Callitriche stenoptera

Lansdown

Novon 19: 367, fig. 1. 2009.

Endemic
Treatment appears in FNA Volume 17. Treatment on page 54. Mentioned on page 49, 50, 51.

Leaves not connate at base, ± linear tapering from base, 5.9–11.3 × 0.3–1.1 mm, 1-veined. Stem and leaf scales absent. Inflorescences: bracts absent. Pedicels 0–0.2 mm in fruit. Flowers usually solitary or 1 pistillate and 1 staminate in an axil; styles reflexed or strongly curved; pollen colorless. Schizocarps 0.8–1.2 × 0.9–1.3 mm, as long as or shorter than wide; mericarps brown or gray-brown, not swollen, winged throughout, wings straight, 0.05–0.1 mm wide, width less than mericarp body.


Phenology: Flowering Jun–Sep.
Habitat: Lakes, pools, ponds, ditches, streams, backwaters.
Elevation: 0–3000 m.

Distribution

Alta., B.C., Nfld. and Labr. (Nfld.), Ont., Sask., Ariz., Colo., Idaho, Minn., Mont., N.Mex., Oreg., Utah, Wyo.

Discussion

Callitriche stenoptera most closely resembles C. fassettii and C. hermaphroditica but is distinguished from them by the fruit on which the wing is less than 0.1 mm wide, even at the fruit apex.

Selected References

None.

Lower Taxa

None.
... more about "Callitriche stenoptera"
Richard V. Lansdown +
Lansdown +
alternate +, opposite +, whorled +, helical +  and subopposite +
not leathery +  and not fleshy +
ligulate +, unilabiate +, regular +, personate +  and bilabiate +
ovoid +, globular +, ellipsoid +, urceolate +, tubular +, cylindric +, less rotate +  and salverform +
Alta. +, B.C. +, Nfld. and Labr. (Nfld.) +, Ont. +, Sask. +, Ariz. +, Colo. +, Idaho +, Minn. +, Mont. +, N.Mex. +, Oreg. +, Utah +  and Wyo. +
drupe-like +
0–3000 m. +
curved +  and straight +
staminate +  and pistillate +
poricidal +, septicidal +, loculicidal +  and dehiscence +
Lakes, pools, ponds, ditches, streams, backwaters. +
decussate +  and opposite +
persistent +  and deciduous +
not connate +
0.59 cm5.9 mm <br />0.0059 m <br /> (1.13 cm11.3 mm <br />0.0113 m <br />) +
tapering +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
gray-brown +  and brown +
not swollen +
axile +  and parietal +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
5 +  and 4 +
Flowering Jun–Sep. +
minute +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0.9mm;1.3mm +
red +, maroon +, black +, gray +, yellow +, brown +, tan +  and white +
ovoid +  and ellipsoid cylindric globular oblong conic disciform patelliform or angled +
distinct +  and connate +
5 +  and 4 +
adnate +  and free +
climbing +  and scrambling +
supported by water , glabrous or bearing scales +  and creeping +
reclining;pendent;spreading;arching;erect;ascending;erect;ascending;decumbent +
Callitriche stenoptera +
Callitriche +
species +
terrestrial +  and amphibious +
straight +
0.05mm;0.1mm +