



Malvaceae 255 
E. Stems 4—7 cm. high; carpels glabrous. E. 
S. nervata Nels. 
EE. Stems 6—15 dm. high; carpels pubescent. W.E. (S. malvaeflora for 
our region.) S. campestris Gray 
DD. Petals red; calyx 12—15 mm. long; mature carpels smooth. W. 
S. hendersoni Wats. 
MALVASTRUM FALSE MALLOW 
Perennial (ours), densely and silvery stellate pubescent (ours). Leaves entire (not 
ours) or serrate or divided. Flowers axillary or termnial, solitary or in racemes (ours), 
red, 12 cm. wide (ours) ; pedicels short. Involucre none or of 1—3 small bracts. Car- 
pels 5—many (ours 10—15), 1—2-ovuled; stigmas head-like. Fruiting carpels in- 
dehiscent (ours) or imperfectly 2-valved, falling away from the axis, pointed or beaked, 
rugose-reticulate. (Malva, +-Gk. astron—a star. Why?) E. 
M. coccineum Gray 
SPHAERALCEA GLOBE MALLOW 
Perennial. Leaves angular or lobed, palmately veined. Flowers mostly showy, 
solitary or fascicled or in terminal racemes. Involucre 2—3-leaved, setaceous, often de- 
ciduous. Stamen-column simple, filaments distinct above, numerous. Styles 5 or more; 
stigmas head-like. Ovules 1|—3 in each carpel. Fruit conical; carpels 2-valved above, 
upper part smooth, lower part rugose-reticulate on the sides. Seed reniform. (Gk. 
sphaira—a sphere, alkea—=a mallow; referring to the commonly spherical fruit. ) 
A. Leaves canescent, 2.5——5 cm. long, 3—5-lobed or not lobed: flowers usually scar- 
let; calyx-lobes 4—6 mm. long. E. 
S. munroana Spach 
AA. Leaves not canescent, 5—15 cm. long, 3—7-lobed or -cleft; flowers usually rose- 
colored. 
B. Calyx-lobes ovate, 4—6 mm. long; pedicels usually less than 6 mm. long. E. 
(S. acerifolia; probably S. rivularis diversa.) 
S. rivularis Torr. 
BB. Calyx-lobes caudate-acuminate, 15-25 mm. long; pedicels 10 mm. or more 
long. E. (S. leptosepala for our region.) 
S. longisepala Torr. 
SIDA OBLIQUE MALLOW 
Annual or perennial, pubescent or tomentose. Leaves pinnately or palmately 
veined. Flowers white or yellow, ‘axillary, solitary or fascicled. Calyx with or without 
an involucre. Stamen-tube simple. Petals oblique. Styles 5 or more; stigmas head-like. 
Carpels 5 or more (6—10 in ours), I-seeded, separating from the axis, indehiscent or 
2-valved. ( Greek name of some plant.) 
A. Plant scurfy-canescent, perennial; leaves reniform to ovate-cordate; calyx subtended 
by an involucre of 2—3 bractlets. E. 
S. hederacea Torr. 
AA. Plant glabrous or puberulent, annual; leaves lanceolate to ovate-cordate; calyx not 
subtended by an involucre. W. (S. spinosa for our region.) 
S. acuta Burm. 

