Salix sect. Triandrae

Dumortier

Bijdr. Natuurk. Wetensch. 1: 58. 1826.

Synonyms: Salix sect. Amygdalinae W. D. J. Koch
Treatment appears in FNA Volume 7. Treatment on page 49. Mentioned on page 29, 39, 51.

Shrubs or trees, 2–7 (–10) m. Stems: (bark flaking in plates), branches ± brittle at base. Leaves: stipules on late ones and vigorous shoots foliaceous, apex acute to acuminate; petiole with paired, clustered, or stalked spherical glands or foliaceous glands distally; largest medial blade hypostomatous, abaxial surface glaucous or not; juvenile blade puberulent or pubescent abaxially, hairs white and ferruginous. Pistillate floral bracts persistent or deciduous after flowering. Staminate flowers: stamens 3 or, rarely, 2; anthers (dry), 0.4–0.6 mm. Pistillate flowers: adaxial nectary shorter than stipe; stipe 1–2 mm; ovary glabrous.

Distribution

Introduced; Eurasia

Discussion

Species 5 (1 in the flora).

A study of genetic relationships in Salix using AFLP (S. Trybush et al. 2008) showed that the genetic similarity of S. triandra to subg. Salix and subg. Vetrix was similar and greater than the genetic similarity between these subgenera. Further study may support treating sect. Triandrae as a distinct subgenus.

Selected References

None.

Lower Taxa

... more about "Salix sect. Triandrae"
not +  and glaucous +
reddish turning yellow +  and yellow +
Acute (?) +  and Acuminate (?) +
George W. Argus +
Dumortier +
tapering +
ferruginous +  and white +
pubescent +  and puberulent +
toothed +  and 2-fid +
persistent +  and deciduous +
not glaucous +
flowered +  and sessile +
subglobose +
slender +  and stout +
pistillate +  and staminate +
pendulous +, spreading +  and erect +
connate +  and distinct +
glabrous +  and hairy +
greenish +  and tawny +
deciduous +  and persistent +
pistillate +  and staminate +
bisexual +  and unisexual +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
foliaceous +  and stalked +
spherical +
white and ferruginous +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
oblanceolate +, ovate +, lanceolate +, elliptic +, oblong +  and lorate +
arranged +  and alternate +
marcescent +
deciduous +
rudimentary +
2-7[-10]-carpellate +
glandular-dotted +
Bijdr. Natuurk. Wetensch. +
overlapping +
distinct +
branched +, sympodial +, monopodial +  and branching +
non-papillate +
cylindrical +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
caducous +  and persistent +
distinct +  and connate +
persistent +  and deciduous +
ferruginous +  and white +
Salix sect. Amygdalinae +
Salix sect. Triandrae +
Salix subg. Salix +
section +
rounded +
sympodial +, branching +  and heterophyllous +
tree +  and shrub +