View source for Draba fladnizensis

{{Treatment/ID
|accepted_name=Draba fladnizensis
|accepted_authority=Wulfen in N. J. Jacquin
|publications={{Treatment/Publication
|title=in N. J. Jacquin, Misc. Austriac.
|place=1: 147, plate 17, fig. 1. 1778
|year=1778
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Draba fladnizensis var. pattersonii
|authority=(O. E. Schulz) Rollins
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba pattersonii
|authority=Hartman
|rank=species
}} {{Treatment/ID/Synonym
|name=Draba pattersonii var. hirticaulis
|authority=O. E. Schulz
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba wahlenbergii
|authority=
|rank=species
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba fladnizensis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Arabideae]]</div><div class="higher-taxon"><small>genus</small>[[Draba]]</div><div class="higher-taxon"><small>species</small>[[Draba fladnizensis]]</div></div>
|volume=Volume 7
|mention_page=page 270, 275, 281, 303, 316, 320
|treatment_page=page 307
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="">Perennials;</span> <span class="statement" id="st-d0_s1" data-properties="whole-organism duration">(sometimes cespitose);</span> <span class="statement" id="st-d0_s2" data-properties="">caudex simple or branched (with persistent leaf-bases);</span> <span class="statement" id="st-d0_s3" data-properties="caudex architecture;caudex architecture;caudex architecture">usually scapose.</span> <span class="statement" id="st-d0_s4" data-properties="stem architecture;stem atypical some measurement;stem atypical some measurement;stem some measurement;stem pubescence"><b>Stems </b>unbranched, (0.2–) 0.3–1 (–1.3) dm, glabrous.</span> <span class="statement" id="st-d0_s5" data-properties="basal leaf arrangement"><b>Basal </b>leaves rosulate;</span> <span class="statement" id="st-d0_s6" data-properties="margin architecture or pubescence or shape">petiole (obscure), margin ciliate, (trichomes simple or 2-rayed, 0.25–0.6 mm);</span> <span class="statement" id="st-d0_s7" data-properties="blade shape;blade atypical length;blade atypical length;blade length;blade atypical width;blade width;margin architecture or shape;margin shape;surface pubescence;surface pubescence;trichome architecture;trichome pubescence">blade linear to oblanceolate or narrowly obovate, (0.3–) 0.4–1.2 (–1.6) cm × 1–3 (–4) mm, margins usually entire, rarely toothed, surfaces abaxially pubescent or glabrous, trichomes simple, sometimes with fewer, short-stalked, 2-rayed ones, (midvein prominent), adaxially often glabrous.</span> <span class="statement" id="st-d0_s8" data-properties=""><b>Cauline </b>leaves 0–2;</span> <span class="statement" id="st-d0_s9" data-properties="cauline leaf quantity;cauline leaf architecture">sessile;</span> <span class="statement" id="st-d0_s10" data-properties="blade shape;margin architecture or shape">blade oblong to ovate, margins entire, (ciliate).</span> <span class="statement" id="st-d0_s11" data-properties="raceme architecture;raceme architecture;flower position;flower architecture;flower length"><b>Racemes </b>(2 or) 3–11 (–14) -flowered, usually ebracteate, rarely proximalmost flowers bracteate, elongated in fruit;</span> <span class="statement" id="st-d0_s12" data-properties="">rachis not flexuous, glabrous.</span> <span class="statement" id="st-d0_s13" data-properties="rachis course;rachis pubescence;rachis orientation;rachis course;rachis atypical some measurement;rachis atypical some measurement;rachis some measurement;rachis pubescence"><b>Fruiting </b>pedicels divaricate-ascending, often straight, (1–) 2–5 (–6) mm, glabrous.</span> <span class="statement" id="st-d0_s14" data-properties="flower shape;flower some measurement;flower pubescence;flower pubescence"><b>Flowers:</b> sepals (green or purplish), ovate, 1.2–2.2 mm, glabrous or pubescent, (trichomes simple);</span> <span class="statement" id="st-d0_s15" data-properties="petal coloration;petal shape;petal length;petal width">petals white, spatulate, 2–2.5 × 0.8–1.5 mm;</span> <span class="statement" id="st-d0_s16" data-properties="anther shape;anther some measurement">anthers ovate, 0.2–0.25 mm.</span> <span class="statement" id="st-d0_s17" data-properties="fruit shape;fruit shape;fruit shape;fruit atypical length;fruit length;fruit width"><b>Fruits </b>elliptic-lanceolate to oblong, plane, flattened, 3–8 (–9) × 1.5–2 mm;</span> <span class="statement" id="st-d0_s18" data-properties="valve pubescence">valves glabrous;</span> <span class="statement" id="st-d0_s19" data-properties="ovule quantity">ovules 12–24 per ovary;</span> <span class="statement" id="st-d0_s20" data-properties="style atypical some measurement;style some measurement">style 0.05–0.2 (–0.3) mm.</span> <span class="statement" id="st-d0_s21" data-properties="seed shape;seed length;seed width;2n chromosome quantity"><b>Seeds </b>oblong to elliptic, 0.8–1 × 0.5–0.6 mm. <b>2n</b> = 16.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Rock outcrops and talus, alpine meadows, sandy gravel
