on the reproductive ecology of Thalassia testudinum (Hydrocharitaceae) in Tampa Bay, Florida. Aquatic Bot. 10: 183--187.
}}{{Treatment/Reference
|id=moore1963c
|text=Moore, D. R. 1963. Distribution of the sea grass, Thalassia, in the United States. Bull. Mar. Sci. Gulf Caribbean 13: 329--342.
}}{{Treatment/Reference
|id=orpurt1964a
|text=Orpurt, P. R. and L. L. Boral. 1964. The flowers and seeds of Thalassia testudinum König. Bull. Mar. Sci. Gulf Caribbean 14: 296--302.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Thalassia
|authority=Banks & Solander ex K. D. König
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Hydrocharitaceae
|distribution=North America;Central America;Africa;Asia;Australia
|reference=grey1978a;moffler1981a;moore1963c;orpurt1964a
|publication title=Annals of Botany
|publication year=1805
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/62857cf6bca5c4637d27b113da92d27dbf9962f4/V22/V22_612.xml
|genus=Thalassia
|anther arrangement or course or shape=linear
|apex shape=obtuse
|basal leaf architecture=sessile
|basal leaf location=submersed
|base shape=tapering
|blade arrangement or course or shape=linear
|blade coloration=uniform
|blade position=abaxial
|branch architecture=leaf-bearing
|branch orientation=arising
|chain shape=moniliform
|filament fusion=distinct
|flower architecture=pistillate;pistillate;staminate;staminate;staminate;short-pedicellate;nearly sessile
|flower location=submersed
|flower reproduction=unisexual
|fruit architecture=echinate
|fruit dehiscence=dehiscing
|fruit shape=spheric
|inflorescence architecture=pedunculate;1-flowered;cymose
|internode quantity=several
|intravaginal scale architecture or shape=entire
|leaf quantity=2;6
|matrix texture=gelatinous
|ovary architecture or structure in adjective form=1-locular
|petal presence=absent
|rhizome presence=absent
|seed shape=pyriform
|seed-coat duration=ephemeral
|spathe architecture=not winged
|stem architecture=unbranched;rooted
|stem height or length or size=short
|stem orientation=erect
|stolon presence=absent
|style quantity=6;8
|style shape=not 2-fid
|valve architecture or course=irregular
|valve quantity=6;8
|whole_organism duration=perennial
|whole_organism growth form=plant
}}<!--

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