familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Bromeae
genusBromus
sectionBromus sect. Bromopsis
speciesBromus pumpellianus
subspeciesBromus pumpellianus subsp. dicksonii

Bromus pumpellianus subsp. dicksonii

W. W. Mitch. & Wilton
Leon E. Pavlickf
Endemic
Treatment appears in FNA Volume 24. Treatment on page 207.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants cespitose, sometimes shortly rhizomatous. Culms 65-135 cm, ascending, often geniculate; nodes 3-7, glabrous or pubescent; internodes glabrous. Sheaths glabrous or hairy; auricles sometimes present; ligules 0.5-4 mm; blades 7-30 cm long, 2.5-8.5 mm wide, glabrous or hairy on both surfaces, sometimes only the adaxial surface hairy. Panicles 10-24 cm, usually open, nodding to partially erect; branches spreading to drooping. Spikelets 16-32 (45) mm. Glumes glabrous or hairy; lower glumes 5-10 mm, 1 (3) -veined; upper glumes 7.5-13 mm, 3-veined; lemmas 9-16 mm, sparsely to densely hairy throughout or along the marginal vein and keel; awns 2.5-7.5 mm; anthers (3.5) 4-6 (6.8) mm. 2n = 28.

Discussion

Bromus pumpellianus subsp. dicksonii grows in shallow, rocky soils of river banks and bluffs in the Yukon River drainage of Alaska. Apart from the more restricted distribution, it is not clear how this subspecies differs from the introduced B. riparius.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bromus pumpellianus subsp. dicksonii"
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2n chromosome quantity
28 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +  and scarious +
Adaxial surface pubescence
hairy +
Anther atypical quantity
2 (?) +
Anther atypical some measurement
3.5 cm35 mm <br />0.035 m <br /> (?) +
Anther quantity
3 +
Anther some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Apex architecture or shape
emarginate +  and entire +
Apex pubescence
hairy +
Apex shape
subulate +  and acute +
Arm cell presence
absent +
Auricle presence
absent +
Author
Leon E. Pavlickf +
Authority
W. W. Mitch. & Wilton +
Awn architecture
unbranched +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn course
straight +
Awn fusion
distinct +
Awn orientation
arising +
Awn position
subterminal +  and terminal +
Awn presence
absent +
Awn quantity
3 +
Awn shape
geniculate +
Awn some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
Back shape
keeled +  and rounded +
Basal floret quantity
1 +  and 2 +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base fusion
free +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
hard +
Base width
thick +
Blade arrangement
parallel +
Blade arrangement or course or shape
linear +
Blade length
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Blade prominence
not evident +
Blade prominence or shape
flat +
Blade pubescence
hairy +  and glabrous +
Blade shape
cross +, linear +  and narrowly lanceolate +
Blade shape or vernation
involute +
Blade width
0.25 cm2.5 mm <br />0.0025 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
Branch orientation
spreading;drooping +
Branch shape
spikelike +
Callus development
developed +
Callus pubescence
glabrous +
Culm architecture
not branching +
Culm architecture or arrangement or growth form
solitary +
Culm arrangement
clumped +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm orientation
ascending +
Culm quantity
Few (Single) +
Culm shape
geniculate +
Culm some measurement
65 cm650 mm <br />0.65 m <br /> (135 cm1,350 mm <br />1.35 m <br />) +
Culm texture
not woody +
Distal floret size
reduced +
Distribution
Conn. +, Mass. +, N.H. +, N.J. +, N.Y. +, Calif. +, Del. +, N.C. +, Va. +, W.Va. +, Vt. +, D.C +, Wis. +, Colo. +, Kans. +, Nebr. +, Okla. +, Idaho +, Mont. +, Oreg. +, Wash. +, Wyo. +, Pacific Islands (Hawaii) +, N.Mex. +, Utah +, Maine +, R.I. +, Fla. +, Ala. +, Ark. +, Ariz. +, Ga. +, Iowa +, Ill. +, Ind. +, Ky. +, La. +, Md. +, Mich. +, Minn. +, Mo. +, Miss. +, N.Dak. +, Nev. +, Ohio +, Pa. +, S.Dak. +, Tenn. +, Tex. +, Alaska +, S.C. +, Alta. +, B.C. +, Greenland +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +  and Yukon +
Embryo quantity
1/6 +
Endosperm texture
liquid +, soft +  and hard +
Filament shape
capillary +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
16 +  and 3 +
Floret length or size
sometimes longer +
