Difference between revisions of "Eleocharis compressa Sullivant (Q3286) "

d0_s1

Culms subterete to greatly compressed, to 5 times as wide as thick, often with 2–12 ridges, 8–45 cm × (0.2–) 0.5–1.8 mm, firm to hard, spongy.

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d0_s2

Leaves: distal leaf-sheaths persistent, not splitting, proximally red, distally green to stramineous, papery, apex usually redbrown, broadly obtuse to subtruncate, callose, tooth absent.

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d0_s3

Spikelets ovoid, 4–8 × 2–4 mm, apex acute;

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d0_s4

proximal scale clasping 3/4 of culm to amplexicaulous, entire;

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d0_s5

subproximal scale empty or with flower;

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d0_s6

floral scales spreading in fruit, 20–60, 6 per mm of rachilla, medium brown to very dark-brown, sometimes stramineous or colorless, midrib region often paler, ovate, 2–3 (–4) × 1–1.5 mm, apex acute to acuminate, the apical colorless hyaline region mostly longer than wide and 0.6–1.2 mm, in proximal part of spikelet 2-fid to shallowly cut, rarely entire, in distal part often entire, carinate in distal part of spikelet.

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d0_s7

Flowers: perianth bristles 0–5, stramineous, length variable, to equaling achene, obscurely to clearly retrorsely spinulose;

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d0_s8

stamens 3;

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d0_s9

anthers yellow to orangebrown, 0.7–2 mm;

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d0_s10

styles 3-fid or some 2-fid.

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d0_s11

Achenes falling with scales or some persistent, yellowbrown or dark-brown, obovoid to obpyriform, nearly equilaterally to compressedtrigonous or usually some biconvex, angles evident or obscure, 0.8–1.1 × 0.6–0.8 mm, neck very short, finely rugulose and sometimes finely (or coarsely) cancellate at 10–20X with 14–20 blunt horizontal ridges in a vertical series.

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d0_s12

Tubercles brown (to whitish), pyramidal, usually depressed, often rudimentary, 0.15–0.3 × 0.2–0.35 mm.

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d0_s13

morphology statement

whole organism

duration

perennial

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d0_s0

whole organism

growth form

mat-forming

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d0_s0

whole organism

growth form

plant

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d0_s0

stem internode

height

short

very

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d0_s1

stem internode

some measurement

0

2

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d0_s1

some measurement

5

12

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d0_s1

papery

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d0_s1

duration

persistent

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d0_s3

dehiscence

splitting

not

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d0_s3

red

proximally

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d0_s3

distally green

stramineous

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d0_s3

papery

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d0_s3

redbrown

usually

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d0_s3

broadly obtuse

subtruncate

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d0_s3

pubescence

callose

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d0_s3

inflorescence spikelet

ovoid

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d0_s4

inflorescence spikelet

4

8

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d0_s4

inflorescence spikelet

2

4

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d0_s4

acute

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d0_s4

fixation

clasping

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d0_s5

3/4

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d0_s5

entire

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d0_s5

empty

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d0_s6

with flower

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d0_s6

orientation

spreading

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d0_s7

medium

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d0_s7

brown to very

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d0_s7

dark-brown

very

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d0_s7

stramineous

sometimes

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d0_s7

colorless

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d0_s7

fruit

20

60

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d0_s7

fruit

6

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d0_s7

acute

acuminate

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d0_s7

0

5

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d0_s8

stramineous

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d0_s8

variability

length

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d0_s8

variability

variable

equaling

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d0_s8

variability

variable

equaling

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d0_s8

spinulose

obscurely to clearly retrorsely

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d0_s8

inflorescence flower stamen

3

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d0_s9

inflorescence flower anther

yellow

orangebrown

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d0_s10

inflorescence flower anther

some measurement

0.7

2

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d0_s10

inflorescence flower gynoecium pistil style

3-fid

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d0_s11

inflorescence flower gynoecium pistil style

some

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d0_s11

inflorescence flower gynoecium pistil style

2-fid

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d0_s11

biconvex

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d0_s12

yellowbrown

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d0_s12

dark-brown

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d0_s12

biconvex

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d0_s12

obovoid

obpyriform

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d0_s12

biconvex

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d0_s12

biconvex

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d0_s12

biconvex

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d0_s12

evident

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d0_s12

obscure

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d0_s12

inflorescence flower perianth neck

height

short

very

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d0_s12

inflorescence flower perianth neck

relief

rugulose

finely

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d0_s12

inflorescence flower perianth neck

cancellate

sometimes finely

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d0_s12

evident

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d0_s1

short to rather

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d0_s1

character

length

rather

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d0_s1

thickness

2

3

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d0_s1

firm

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d0_s1

tissue cortex

duration

persistent

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d0_s1

subterete

greatly compressed

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d0_s2

0-5 times as wide as thick

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d0_s2

8

45

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d0_s2

atypical width

0.2

0.5

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d0_s2

0.5

1.8

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d0_s2

firm

hard

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d0_s2

spongy

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d0_s2

amplexicaulous

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d0_s5

fruit achene

life cycle

falling

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d0_s12

fruit achene

0.8

1.1

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d0_s12

fruit achene

0.6

0.8

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d0_s12

brown

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d0_s13

pyramidal

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d0_s13

depressed

usually

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d0_s13

rudimentary

often

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d0_s13

0.15

0.3

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d0_s13

0.2

0.35

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