350 Scrophulariaceae 
BB. Plant floating or creeping; leaves alternate but in a basal tuft, 8—12 mm. long, 
entire; flowers solitary on scape-like peduncles, about 2 mm. long, not yellow nor 
blue; anther-bearing stamens 4. LIMOSELLA (p. 352) 
DIPLACUS 
Shrubs; ours 6—18 dm. high, nearly glabrous but the young parts glutinous. 
Leaves opposite; in ours narrowly oblong to linear, entire to denticulate, 2.5—_10 cm. long, 
glabrous above, pubescent beneath with branched hairs. Flowers large, 3.5—5 cm. 
(ours), yellow or orange or red, solitary in the leaf-axils, peduncled. Calyx tubular, 
2.5 cm. long (ours), 5-toothed. Corolla tubular, 2-lipped; upper lip 2-lobed; lower lip 
3-lobed. Anther-bearing stamens 4. Capsule linear-oblong, with woody tubercle at tip, 
boat-shaped when it splits. (Gk. dis—2, plakos—=a placenta; the splitting of the capsule 
shows 2 conspicuous placentae.) U. 
D, glutinosus Nutt. 
MIMULUS MONKEY FLOWER 
Herbs, annual or perennial. Leaves opposite. Flowers mostly showy, either soli- 
tary in the leaf-axils or else in terminal racemes by the reduction of the upper leaves to 
bracts. Calyx tubular, persistent, almost terete to 5-ribbed, 5-toothed, upper tooth usually 
largest. Corolla irregular to nearly regular; tube cylindric; limb 2-lipped; upper lip 
erect or reflexed, 2-lobed; lower lip spreading, 3-lobed. Stamens 4, 2 shorter. Stigma © 
2Z-lobed. Capsule obtuse, not exceeding the calyx. (Gk. mimo—an ape; from the 
grinning corolla.) 
A. Flowers yellow. 
B. Leaves with 3 or more veins from the base. 
C. Stems leafy, not scapose, rarely only 1|-flowered. 
D. Corolla 25—50 mm. long; calyx shorter than the corolla, its lobes equal 
or unequal. 
E.. Plant not viscid-hairy. 
F. Plants 15—60 cm. high, without rhizomes; stems more than 1|-flow- 
ered. 
G. Leaves oblong to orbicular; plant glabrous thruout or pubescent to 
puberulent in the inflorescence; capsule oblong; seeds oblong. W. C. 
E. (M. hirsutus; M. grandiflorus. ) 
M. langsdorfii Donn. 
GG. Leaves oblong-lanceolate; plant glabrous thruout; capsule obo- 
vate; seed obovate. W. 
M. scouleri Hook. 
FF. Plants 2—4 cm. high, with rhizomes; stems mostly 1-flowered. C. 
M. alpinus Pip. 
EE. Plant viscid-hairy, 10—20 cm. high, with rhizomes. W. E. 
M. implexus Gr. 
DD. Corolla 8—16 mm. long; calyx shorter than the corolla, its lobes unequal. 
H. Stems stout, 4-angled, branching from the base. W. C. E. 
M. nasutus Gr. 
HH. Stems slender, terete, mostly simple. E. 
M. microphyllus Benth. 
DDD. Corolla 4—6 mm. long; calyx longer than the corolla, its lobes nearly 
equal. E. M. breviflorus Pip. 
CC. Stem leafless, scapose, |-flowered. C. FE. (M. pilosellus. ) 
M. primuloides Benth. 

