familyAsteraceae
tribeAsteraceae tribe Anthemideae
genusArtemisia
subgenusArtemisia subg. Tridentatae
speciesArtemisia rothrockii

Artemisia rothrockii

A. Gray in W. H. Brewer et al.

in W. H. Brewer et al., Bot. California 1: 618. 1876.

Leila M. Shultz
Common names: Rothrock or sticky sagebrush
Endemic
Synonyms: Artemisia tridentata subsp. rothrockii (A. Gray) H. M. Hall & Clements Seriphidium rothrockii (A. Gray) W. A. Weber
Treatment appears in FNA Volume 19. Treatment on page 515. Mentioned on page 503, 510, 511.

Shrubs, 20–50 cm (sticky-resinous and dark green throughout), pungently aromatic; not root-sprouting (trunks relatively narrow). Stems white (becoming dark gray with age), canescent (bark exfoliating). Leaves persistent, light or dark gray-green; blades long-cuneate to lanceolate, (0.4–) 1–1.5 (–2) × 0.2–0.4 cm, 3-lobed (lobes to 1/3 blade lengths, rounded, margins sometimes entire, somewhat wavy), faces densely to sparsely canescent, gland-dotted, sticky-resinous. Heads (erect, sessile or pedunculate) in paniculiform arrays, 5–15 × 1–2 (–3) cm. Involucres broadly ovoid, 3–5 × 4–6 mm. Phyllaries (usually gray-green) ovate, densely or sparsely canescent. Florets 12–20; corollas 2.5–3.5 mm. Cypselae 0.8–2 mm, (smooth), resinous. 2n = 36, 54, 72.


Phenology: Flowering mid summer–all.
Habitat: Clay soils of mountain meadows
Elevation: 2500–3100 m

Distribution

V19-874-distribution-map.gif

Calif.

Discussion

Artemisia rothrockii is known only from the central and southern Sierra Nevada and the White Mountains of California. In the Rocky Mountains, A. spiciformis has been confused with A. rothrockii. Distinctive chemistry and anatomical structure of the leaves support the distinctness of A. rothrockii (L. M. Shultz 1986b). Intermediate characteristics suggest a hybrid origin from races of A. cana and A. tridentata.

Selected References

None.

Lower Taxa

None.
... more about "Artemisia rothrockii"
RDF feed
2n chromosome quantity
72 +, 54 +  and 36 +
Anther base shape
not tailed +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Apex architecture or shape
truncate +
Apex texture
scarious +
Apical appendage shape
ovate +
Appendage pubescence
hirsute +
Appendage relief
papillate +
Appendages ring presence
absent +
Array architecture
paniculiform +
Array development
indeterminate +  and determinate +
Author
Leila M. Shultz +
Authority
A. Gray in W. H. Brewer et al. +
Band architecture
continuous +
Band quantity
1 +
Base shape
decurrent +
Basionyms
Tridentatae +
Blade architecture
compound +  and simple +
Blade atypical length
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Blade length
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Blade shape
3-lobed;long-cuneate;lanceolate +
Blade width
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Calyculus presence
absent +
Caudex texture
woody +
Common name
Rothrock or sticky sagebrush +
Corolla architecture
zygomorphic +, actinomorphic +  and (3-)5-merous +
Corolla coloration
red +  and pale-yellow +
Corolla presence
absent +
Corolla quantity
lacking +
Corolla some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Cypsela architecture
winged +  and monomorphic +
Cypsela coating
resinous +
Cypsela growth form
dimorphic +
Cypsela shape
fusiform +
Cypsela some measurement
0.8mm;2mm +
Disc-floret architecture
staminate +
Disc-floret atypical quantity
20 (30) +
Disc-floret quantity
2 (20) +
Disc-floret reproduction
fertile +  and bisexual +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Distribution
Calif. +
Elevation
2500–3100 m +
Embryo course
straight +
Face coating
sticky-resinous +
Face coloration
gland-dotted +
Face pubescence
canescent +
Filament fusion
distinct +
Floret architecture
pistillate +, staminate +  and neuter +
Floret atypical quantity
5;15 +
Floret position
proximal +
Floret quantity
12;20 +
Floret reproduction
fertile +  and bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Habitat
Clay soils of mountain meadows +
Head architecture
spiciform +  and racemiform +
Head architecture or shape
discoid +
Head arrangement
in subcapitate clusters +  and singly +
Head atypical width
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Head development
indeterminate +
Head length
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Head reproduction
heterogamous +  and homogamous +
Head size or width
narrow +
Head width
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Illustration copyright
Flora of North America Association +
Illustrator
Linda Ann Vorobik +
Individual head architecture
each +  and sessile +
Involucre diameter
0.15 cm1.5 mm <br />0.0015 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Involucre length
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Involucre position relational
surrounding +
Involucre shape
ovoid +
Involucre width
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Leaf architecture
sessile +  and petiolate +
Leaf arrangement
alternate +
Leaf coloration
dark gray-green +  and light +
Leaf duration
persistent +
Leaf position
cauline +  and basal +
Line quantity
2 +
Lobe quantity
5 (?) +
Lobe shape
deltate +
Margin architecture or shape
entire +  and dentate +
Margin shape
lobed +
Margin texture
scarious +
Number of lower taxa
0 +
Ovary architecture
2-carpellate +
Ovary architecture or structure in adjective form
1-locular +
Ovary position
inferior +
Ovule fixation
attached +
Ovule orientation
anatropous +
Ovule quantity
1 +
Pappus duration
persistent +
Pappus life cycle
falling +
Pappus presence
absent +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering mid summer–all. +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary growth form or texture
herbaceous +
Phyllary life cycle
falling +
Phyllary pubescence
canescent +
Phyllary quantity
2 +  and 20 +
Phyllary shape
Ovate (?) +
Phyllary size
unequal +
Phyllary texture
With margins and/or apices (Scarious) +
Publication title
in W. H. Brewer et al., Bot. California +
Publication year
1876 +
Ray-floret architecture
styliferous +, neuter +  and pistillate +
Ray-floret presence
absent +
Ray-floret quantity
In 1( (2+) series) +
Ray-floret reproduction
sterile +  and fertile +
Receptacle architecture
epaleate +
Receptacle pubescence
glabrous +
Receptacle shape
conic;convex;conic;convex;flat +
Reference
None +
Rhizome presence
absent +
Rib presence
absent +
Rib quantity
2 +  and 5 +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
1 (2) +
Series quantity
4;7 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V19 874.xml +
Special status
Endemic +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture
branched +
Stem coloration
white +
Stem orientation
erect +
Stem pubescence
canescent +
Stem quantity
1 +  and 10 +
Stem shape
not wand-like +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
glabrous +
Style quantity
1 +
Style relief
papillate +
Synonyms
Artemisia tridentata subsp. rothrockii +  and Seriphidium rothrockii +
Taxon family
Asteraceae +
Taxon name
Artemisia rothrockii +
Taxon parent
Artemisia subg. Tridentatae +
Taxon rank
species +
Throat shape
funnel +  and subglobose +
Tube shape
cylindric +
Volume
Volume 19 +
Whole-organism duration
perennial +, biennial +  and annual +
Whole organism architecture
fibrous-rooted +
Whole organism growth form
shrub +  and not root-sprouting +
Whole organism odor
aromatic +
Whole organism some measurement
20cm (50cm) +
X chromosome quantity
9 +