SCROPHULARIACEAE (FIG WORT FAMILY) 199 



A. Herbs. 

 B. Leaves alternate. 



C. Vines; leaves ren if orm -orbicular, palmately veined, coarsely dentate or lobed. 

 W. Planted along walls. (Gk. kymbalon = a cymbal; referring to the leaf 

 form.) Cymbalaria cymbalaria (KENILWORTH IVY) 



CC. Leaves not as above in all points. 



D. Mud plants, creeping or floating; leaves glabrous, nearly all basal, entire, 

 linear to oblong. W. E. (L. limus = mud, sella = a seat; because it is 

 a stemless mud plant.) Limosella aquatica (MUD WORT) 



DD. Not as above in all points. 

 E. Corolla spurred or saccate at base on the lower side. 



F. Leaves sessile; corolla spurred at base. LINARIA (p. 201) 

 FF. Leaves short-petioled; corolla merely saccate at base. 



ANTIRRHINUM (p. 201) 



EE. Corolla neither spurred nor saccate at base on the lower side, but some- 

 times saccate at base on the upper side. 



G. Calyx s-toothed or -lobed. 



H. Corolla rotate; anther-bearing stamens 5. VERBASCUM (p. 201) 



HH. Corolla tubular; anther-bearing stamens 4, rarely 5 in Pentstemon. 



I. Leaves entire to dentate; corolla not produced into a long projection. 

 J. Leaf blade 0.6-10 cm. long; 5th stamen represented by a filament on 



the corolla. PENTSTEMON (p. 202) 



JJ. Leaf blade 8-25 cm. long; 5th stamen not represented at all. W. 



Medicinal plant. (L. digitalis = belonging to the finger; the corolla 



suggests a glove finger.) Digitalis purpurea (FOXGLOVE)- 



II. Leaves either pinnately -lobed or -parted, or else corolla produced into a 

 long and elephant-trunk-like projection. PEDICULARIS (p. 208) 



GG. Calyx i-4-toothed or -lobed. 



K. Corolla nearly regular, rotate or short-campanulate, never yellow. 

 L. Leaves chiefly scattered along the stem, at least the lower opposite, 

 entire to toothed; spikes or racemes terminal or axillary; annual or peren- 

 nial. VERONICA (p. 204) 

 LL. Leaves chiefly basal, all alternate, toothed to divided; spikes or racemes 

 terminal; perennial. SYNTHYRIS (p. 205) 

 KK. Corolla distinctly 2-lipped, tubular, often yellow. 

 M. Leaves entire to pinnately or palmately parted into 3-11 long lobes, 

 sometimes the lobes again lobed; upper lip of corolla not elephant-trunk- 

 like. 



N. Capsule few-seeded; calyx cleft down i side and apparently of 2 

 sepals; lips of the corolla nearly equal. ADENOSTEGIA (p. 208) 



NN. Capsule many-seeded; calyx cleft down i or 2 or 4 sides and appar- 

 ently of 4 sepals or rarely of 2 sepals. 

 O. Lips of the corolla nearly equal in length; calyx 2- or 4-toothed. 



ORTHOCARPUS (p. 207) 

 OO. Lips of the corolla unequal in length; calyx 4-toothed. 



CASTILLEJA (p. 205) 



MM. Leaves either serrate and the upper lip of the corolla prolonged into 

 an elephant-trunk-like projection, or else leaves pinnately more than 

 iS-lobed or -parted into rather short wide lobes. PEDICULARIS (p. 208) 



