Najas guadalupensis subsp. muenscheri

(R. T. Clausen) R. R. Haynes & Hellquist

Novon 6: 371. 1996.

EndemicConservation concern
Basionym: Najas muenscheri Rhodora 39: 59. 1937
Treatment appears in FNA Volume 22.

Stems 30–90 cm × 0.8–1 mm. Leaves 0.9–1.3 cm; sheath 1–1.5 mm wide, apex rounded; blade 0.5–1.6 mm wide, teeth 50–100 per side, invisible to unaided eye, apex acute. Flowers 1 per axil. Staminate flowers 2–3 mm; anther 1-loculed. Pistillate flowers 2.9–4 mm. Seeds 3.3–3.8 × 0.5–0.7 mm; aeroleareoles of testa in 50–60 longitudinal rows. Chromosome number unknown not available.


Phenology: Flowering late summer.
Habitat: Shallow water of rivers
Elevation: 0–100 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.

"elongating" is not a number.

60 +, 54 +, 48 +, 42 +, 36 +  and 12 +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
acute +  and rounded +
Robert R. Haynes +
(R. T. Clausen) R. R. Haynes & Hellquist +
Najas muenscheri +
involucral +
4-lobed +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
armed +  and 1-veined +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
sharp-tipped +
short-pedunculate +  and sessile +
0–100 m +
pistillate +  and staminate +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Shallow water of rivers +
0.1 cm1 mm <br />0.001 m <br /> (9 cm90 mm <br />0.09 m <br />) +
light green +  and brown +
red-purple +  and purple +
whorled +, appearing +  and opposite +
submersed +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
serrate to minutely +
Flowering late summer. +
not stipitate +
longer than broad +
50 +  and 60 +
4-6-angled +  and not ladderlike +
auriculate +  and not auriculate +
yellowish white with purple tinge +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
not recurved +
fusiform +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
not persisting +
variously--shaped +
1mm;1.5mm +
Endemic +  and Conservation concern +
30 cm300 mm <br />0.3 m <br /> (90 cm900 mm <br />0.9 m <br />) +
slender +
0.8mm;1mm +
2-4-branched +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Najas guadalupensis subsp. muenscheri +
Najas guadalupensis +
subspecies +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
caulescent +  and not rhizomatous +
perennial +  and annual +