Nassella chilensis

(Trin.) E. Desv.
Common names: Chilean tussockgrass
Treatment appears in FNA Volume 24. Treatment on page 177.

Plants perennial; shortly rhizomatous, appearing cespitose, rhizomes slender, somewhat woody. Culms 30-100 cm tall, 0.4-0.7 mm thick, bases somewhat bulblike, erect, geniculate and often branching intra-vaginally at the lower cauline nodes, internodes glabrous; nodes 5-8+, glabrous. Sheaths mostly glabrous, throats sometimes ciliate; collars sparsely hairy, with tufts of hair at the sides, hairs 0.5-1.3 mm; ligules 0.2-0.3 mm, truncate, usually ciliate; blades 3-10 cm long, 1-1.5 mm wide, strongly convolute, stiff, abaxial surfaces glabrous, adaxial surfaces with coarse hairs. Panicles 2-20 cm; branches 0.4-1.2 cm, with 1-4 spikelets; pedicels 0.5-4 mm. Glumes subequal, 3-4.5 mm long, 1.1-1.6 mm wide, ovate, 3-veined, glabrous or puberulent, acuminate; florets 1.6-2.2 mm long, 0.6-0.9 mm wide, obovate to oblong, terete, widest near the top; calluses 0.2-0.3 mm, obtuse, glabrous; lemmas glabrous, smooth, lustrous, transition to the crown not evident; crowns about 0.1 mm long and wide, not differing in texture from the lemmas; awns 7-10 mm, eccentric, rapidly deciduous; anthers about 1 mm or 0.3-0.4 mm, florets with longer anthers presumably chasmogamous, those with shorter anthers presumably cleistogamous. Caryopses about 1 mm. 2n = 42.

Discussion

Nassella chilensis is an Andean species that was once collected from a ballast dump in Portland, Oregon. It is not established in the Flora region.

Selected References

None.

Lower Taxa

None.

"-0.4mm" is not declared as a valid unit of measurement for this property."decumbent" is not a number.

... more about "Nassella chilensis"
membranous +  and scarious +
3 +  and 1 +
penicillate +
awned +, bifid +, bilobed +  and entire +
not lobed +, not sharp +, narrowly acute +  and acute +
Mary E. Barkworth +
(Trin.) E. Desv. +
twisted +  and not branched +
1 (?) +  and 3 (?) +
eccentric +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
keeled +  and rounded +
pale color +
intravaginal +, extravaginal +, branching +  and basal +
geniculate +
constricted +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
not evident +
cross +, linear +  and narrowly lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
spikelike +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
well-developed +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Chilean tussockgrass +
perennial +  and annual +
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
ascending +  and erect +
10 cm100 mm <br />0.1 m <br /> (175 cm1,750 mm <br />1.75 m <br />) +
not woody +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
0 +  and 2/5 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
sometimes longer +
terete +, obovate +  and oblong +
widest +, 0.6mm +  and 0.9mm +
3mm +  and 4.5mm +
subtending +
puberulent +  and glabrous +
acuminate +  and ovate +
subequal +
membranous +
1.1mm +  and 1.6mm +
uncinate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
solid +  and hollow +
basally concentrated +  and evenly distributed +
3 cm30 mm <br />0.03 m <br /> (60 cm600 mm <br />0.6 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
tuberculate +  and papillose +
ovate +, rectangular +  and lanceolate +
membranous +  and coriaceous or indurate +
ciliate +  and pubescent +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
concealed +  and prominent +
5 +  and 8 +
2 +  and 1 +
well-developed +
0 +  and 1/2 +
reduced +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
dry +  and fleshy +
not prolonged +
unisexual +  and bisexual +
laterally compressed +  and terete +
0.3 cm3 mm <br />0.003 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Nassella chilensis +
Nassella +
species +
membranous +
inconspicuous +
aquatic +  and terrestrial +