View source for Thelia ← Thelia You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Thelia |accepted_authority=Sullivant in A. Gray |publications={{Treatment/Publication |title=in A. Gray, Manual ed. |place=2, 660. 1856 |year=1856 }} |basionyms= |synonyms= |hierarchy=Theliaceae;Thelia |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Theliaceae]]</div><div class="higher-taxon"><small>genus</small>[[Thelia]]</div></div> |etymology=Greek thele, nipple, alluding to prominent leaf papillae |volume=Volume 28 |mention_page=page 637, 639, 648 |treatment_page=page 638 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole_organism size;whole_organism growth form"><b>Plants </b>small to medium-sized.</span> <span class="statement" id="st-d0_s1" data-properties="stem architecture;stem architecture;branch orientation;branch architecture;branch architecture"><b>Stems </b>1-pinnate or irregularly branched, branches erect-ascending, simple or irregularly branched;</span> <span class="statement" id="st-d0_s2" data-properties="epidermal-cell shape">epidermal-cells elongate;</span> <span class="statement" id="st-d0_s3" data-properties="rhizoid coloration;rhizoid architecture;rhizoid architecture or pubescence or relief">rhizoids reddish-brown, densely branched, smooth.</span> <span class="statement" id="st-d0_s4" data-properties="leaf shape"><b>Leaves </b>deltoid-ovate;</span> <span class="statement" id="st-d0_s5" data-properties="base shape">base decurrent;</span> <span class="statement" id="st-d0_s6" data-properties="apex shape;apex condition or size;acumen length or size;acumen shape;acumen shape">apex broadly acute to obtuse, abruptly contracted, acumen long, apiculate or piliferous;</span> <span class="statement" id="st-d0_s7" data-properties="costa quantity;costa quantity;costa quantity">costa single or sometimes double, 1/2–3/4 leaf length, sometimes spurred or 2-fid;</span> <span class="statement" id="st-d0_s8" data-properties="leaf length;leaf length;cell shape;cell shape">alar cells quadrate or subrectangular;</span> <span class="statement" id="st-d0_s9" data-properties="laminal cell shape;laminal cell relief;papilla shape;papilla architecture;papilla architecture">laminal cells rhombic to fusiform, stoutly 1-papillose abaxially, papillae columnar, simple or 3–6-branched.</span> <span class="statement" id="st-d0_s10" data-properties="seta coloration;seta coloration;seta course;seta architecture or pubescence or relief"><b>Seta </b>yellowish when young, red when mature, flexuose when dry, smooth.</span> <span class="statement" id="st-d0_s11" data-properties="capsule shape;capsule architecture or shape;capsule course;capsule relief"><b>Capsule </b>cylindric to ovoid-cylindric, symmetric to somewhat curved, smooth to weakly wrinkled when dry;</span> <span class="statement" id="st-d0_s12" data-properties="mouth shape;proximal cell shape;proximal cell size;proximal cell coloration;wall width">exothecial cells at mouth oblate to quadrate, proximal cells quadrate to short-rectangular, enlarged, red, walls thin to thick;</span> <span class="statement" id="st-d0_s13" data-properties="">stomata on neck;</span> <span class="statement" id="st-d0_s14" data-properties="annulus prominence;annulus duration;annulus architecture or arrangement;annulus architecture or arrangement;cell-wall width">annulus rudimentary, persistent, 2-seriate or 3-seriate, cell-walls thin;</span> <span class="statement" id="st-d0_s15" data-properties="operculum shape">operculum conic-subulate;</span> <span class="statement" id="st-d0_s16" data-properties="exostome tooth fusion;exostome tooth coloration;exostome tooth arrangement or course or shape;membrane height or length or size;membrane architecture or pubescence or relief;external surface architecture or pubescence or relief;external surface relief;trabecula size or width;median line size or width;internal surface relief;trabecula fragility">exostome teeth united at base on short, smooth membrane, white, linear, external surface smooth basally, finely papillose distally, trabeculae and median line thickened, internal surface lightly papillose, trabeculae weak;</span> <span class="statement" id="st-d0_s17" data-properties="endostome prominence;endostome coloration;endostome relief;basal membrane position;basal membrane height;segment size;cilium quantity;cilium quantity;cilium length;cilium presence">endostome rudimentary, white, lightly papillose, basal membrane low or high, segments reduced to stubs or to 1/2 exostome length, cilia 1 or 2, nublike or absent.