Urena

Linnaeus

Sp. Pl. 2: 692. 1753.

,

Gen. Pl. ed. 5, 309. 1754.

Introduced
Etymology: Malayalam ooren, to loosen or soak, alluding to retting process to extract fibers from stem tissues of U. lobata
Treatment appears in FNA Volume 6. Treatment on page 373. Mentioned on page 215, 218.
 TaxonIllustrator 
FNA6 P42 Talipariti tiliaceum.jpegTalipariti tiliaceum var. pernambucense
Thespesia populnea
Urena lobata
Linny Heagy
Linny Heagy
Linny Heagy

Herbs, perennial, subshrubs, or shrubs, stellate-hairy or glabrate. Stems erect. Leaves: stipules early-deciduous, subulate; blade variable, sometimes ovate, [oblong or lanceolate], often 3–5-angled, lobed, or –parted, base truncate to cordate, margins crenate [serrate], surfaces minutely stellate-hairy, with 1+ prominent, foliar nectaries (glands) on abaxial side at base of central vein. Inflorescences axillary solitary flowers or fascicles, [terminal racemes]; involucel present, bractlets persistent, 5, basally connate. Pedicels 1.5–7 mm. Flowers: calyx not accrescent, not inflated, lobes keeled, 1-veined, lanceolate, elliptic to ovate, usually acute, usually obscured by involucel; corolla shallowly campanulate to rotate, rose-pink, drying lavender; staminal column included; ovary 5-carpellate; ovules 1 per cell; style 10-branched, 2 per carpel; stigmas capitellate. Fruits schizocarps, erect, not inflated, oblate, unwinged, slightly indurate; mericarps 5, 1-celled, without dorsal spur, apex rounded, dorsal surface prominently glochidiate [smooth], otherwise hirtellous or glabrous, flat lateral surfaces striate, indehiscent. Seeds 1 per mericarp, obovoid or reniform, glabrous. x = 7.

Distribution

Introduced; nearly worldwide in tropical and warm regions

Discussion

Species 6 (1 in the flora).

Selected References

None.

Lower Taxa

... more about "Urena"
rounded +
Steven R. Hill +
Linnaeus +
truncate +  and cordate +
asymmetric +  and symmetric +
parted +, lobed +, 3-5-angled +  and ovate +
not inflated +
not accrescent +
indehiscent +  and loculicidal +
shallowly campanulate +  and rotate +
nearly worldwide in tropical and warm regions +
glabrous +, hirtellous +  and glochidiate +
sparse;copious +
Malayalam ooren, to loosen or soak, alluding to retting process to extract fibers from stem tissues of U. lobata +
pistillate +  and staminate +
unisexual +  and bisexual +
oblate +  and not inflated +
axillary +  and terminal +
tough-fibrous +
connate +  and distinct +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
acute +, elliptic +  and ovate +
entire +  and serrate +
wedge--shaped +
5-carpellate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
adnate +  and distinct +
Sp. Pl. +  and Gen. Pl. ed. +
1753 +  and 1754 +
reniform +  and obovoid +
persistent +
Introduced +
sessile +  and subsessile +
filiform +, linear +  and capitate +
1-2 times number of carpels +
early-deciduous +
stellate-hairy +
Mallow +
Malvaceae subfam. Malvoideae +
shrub +, subshrub +  and herb +
glabrate +  and stellate-hairy +
monoecious +, dioecious +  and hermaphroditic +