|elevation=0-1400 m at higher latitudes, 3000-3800 m at lower latitudes
|distribution=Greenland;B.C.;N.W.T.;Nunavut;Que.;Yukon;Alaska;Colo.;Utah;Wyo.;c;s Europe;Asia;circumpolar and high alpine areas
|discussion=<p>Rollins reduced Draba pattersonii to a variety of D. fladnizensis and separated the two primarily on plant size and minor differences in fruit shape. Examination of D. fladnizensis specimens collected throughout Europe and North America reveals that the alleged differences between the two taxa are artificial. The type material of D. pattersonii, which was collected in Colorado, is a mixture of plants highly variable in their type of indumentum. The specimens have no flowers, but the habit, fruits, and leaves are nearly indistinguishable from those of D. fladnizensis from higher latitudes.</p><!--
--><p>In the absence of flowers, the white-flowered Draba fladnizensis (2n = 16) is often confused with the yellow-flowered D. crassifolia (2n = 40). The latter is an annual or short-lived perennial that rarely forms a well-developed caudex, whereas D. fladnizensis almost always produces a distinct caudex. Although most individuals of both species are scapose, they occasionally produce one or two cauline leaves. The cauline leaves are usually glabrous in D. crassifolia and ciliate in D. fladnizensis; in the latter, the distalmost cauline leaf usually subtends the proximalmost flower. Finally, the seeds in D. fladnizensis are slightly larger (0.8–0.1 × 0.5–0.6 versus 0.7–0.8 × 0.4–0.5 mm) than those of D. crassifolia, though the reliability of this distinction needs to be examined in greater detail. N. H. Holmgren (2005b) reported D. fladnizensis from central Nevada, but we have not seen any material of the species from that state.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba fladnizensis
|authority=Wulfen in N. J. Jacquin
|rank=species
|parent rank=genus
|synonyms=Draba fladnizensis var. pattersonii;Draba pattersonii;Draba pattersonii var. hirticaulis;Draba wahlenbergii
|basionyms=
|family=Brassicaceae
|phenology=Flowering Jun–Aug.
|habitat=Rock outcrops and talus, alpine meadows, sandy gravel
|elevation=0-1400 m at higher latitudes, 3000-3800 m at lower latitudes
|distribution=Greenland;B.C.;N.W.T.;Nunavut;Que.;Yukon;Alaska;Colo.;Utah;Wyo.;c;s Europe;Asia;circumpolar and high alpine areas
|reference=None
|publication title=in N. J. Jacquin, Misc. Austriac.
|publication year=1778
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V7/V7_403.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba fladnizensis
|2n chromosome quantity=16
|anther shape=ovate
|anther some measurement=0.2mm;0.25mm
|basal leaf arrangement=rosulate
|blade atypical length=1.2cm;1.6cm
|blade atypical width=3mm;4mm
|blade length=0.4cm;1.2cm
|blade shape=oblong;ovate
|blade width=1mm;3mm
|caudex architecture=scapose;branched;simple
|cauline leaf architecture=sessile
|cauline leaf quantity=0;2
|flower architecture=bracteate
|flower length=elongated
|flower position=proximalmost
|flower pubescence=pubescent;glabrous
|flower shape=ovate
|flower some measurement=1.2mm;2.2mm
|fruit atypical length=8mm;9mm
|fruit length=3mm;8mm
|fruit shape=flattened;plane;elliptic-lanceolate;oblong
|fruit width=1.5mm;2mm
|margin architecture or pubescence or shape=ciliate
|margin architecture or shape=entire;entire
|margin shape=toothed
|ovule quantity=12;24
|petal coloration=white
|petal length=2mm;2.5mm
|petal shape=spatulate
|petal width=0.8mm;1.5mm
|raceme architecture=ebracteate;3-11(-14)-flowered
|rachis atypical some measurement=5mm;6mm
|rachis course=straight;not flexuous
|rachis orientation=divaricate-ascending
|rachis pubescence=glabrous;glabrous
|rachis some measurement=2mm;5mm
|seed length=0.8mm;1mm
|seed shape=oblong;elliptic
|seed width=0.5mm;0.6mm
|stem architecture=unbranched
|stem atypical some measurement=1dm;1.3dm
|stem pubescence=glabrous
|stem some measurement=0.3dm;1dm
|style atypical some measurement=0.2mm;0.3mm
|style some measurement=0.05mm;0.2mm
|surface pubescence=glabrous;pubescent
|trichome architecture=simple
|trichome pubescence=glabrous
|valve pubescence=glabrous
|whole-organism duration=perennial
}}<!--

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