Alvaradoa amorphoides subsp. psilophylla

(Urban) Cronquist

Brittonia 5: 135. 1944.

Illustrated
Basionym: Alvaradoa psilophylla Urban Repert. Spec. Nov. Regni Veg. 20: 304. 1924
Treatment appears in FNA Volume 9. Treatment on page 4.

Shrubs or trees, 10–70 dm. Stems of current-year puberulent. Leaves glabrous except for puberulent rachis; rachis (including petiole) 9.5–21 cm; petiolules 1–1.5 mm; leaflets 17–35, abaxially pale green, adaxially olive, oblong to elliptic, 5–8 (–10) × 14–19 mm, apex rounded. Racemes pendent; staminate-flowered racemes 7–15 cm, puberulent; pistillate-flowered racemes 7–10 cm, pubescent. Pedicels: staminate 1.5–2 mm; pistillate 1–2 mm. Staminate flowers: sepals 5, ovate, 1.5 mm, puberulent; petals 5, filiform, 3–3.5 mm, narrower than filaments; intrastaminal discs lobed; stamens 5, filaments 2–5 mm; pistils vestigial. Pistillate flowers: sepals 5, ovate, puberulent; petals 0; intrastaminal discs circular, thin, unlobed; stamens 0; pistils 3-carpellate, ovate, flattened, 2–2.2 × 1–1.4 mm, pubescent, stigmas unequal, 2 at apex of ovary, divergent, 3d slightly more proximal along medial line of pistil, sometimes only distal 2 stigmas present, 1 larger than other. Samaras stramineous or purplish tinged, flattened, (8–) 10–12 × 2.7–3.2 (–4) mm, dry, margins ciliate, puberulent; pedicels 6–10 mm.


Phenology: Flowering and fruiting year-round.
Habitat: Hammocks, pine woodlands, on limestone
Elevation: 0–20 m

Distribution

V9 4-distribution-map.jpg

Fla., West Indies (Bahamas), West Indies (Cuba)

Discussion

In the flora area, subsp. psilophylla is found in Miami-Dade County. Specimens of subsp. amorphoides from Mexico and Central America are, in general, more robust with longer, narrower fruits. Plants of subsp. amorphoides occur in a wider variety of habitats and are not obligate on limestone formations as are those of subsp. psilophylla.

Selected References

None.

Lower Taxa

None.

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

dorsifixed +
W. Wayt Thomas +
(Urban) Cronquist +
rounded;oblique +
Alvaradoa psilophylla +
Fla. +, West Indies (Bahamas) +  and West Indies (Cuba) +
0–20 m +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pistillate +  and staminate +
Hammocks, pine woodlands, on limestone +
lateral +  and subterminal +
unlobed +  and lobed +
fertile +  and sterile +
imparipinnate +
persistent +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
olive +  and pale green +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
oblong;elliptic +
1.4 cm14 mm <br />0.014 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
3 +  and 2 +
pistillate +  and staminate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
distinct +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Flowering and fruiting year-round. +
0.2 cm2 mm <br />0.002 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
flattened +  and ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
pistillate-flowered +  and staminate-flowered +
pubescent +  and puberulent +
7 cm70 mm <br />0.07 m <br /> (10 cm100 mm <br />0.1 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
purplish tinged +  and stramineous +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
flattened +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
not arillate +
ellipsoid +
not persistent +
distinct +  and connate +
1.5 cm15 mm <br />0.015 m <br /> (?) +
Illustrated +
antipetalous +
persistent +
1 +  and 2 +
larger +  and unequal +
Alvaradoa amorphoides subsp. psilophylla +
Alvaradoa amorphoides +
subspecies +
tree +  and shrub +