View source for Drosera anglica

{{Treatment/ID
|accepted_name=Drosera anglica
|accepted_authority=Hudson
|publications={{Treatment/Publication
|title=Fl. Angl. ed.
|place=2, 1: 135. 1778
|year=1778
}}
|common_names=Great or English sundew;droséra d’Angleterre
|basionyms=
|synonyms=
|hierarchy=Droseraceae;Drosera;Drosera anglica
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Droseraceae]]</div><div class="higher-taxon"><small>genus</small>[[Drosera]]</div><div class="higher-taxon"><small>species</small>[[Drosera anglica]]</div></div>
|volume=Volume 6
|mention_page=page 421, 424, 425
|treatment_page=page 422
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form;rosette diameter"><b>Plants </b>forming winter hibernaculae, rosettes 2–6 cm diam.;</span> <span class="statement" id="st-d0_s1" data-properties="stem base architecture">stem base not bulbous-cormose.</span> <span class="statement" id="st-d0_s2" data-properties="leaf orientation"><b>Leaves </b>erect;</span> <span class="statement" id="st-d0_s3" data-properties="stipule fusion;stipule some measurement;margin shape">stipules entirely adnate to petioles, 5 mm, margins fimbriate along distal 1/2;</span> <span class="statement" id="st-d0_s4" data-properties="petiole variability;petiole some measurement;petiole pubescence;petiole pubescence">petiole differentiated from blade, 3–7 cm, glabrous or sparsely glandular-hairy;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade atypical length;blade length;blade width">blade obovate to elongate-spatulate, 1.5–3.5 (–5) cm × 3–7 mm.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence architecture"><b>Inflorescences </b>1–12-flowered;</span> <span class="statement" id="st-d0_s7" data-properties="scape some measurement;scape pubescence">scapes 3–25 cm, glabrous.</span> <span class="statement" id="st-d0_s8" data-properties="flower diameter"><b>Flowers </b>8–10 mm diam.;</span> <span class="statement" id="st-d0_s9" data-properties="sepal fusion;sepal shape;sepal length;sepal width;sepal shape">sepals connate basally, oblong, 5–6 × 4–5 mm, minutely glandular-denticulate;</span> <span class="statement" id="st-d0_s10" data-properties="petal coloration;petal coloration;petal shape;petal length;petal width">petals usually white, rarely pinkish, spatulate, 5–6 × 2–3.5 mm.</span> <span class="statement" id="st-d0_s11" data-properties="capsule some measurement;capsule relief or shape"><b>Capsules </b>4–6 mm, minutely tuberculose.</span> <span class="statement" id="st-d0_s12" data-properties=""><b>Seeds </b>black, sigmoid-fusiform, 1–1.5 mm, length 1–2 times width, longitudinally striate-areolate.</span> <span class="statement" id="st-d0_s13" data-properties="seed coloration;seed shape;seed some measurement;seed l w ratio;seed architecture or relief;2n chromosome quantity">2n = 40.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Marly shores, fens, drainage tracks in peat bogs
|elevation=10–2600 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;Ont.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Idaho;Maine;Mich.;Minn.;Mont.;Oreg.;Wash.;Wis.;Wyo.;Eurasia;Pacific Islands (Hawaii)
|discussion=<p>Drosera anglica is a boreal species that occurs on calcareous substrates. It often grows with D. rotundifolia in peat bogs, and with D. linearis and D. rotundifolia in marl fens, especially in the Great Lakes region. C. E. Wood Jr. (1955) presented a strong case for the hybrid origin of D. anglica, suggesting that it arose as a fertile amphiploid hybrid between D. rotundifolia and D. linearis. It is the only tetraploid North American species of Drosera with 2n = 40. The sterile hybrid D. rotundifolia × D. linearis may be found whenever these species grow together. To avoid confusion, and because a formal name for the sterile hybrid has not been published, it should not be called Drosera ×anglica Hudson, as is commonly done. According to D. E. Schnell (2002), the fertile species may be distinguished from the sterile hybrid by its wider flowers (8–10 mm versus 6–7 mm) and wider scapes (1.5–2 mm versus 1–1.2 mm).</p><!--
--><p>The hybrid between Drosera rotundifolia and D. anglica is a sterile triploid, and has been formally named Drosera ×obovata Mertens & W. D. J. Koch.</p><!--
--><p>Because Drosera longifolia Linnaeus cannot be convincingly typified and has been so often used for plants of D. anglica and D. intermedia in the literature (F. E. Wynne 1944), the name D. longifolia has been rejected as ambiguous.</p><!--
--><p>Drosera anglica is found in the Aalakai Swamp at 1500–2000 meters on the Hawaiian island of Kauai (perhaps brought by migrating birds from Alaska); it is otherwise found in cold northern climates. D. E. Schnell (2002), who has grown the Kauai plants from seed, postulated that the high elevation provides a cooler temperature, and noted that plants from there do not form winter hibernaculae but only smaller winter rosettes.</p>
|tables=
|references={{Treatment/Reference
|id=wood1955a
|text=Wood, C. E. Jr. 1955. Evidence for the hybrid origin of Drosera anglica. Rhodora 57: 105–130.
}}
}}<!--

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-->{{#Taxon:
name=Drosera anglica
|authority=Hudson
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Droseraceae
|phenology=Flowering Jun–Aug.
|habitat=Marly shores, fens, drainage tracks in peat bogs
|elevation=10–2600 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;Ont.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Idaho;Maine;Mich.;Minn.;Mont.;Oreg.;Wash.;Wis.;Wyo.;Eurasia;Pacific Islands (Hawaii)
|reference=wood1955a
|publication title=Fl. Angl. ed.
|publication year=1778
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V6/V6_796.xml
|genus=Drosera
|species=Drosera anglica
|2n chromosome quantity=40
|blade atypical length=3.5cm;5cm
|blade length=1.5cm;3.5cm
|blade shape=obovate;elongate-spatulate
|blade width=3mm;7mm
|capsule relief or shape=tuberculose
|capsule some measurement=4mm;6mm
|flower diameter=8mm;10mm
|inflorescence architecture=1-12-flowered
|leaf orientation=erect
|margin shape=fimbriate
|petal coloration=pinkish;white
|petal length=5mm;6mm
|petal shape=spatulate
|petal width=2mm;3.5mm
|petiole pubescence=glandular-hairy;glabrous
|petiole some measurement=3cm;7cm
|petiole variability=differentiated
|rosette diameter=2cm;6cm
|scape pubescence=glabrous
|scape some measurement=3cm;25cm
|seed architecture or relief=striate-areolate
|seed coloration=black
|seed l w ratio=1-2
|seed shape=sigmoid-fusiform
|seed some measurement=1mm;1.5mm
|sepal fusion=connate
|sepal length=5mm;6mm
|sepal shape=glandular-denticulate;oblong
|sepal width=4mm;5mm
|stem base architecture=not bulbous-cormose
|stipule fusion=adnate
|stipule some measurement=5
|whole_organism growth form=plant
}}<!--

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