Pseudabutilon umbellatum

(Linnaeus) Fryxell

Contr. Univ. Michigan Herb. 21: 190. 1997.

Basionym: Sida umbellata Linnaeus Syst. Nat. ed. 10, 2: 1145. 1759
Synonyms: Abutilon umbellatum (Linnaeus) Sweet
Treatment appears in FNA Volume 6. Treatment on page 309. Mentioned on page 216, 308.

Shrubs, erect, 1–2 m, sometimes branching in inflorescence. Stems densely stellate-hairy, hairs tufted, sometimes also with few appressed, simple hairs. Leaves: stipules linear to lanceolate, to 10 × 1 mm, stellate-hairy; petiole 1/2–1 times blade length, stellate-hairy; blade broadly ovate, sometimes shallowly 3-lobed apically, to 12 × 6 cm, gradually reduced and narrower upward, apex acute or acuminate, surfaces with bifurcate hairs abaxially, stellate-hairy adaxially. Inflorescences 2–5-flowered umbels, sometimes appearing compound terminally; peduncle 1–5 cm, stellate-hairy. Pedicels 1–2 cm, stellate-hairy. Flowers: calyx 6–8 mm, lobes triangular, apex acute, stellate-hairy and sometimes hirsute with simple hairs; petals 6–8 mm, glabrous; staminal column 3–4 mm, setose and stellate-hairy; styles 6–8-branched. Schizocarps grayish brown at maturity, 5–9 mm diam., stellate-hairy; mericarps 6–8, spur 2–4 mm. Seeds 2–3 mm. 2n = 30.


Phenology: Flowering year-round.
Habitat: Dry shrublands, roadside ditches, fencerows
Elevation: 300–800 m

Distribution

V6 562-distribution-map.jpg

Tex., Mexico, West Indies, Central America, South America

Discussion

In the flora area, Pseudabutilon umbellatum is known only from the lower Rio Grande of southern Texas.

Selected References

None.

Lower Taxa

None.

No values specified."/2-1timesbladelength" is not declared as a valid unit of measurement for this property.

... more about "Pseudabutilon umbellatum"
hirsute +  and stellate-hairy +
acute;acuminate;acute +
Brian R. Keener +
(Linnaeus) Fryxell +
cordate +
Sida umbellata +
asymmetric +  and symmetric +
0 cm0 mm <br />0 m <br /> (12 cm120 mm <br />0.12 m <br />) +
3-lobed +  and ovate +
reduced +
not inflated +
subequal +  and accrescent +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
indehiscent +  and loculicidal +
campanulate +  and rotate +
Tex. +, Mexico +, West Indies +, Central America +  and South America +
300–800 m +
sparse;copious +
pistillate +  and staminate +
unisexual +  and bisexual +
erect +  and weakly ascending +
oblate +  and not inflated +
Dry shrublands, roadside ditches, fencerows +
bifurcate +
axillary +  and terminal +
tough-fibrous +
connate +  and distinct +
dehiscent +  and disintegrating +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
triangular +
entire +  and serrate +
crenate;serrate +
wedge--shaped +
5-8[-10]-carpellate +
stellate-hairy +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
stellate-hairy +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
adnate +  and distinct +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
stellate-hairy +
Flowering year-round. +
Contr. Univ. Michigan Herb. +
grayish brown +
stellate-hairy +
papillate +
turbinate +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
persistent +
sessile +  and subsessile +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
stellate-hairy +  and setose +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not viscid +
decumbent;erect +
stellate-hairy +
filiform +, linear +  and capitate +
1-2 times number of carpels +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
stellate-hairy +
linear +  and lanceolate +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
6-8-branched +
stellate-hairy +
Abutilon umbellatum +
Pseudabutilon umbellatum +
Pseudabutilon +
species +
2-5-flowered +
monoecious +, dioecious +  and hermaphroditic +