Alvaradoa

Liebmann

Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn 1853: 100. 1854.

Etymology: For Pedro de Alvarado y Contreras, ca. 1485 – 1541, member of Cortez’s expedition to Mexico
Treatment appears in FNA Volume 9. Treatment on page 4. Mentioned on page 3.
 TaxonIllustrator 
FNA9 P1 Alvaradoa amorphoides.jpegPicramnia pentandra
Alvaradoa amorphoides subsp. psilophylla
Staphylea trifolia
Marjorie C. Leggitt
Marjorie C. Leggitt
Marjorie C. Leggitt

Shrubs or trees, 10–70 [–150] dm. Leaves imparipinnate (mimosoid in appearance); leaflets [14–] 17–35 [–40], alternate, elliptic, 8–33 × 3–9 mm, base rounded to oblique. Inflorescences lateral to subterminal, racemes. Flowers: sepals 5; petals 5 or 0; stamens 5, anthers dorsifixed with enlarged connective, thecae parallel; pistils 3-carpellate, 2 lateral carpels sterile, central fertile, in staminate flowers pistils vestigial. Fruits samaras, flattened or recurved, usually hairy; sepals not persistent. Seeds 1, ellipsoid, ± 1/4–1/3 length of samara. x = 8.

Distribution

Fla., Mexico, West Indies, Central America, South America (Argentina), South America (Bolivia)

Discussion

Species 6 (1 in the flora).

A chromosome count for Alvaradoa subovata Cronquist of Argentina is 2n = 16 (A. M. Sanso and M. N. Seo 2005). The samara is derived from a dry, indehiscent capsule; the wings are formed from the two lateral, sterile carpels.

Selected References

None.

"/4lengthofsamara" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

... more about "Alvaradoa"
dorsifixed +
W. Wayt Thomas +
Liebmann +
rounded;oblique +
Fla. +, Mexico +, West Indies +, Central America +, South America (Argentina) +  and South America (Bolivia) +
For Pedro de Alvarado y Contreras, ca. 1485 – 1541, member of Cortez’s expedition to Mexico +
pistillate +  and staminate +
lateral +  and subterminal +
fertile +  and sterile +
imparipinnate +
persistent +
0.8 cm8 mm <br />0.008 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
3 +  and 2 +
stramineous;maroon or red +
distinct +
Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn +
not arillate +
ellipsoid +
not persistent +
distinct +  and connate +
antipetalous +
persistent +
lacking;2;3 +
Alvaradoa +
Picramniaceae +
tree +  and shrub +