Floret quantity
4 +  and 14 +
Floret reproduction
bisexual +
Floret shape
terete +  and laterally compressed +
Glume architecture
1-9(11)-veined +
Glume architecture or shape
awned +
Glume height or length or size
always shorter +  and usually shorter +
Glume length
lanceolate +
Glume position
subtending +
Glume presence
absent +
Glume pubescence
hairy +  and glabrous +
Glume quantity
1/4 +
Glume shape
mucronate +  and acute +
Glume size
unequal +
Glume variability
equal +
Hair shape
uncinate +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum shape
Ovate (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Cindy Roché +
Inflorescence architecture
compound +
Inflorescence position or structure subtype
terminal +
Inflorescence size
reduced +
Internode architecture
solid +  and hollow +
Internode presence
absent +
Internode pubescence
glabrous +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
5-13-veined +
Lemma architecture or shape
not +  and awned +
Lemma arrangement
adjacent +
Lemma pubescence
along the marginal vein +  and hairy +
Lemma shape
rounded +  and lanceolate +
Lemma some measurement
0.9 cm9 mm <br />0.009 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Lemma texture
herbaceous +  and coriaceous +
Ligule architecture or relief
erose +
Ligule presence
absent +
Ligule pubescence
glabrous +
Ligule shape
obtuse +  and truncate +
Ligule some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ligule texture
membranous +
Lobe some measurement
? (?) +
Lodicule architecture
not veined +
Lodicule architecture or pubescence or shape
ciliate +
Lodicule architecture or shape
truncate +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
2 +
Lodicule shape
lanceolate +
Lodicule texture
fleshy +  and membranous +
Lower glume architecture
1(3)-veined +
Lower glume atypical some measurement
4 +
Lower glume some measurement
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Midrib architecture
simple +
Node prominence
concealed +  and prominent +
Node pubescence
pubescent +  and glabrous +
Node quantity
3 +  and 7 +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
hairy +  and glabrous +
Palea architecture or pubescence or shape
ciliate +
Palea development
well-developed +
Palea height or length or size
usually shorter +
Palea presence
absent +
Palea shape
keeled +
Palea size
reduced +
Panicle architecture
open +
Panicle condition or size
contracted +
Panicle orientation
nodding +  and partially erect +
Panicle some measurement
10 cm100 mm <br />0.1 m <br /> (24 cm240 mm <br />0.24 m <br />) +
Papilla presence
absent +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pseudopetiole presence
absent +
Raceme architecture
open +
Rachilla length
prolonged +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath condition
closed +
Sheath length
full +
Sheath pubescence
hairy +  and glabrous +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 288.xml +
Special status
Endemic +
Spike architecture
ebracteate +
Spikelet arrangement
mixed +
Spikelet atypical some measurement
45 +
Spikelet coloration
purplish +
Spikelet fixation
attached +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
not viviparous +
Spikelet shape
elliptic +  and lanceolate terete +
Spikelet some measurement
1.6 cm16 mm <br />0.016 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +  and compound +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Synonyms
Bromus pumpellianus var. arcticus +, Bromus inermis subsp. pumpellianus +, Bromus inermis var. purpurascens +, Bromopsis pumpelliana var. arctica +, Bromopsis pumpelliana +  and Bromopsis inermis subsp. pumpellianus +
Taxon family
Poaceae +
Taxon name
Bromus pumpellianus subsp. dicksonii +
Taxon parent
Bromus pumpellianus +
Taxon rank
subspecies +
Terminal floret reproduction
sexual +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper glume architecture
3-veined +
Upper glume atypical some measurement
5 +
Upper glume some measurement
0.75 cm7.5 mm <br />0.0075 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Vein arrangement
converging +
Vein presence
absent +
Vein quantity
2 (?) +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +  and cespitose +
Whole organism growth form or habitat
aquatic +  and terrestrial +
X chromosome quantity
7 +