772 MALVACEAE 
angular, acute, or somewhat acuminate, about as long as the tube: corolla about 2.5 cm. 
broad: fruit 6-7 mm. broad : carpels 2-ridged above, not pointed, glabrous. 
In sandy soil, Georgia to Louisiana. Spring to fall. 
17. Sida Texàna (T. & G.) Small Perennial, pubescent with fine ashen hairs. 
Stems erect, 3-9 dm. tall, branched : leaf-blades broadly linear to linear-oblong, 2-7 cm. 
long, serrate-dentate ; petioles 3-6 mm. long: peduncles and pedicels about as long as 
the subtending bracts: calyx angled ; lobes triangular-acute, longer than the tube : corolla 
ellow, 2.5—4 cm. wide: carpels 9-12, about 3 mm. long, more or less puberulent on the 
ack, cuspidate, the sides and back coarsely rugose-reticulated. [S. Elliottii var. Texana 
T. & G., S. Lindheimeri Engelm. & Gray.] 
In dry soil, Louisiana to Texas and Mexico. Spring to fall. 
18. Sida lóngipes A. Gray. Perennial, scabro-puberulent. Stems erect, 2-4 dm. 
tall, simple, or branching above: leaf-blades linear or narrowly-linear, 2-8 cm. long, ob- 
tuse or acutish, serrulate or serrulate-crenulate, delicately rugose, truncate or subcordate 
at the base ; petioles 3-10 mm. long: peduncles elongated, 8-20 cm. long, erect or nearly 
so, slender but not filiform: calyx nied. lobes triangular, acuminate, about as long as 
the tube: corolla orange, 3-4 cm. wide: carpels nearly 3 mm. long, glabrous, slightly 
pitted, minutely beaker. 
In dry soil, Texas. Spring to fall. 
19. Sida filipes A. Gray. Perennial, velvety tomentose. Stems erect, 5-9 dm. tall, 
paniculately branched : leaf-biades narrowly oblong to lanceolate, 2-7 cm. long, acutish 
or obtuse, serrate or crenate-serrate, rugose ; petioles 1-3 mm. long: peduncles filiform, 
surpassing-the leaves: flowers nodding: calyx subglobose in the bud, not angled ; lobes 
ovate, about 2 mm. long, obtuse: corolla violet-purple, about 1 cm. wide: carpels about 
7, 2.5 mm. long, pale, pitted, obtusely beaked. 
In dry soil, Texas and Mexico. Summer. 
9. MALACHRA L. 
Herbs or shrubby plants, with hispid or rigid-pubescent foliage, the hairs sometimes 
stinging. Leaves alternate: blades with angled or rounded lobes, petioled. Flowers per- 
fect, in dense axillary or terminal head-like clusters. Involucres of 3-5 bracts, often 
variegated or sometimes wanting. Sepals 5, partially united: lobes 3-nerved. Petals 
white, yellow or red. Carpels 5, 1-celled. Ovules solitary. Mature carpels 5, separating 
from the central axis, indehiscent or valvate at the ventral angle. Seeds reniform, ascend- 
ing. The plants flower throughout the year. 
Foliage densely stellate-pubescent in addition to hirsute or hispid : upper leaf-blades net lopod: at the 
Foliage merely hirsute or hispid : upper leaf-blades lobed at the base. 2. M. urens. 
1. Malachra capitàta L. Hispid, and minutely and densely pubescent with stellate 
hairs. Leaf-blades suborbicular, to ovate-orbicular, 1.5-4 cm. in diameter, crenate, or the 
lower ones sometimes palmately 3-5-lobed ; petioles shorter than the blades : flower-clusters 
peduncled : bracts of involucres variegated with white and purple, rather conspicuous, the 
outer suborbicular, the inner broadly ovate, acute: calyx-lobes ovate-lanceolate, obtuse: 
petals yellow: carpels 3 mm. long, nearly glabrous, slightly shorter than the calyx-lobes., 
In dry soil, Texas and Mexico. Also in tropical America. 
2. Malachra ürens Poit. Hispid, usually without fine stellate hairs. Leaf-blades 
ovate or lanceolate, angulately 3-5-lobed or somewhat hastate with rounded basal Dore 
3-10 cm. long, dentate, truncate or rarely cordate at the base; petioles shorter than the 
blades: flower-clusters nearly sessile or short-peduncled : bracts of the involucres triangu; h 
or hastate, long-acuminate, ciliate-dentate, the base or often the whole surface variegated wit 
purple: calyx-lobes subulate-tipped : petals red: carpels 3-3.5 mm. long, puberulent or 
glabrate, much surpassed by the calyx-lobes. 
In sand, Keys of Florida. Also in the West Indies. 
10. URENA L. 2 
Shrubs or shrubby herbs, with rigid branches and pubescent foliage. Leaves alternate: 
blades angled or lobed. Flowers perfect, often inconspicuous, sessile or short-peduncled, 
in the axils of the leaves, sometimes clustered. Involucres wanting. Involucels of 5 more 
or less united bractlets. Sepals 5, united below, often adnate to the involucel. E etals 5 
yellowish or purplish. Carpelsl-celled. Stigmas capitate. Ovules solitary, ascending. 
Mature carpels separating from the central axis, indehiscent, bristly with barbed awns, thus 
forming a bur-like fruit, or sometimes unarmed. 
