MALVACEAE 773 
1. Urena lobata L. Shrubby, tomentose. Leaf-blades orbicular-reniform, subor- 
bicular or oval on the upper part of the stem, shallowly 3—5-lobed, serrulate, cordate or 
rounded at the base, whitish and prominently nerved beneath; petioles shorter than the 
blades : peduncles axillary, several mm. long: bractlets of the involucel 5-7, linear-lance- 
olate, 3-5 mm. long: calyx about as long as the bractlets or shorter; lobes often ovate, 
acute: petals pink or rose-colored, about 2 cm. long, very delicate: carpels subglobose, 
4-5 mm. in diameter, bristly. 
In waste places, Florida. Naturalized from the West Indies, but originally from India. Through- 
out the year. 
11. PAVONIA Cav. 
Shrubs or shrubby herbs, with pubescent foliage. Stems usually upright. Leaves 
alternate, stipulate: blades angled or lobed. Flowers perfect, commonly solitary on axil- 
lary pedicels. Involucels of 5-15 bractlets. Sepals 5, partially united. Petals 5, of 
various colors. Carpels 5, l-celled. Styles 10. Stigmas capitate. Ovules solitary. Ma- 
ture carpels separating from the axis, 1-3-beaked on the back, or unarmed, rarely 2-winged, 
indehiscent or more or less deeply 2-valved. Seeds solitary, ascending. The plants flower 
from spring to fall or throughout the year. 
Carpels awnless and pointless. 
f-blades hastate: petals blotched at the base. 1. P. hastata. 
Leaf-blades ovate to orbicular-ovate: petals not blotched. 2. P. lasiopetala. 
Carpels 3-awned or 2-3-horned. 
Leaf-blades toothed : bractlets 5: carpels with 2 lateral awns. 8. P. spinifex. 
Leaf-blades nearly entire: bractlets 9-11: carpels with 2 lateral cusps. 4. P. racemosa. 
1. Pavonia hastàta Cav. A much branched, shrubby plant, 1-2 m. tall, the foliage 
roughish-canescent. Leaf-blades hastate or ovate-hastate, acutish, crenate-dentate, 2-5 cm. 
long, cordate ; petioles much shorter than the blades : peduncles much longer than the pet- 
ioles: bractlets of the involucels 5-6, ovate to obovate, 4-5 mm. long, slightly united at the 
base: calyx about as long as the bractlets; lobes broadly ovate, short-acuminate : petals 
obovate, 1.5-2.5 cm. long, pale red with a dark blotch at the base, delicately striped : car- 
pels obovate, 4.5-5 mm. long, prominently reticulated, without either awns or tips. 
Insandy soil, Georgia. Naturalized from South America. Spring to fall. 
2. Pavonialasiopétala Scheele. A branching shrubby plant 4-12 dm. tall, the foliage 
velvetytomentose. Leaf-blades ovate to suborbicular, 2-8 cm. long, obtuse or acutish, dentate 
or crenate-dentate, paler beneath than above, cordate; petioles as long as the blades or 
nearly so: peduncles as long as the petioles or longer: bractlets of the involucels linear, 
1-1.5 cm. long: calyx shorter than the bractlets; lobes ovate, acuminate, 3-5-nerved : 
petals pink, 1.5-2 cm. long, glabrous or pubescent, often undulate : carpels 5-6 mm. long, 
pointless, more or less strongly reticulated. [P. Wrightii A. Gray.] 
In dry and rocky woods, Texas and adjacent Mexico. 
. 9. Pavonia spinifex (L.) Cav. A branching shrub, 1-3 m. tall, with hirsute and 
strigillose foliage. Leaf-blades membranous, ovate or oblong-ovate, 5-10 cm. long, acute or 
somewhat acuminate, more or less distinctly doubly crenate-dentate, truncate or subcordate 
at the base; petioles densely pubescent, shorter than the blades: peduncles axillary, much 
longer than the petioles : bractlets of the involucel 5, linear to lanceolate, acute, nearly 1 
cm. long: calyx about as long as the bractlets ; lobes lanceolate to ovate-lanceolate : m 
als yellow, 2.5 cm. long, rather cuneate : carpels 5-6 mm. high, with 1 medial and 2 lat- 
eral retrorsely barbed awns. 
In sandy soil, near the coast, South Carolina to Florida. Naturalized from tropical America. 
.*. Pavonia racemósa L. A sparingly-branched, shrubby plant ranging from 1-3 
m. in height, the foliage more or less densely puberulent. Leaf-blades ovate to oblong-ovate, 
15 cm. long, acuminate, remotely serrate or repand, rounded or subcordate at the base, 
ipomunentiy 3-nerved beneath ; petioles shorter an the blades: racemes terminal, pens d 
lowered : bractlets of the involucels 6-8, oblong-lanceolate, 9-11 mm. long: calyx equal- 
ling the bractlets or longer ; lobes ovate, acute, thickish: petals twice as long as the calyx, 
nish yellow or whitish, finely pubescent without: carpels about 1 cm. long, reticu- 
ted on the back, with a medial crest and 2 lateral cusps. 
In or near swamps, Florida and tropical America. 
12, MALVAVISCUS Dill. 
Shrubs, trees, or shrubby herbs, commonly with hispid foliage. Leaves alternate: 
blades entire, toothed or rarely angulately lobed, petioled. Involucels of 7-12 narrow 
bractlets, Flowers perfect, on axillary peduncles. Sepals 5, partially united. Petals 5, 
