XCII. SCROPHULARIACEZ (HEMSLEY AND SKAN). 265 
Flowers sessile ; stamens 2; anther-cells unequal ; 
capsule 1-celled  . : . - Q . 30. DINTERA. 
Flowers stalked ; stamens 4 or 3 (sometimes 2 or 5) ; 
anther-cells equal ; capsule 2-celled at least in 
the lower part. 
Leaves opposite, sessile; calyx 4-5-partite ; 
anthers distinctly 2-celled zs : . 31. HyDRANTHELIUM. 
Leaves usually in radical tufts, long-stalked ; 
calyx 5-toothed ; anthers 1-celled by con- 
fluence : : : . 32. LIMOSELLA. 
Trise VIII. Digitalese.—Leaves alternate or opposite. Corolla-lobes flat, 
“spreading or the upper suberect, the upper inside in bud. Anther-cells closely 
contiguous at the apex and very often confluent, usually divergent at the base, 
sometimes completely confluent. Herbs, or sometimes shrubs, not parasitic. 
Stamens 4 or sometimes 5. 
Prostrate herbs; leaves long-stalked, suborbicular; 
calyx campanulate, 4—8-fid . . : . 33. SIBTHORPIA, 
Erect undershrubs; leaves shortly stalked, linear 
to oblong-lanceolate; calyx 4-5-partite. 
Corolla 4-fid ; capsule septicidal : . 84, SCOPARIA. 
Corolla 5-fid; capsule loculicidal . : . 35. CAPRARIA. 
Stamens2 : ; : ° : ° . 36. VERONICA. 
Trine IX. Gerardieve.— Leaves (the lower at least) opposite. Corolla-tube 
long or sometimes short, not saccate or spurred at the base; lobes flat, usually 
spreading, one or both of the upper inside in bud. Stamens 4, didynamous or 
rarely equal, rarely 2; anthers equally 2-celled, sometimes 1-celled, sometimes 
with a fertile cell and a variously modified sterile or nearly sterile cell ; connective 
sometimes 2 branched, 1 branch bearing a fertile cell and the other a dise-shaped 
appendage. Herbs or undershrubs, often parasitic or semt-parasitic. 
* Anthers with 2 fertile equal or nearly equal cells. 
Calyx enlarged and inflated in fruit . 5 . 87. MELASMA. 
Calyx not enlarged nor inflated in fruit. 
Pedicels ebracteolate ; corolla about 1 in. long ; 
tube very much longer than the calyx . 39. GERARDIINA, 
Pedicels bibracteolate ; corolla usually less than 
3 in. long ; tube shorter or scarcely longer 
than the calyx. 
Parasitic; stems rather stout; leaves usually 
broad and toothed or sometimes reduced 
tu scales; flowers often crowded . . 388. ALECTRA. 
Not parasitic ; stems very slender, with almost 
filiform branches; leaves narrowly linear, 
entire; flowers not crowded . ‘ . 53. 
** Anthers 1-celled or with 1 fertile cell and 1 variously 
modified sterile or nearly sterile cell or 
appendage. 
T Anthers all 1-celled. 
Corolla-tube cylindric, straight or sometimes 
slightly curved. 
Capsule oblong or ellipsoid, straight; calyx 
tubular. 
Corolla often small; lobes equal or nearly 
equal; capsule dry, dehiscent . 40. BUCHNERA. 
MICRARGERIA. 