</span> <span class="statement" id="st-d0_s18" data-properties="spore relief"><b>Spores </b>smooth to lightly papillose.</span><!-- -->{{Treatment/Body |distribution=North America;ne Mexico;West Indies (Dominican Republic) |discussion=<p>Species 3 (3 in the flora).</p><!-- --><p>Thelia is remarkable in its glaucous, bluish green color, thick, densely tomentose mats, and tumid to julaceous stems and branches. The stem leaves are distinctively deltoid-ovate with rhombic cells, simple or 3–6-branched columnar papillae, and frequently long-ciliate margins. The sporophyte has a long seta and typically erect, symmetric, cylindric to ovoid-cylindric capsules. The diplolepidous peristome is yellowish white. The endostome segments and cilia are often reduced to nublike projections on a low or high basal membrane.</p><!-- --><p>In the field, Thelia could be confused with Myurella (Pterigynandraceae) because both genera have terete-foliate stems and branches that occur in mats or cushions, radiculose stems, and a similar color. Myurella rarely occurs in dense mats, and its leaves have short, double costae, serrate or sinuate-dentate margins, and lower, unbranched papillae.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Stem leaf laminal cell papillae simple. |[[Thelia hirtella|Thelia hirtella]] |-id=key-0-1 |1 |Stem leaf laminal cell papillae usually 3-6-branched |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Stems creeping, densely and regularly 1-pinnate, often densely tomentose, branches simple; leaf acumina usually spreading-piliferous. |[[Thelia asprella|Thelia asprella]] |-id=key-0-2 |2 |Stems often ascending, sparsely and irregularly branched, lightly tomentose, branches irregularly branched; leaf acumina erect, apiculate. |[[Thelia lescurii|Thelia lescurii]] |} </div></div><!-- -->{{#Taxon: name=Thelia |authority=Sullivant in A. Gray |rank=genus |parent rank=family |synonyms= |basionyms= |family=Theliaceae |distribution=North America;ne Mexico;West Indies (Dominican Republic) |reference=None |publication title=in A. Gray, Manual ed. |publication year=1856 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V28/V28_1000.xml |genus=Thelia |acumen length or size=long |acumen shape=piliferous;apiculate |annulus architecture or arrangement=3-seriate;2-seriate |annulus duration=persistent |annulus prominence=rudimentary |apex condition or size=contracted |apex shape=broadly acute;obtuse |basal membrane height=high |basal membrane position=low |base shape=decurrent |branch architecture=branched;simple |branch orientation=erect-ascending |capsule architecture or shape=symmetric |capsule course=curved |capsule relief=smooth;weakly wrinkled |capsule shape=cylindric;ovoid-cylindric |cell shape=subrectangular;quadrate |cell-wall width=thin |cilium length=nublike |cilium presence=absent |cilium quantity=2;1 |costa quantity=1/2;3/4 |endostome coloration=white |endostome prominence=rudimentary |endostome relief=papillose |epidermal-cell shape=elongate |exostome tooth arrangement or course or shape=linear |exostome tooth coloration=white |exostome tooth fusion=united |external surface architecture or pubescence or relief=smooth |external surface relief=papillose |internal surface relief=papillose |laminal cell relief=1-papillose |laminal cell shape=rhombic;fusiform |leaf length=2-fid;spurred |leaf shape=deltoid-ovate |median line size or width=thickened |membrane architecture or pubescence or relief=smooth |membrane height or length or size=short |mouth shape=oblate;quadrate |operculum shape=conic-subulate |papilla architecture=3-6-branched;simple |papilla shape=columnar |proximal cell coloration=red |proximal cell shape=quadrate;short-rectangular |proximal cell size=enlarged |rhizoid architecture=branched |rhizoid architecture or pubescence or relief=smooth |rhizoid coloration=reddish-brown |segment size=reduced |seta architecture or pubescence or relief=smooth |seta coloration=red;yellowish |seta course=flexuose |spore relief=smooth;lightly papillose |stem architecture=branched;1-pinnate |trabecula fragility=weak |trabecula size or width=thickened |wall width=thin;thick |whole_organism growth form=plant |whole_organism size=small;medium-sized }}<!-- -->[[Category:Treatment]][[Category:Theliaceae]] Templates used on this page: Template:Theliaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Return to Thelia.