Cortaderia jubata

(Lemoine ex Carriere) Stapf
Common names: Purple pampas grass
Introduced
Synonyms: Cortaderia atacamensis
Treatment appears in FNA Volume 25. Treatment on page 299.

Plants pistillate (in North America). Culms 2-7 m, 4-7 times as long as the panicles. Leaves primarily basal; sheaths hairy, sometimes densely so; ligules 1-2 mm; blades 1 m long or longer, 2-10 cm wide, mostly flat, often horizontal, dark green, abaxial surfaces hairy near the base. Panicles 30-100 cm, elevated well above the basal foliage, deep violet when young. Spikelets 14-16 mm, pistillate; florets readily disarticulating; calluses about 0.6 mm; lemmas about 10 mm, long-attenuate to an awn, awns to 1 mm; paleas to 4 mm, keels ciliate, apical hairs extending beyond the body of the paleas; stigmas usually not exerted. Caryopses to 2.5 mm; embryos to 1 mm. 2n = 108.

Distribution

Calif., Pacific Islands (Hawaii), Oreg., Wash.

Discussion

Cortaderia jubata is found on the west coast of the coterminus United States, growing in disturbed, open ground such as brushy slopes, eroded banks and cliffs, road cuts, cut-over timber areas, and sand dunes. It is native to mountainous areas of Ecuador, Peru, and Bolivia. It was grown in the past as an ornamental because of its attractive panicles, but is now a serious weed in California, reproducing apomictically and invading many open habitats. It was mistakenly called C. rudiuscula Stapf by Hitchcock (1951). The florets of C. rudiuscula differ from those of C. jubata in being longer and narrower, having shorter, less hairy calluses, and in having no hairs that extend beyond the top of the palea. C. rudiuscula is not known from North America.

Selected References

None.

Lower Taxa

None.

"-7timesaslongasthepanicles" is not declared as a valid unit of measurement for this property.

... more about "Cortaderia jubata"
Kelly W. Allred +
(Lemoine ex Carriere) Stapf +
1 (?) +  and 3 (?) +
geniculate +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not pseudopetiolate +
longer +  and long +
flat +  and folded +
1 cm10 mm <br />0.01 m <br /> (?) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
stiff +  and flexible +
spikelike +
0.6 cm6 mm <br />0.006 m <br /> (?) +
0 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Purple pampas grass +
hollow +  and solid +
perennial +  and annual +
200 cm2,000 mm <br />2 m <br /> (700 cm7,000 mm <br />7 m <br />) +
woody +  and herbaceous +
Calif. +, Pacific Islands (Hawaii) +, Oreg. +  and Wash. +
small +  and large +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
capillary +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
disarticulating +
glabrous +, hairy +  and long-sericeous +
sometimes longer +
3 +, 2 +  and 9 +
bisexual +  and unisexual +
compressed +
subtending +
unequal +
non-uncinate +
spicate +  and ebracteate +
racemose +  and paniculate +
solid +  and hollow +
3-5(7)-veined +
entire +, awned +  and bifid +
with non-uncinate hairs +  and glabrous +
long-attenuate +
10 cm100 mm <br />0.1 m <br /> (?) +
firmly membranous +  and coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
setaceous +
inconspicuous +
ciliate +  and glabrous +
lobed +  and cuneate +
extended +
concealed +  and prominent +
2 +  and 1 +
well-developed +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
dry +  and fleshy +
Introduced +
bisexual +  and unisexual +
compressed +
1.4 cm14 mm <br />0.014 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
1 +  and 3 +
2 (?) +  and 3 (?) +
Cortaderia atacamensis +
Cortaderia jubata +
Cortaderia +
species +
membranous +
aquatic +  and terrestrial +
monoecious +  and dioecious +