XCII. SCROPHULAKIACE.E (HEMSLEY AND SKAN). 265 



Flowers sessile ; stamens 2 ; anther-cells unequal; 



capsule 1-celled . . . - ' .30. Dinteba. 



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 . . .31. Hydeanthelitjm. 

 Leaves usually in radical tufts, long-stalked ; 

 calyx 5-toothed ; anthers 1-celled hy con- 

 fluence 32. LlllOSELLA. 



Teibe VIII. Digitalese. — Leaves alternate or opposite. Corolla-lobes fiat, 

 ■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. Sibthokpia. 



Erect undershrubs ; leaves shortly stalked, linear 

 to oblong-lanceolate ; calyx 4-5-partite. 

 Corolla 4-fid; capsule septicidal . . . 34. Scoparia. 



Corolla 5-fid ; capsule loculicidal . . . 35. Capraeia. 



Stamens 2 . . . . . . . .36. Veronica. 



Teibe IX. Gerardieae. — Leaves (the lower at least) opposite. Corolla-tube 

 long or sometimes short, not saccate or spurred at the base; lobes fiat, usually 

 spreading, one or both of the tipper 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 disc-shaped 

 appendage. Herbs or undershrubs, often parasitic or semi-parasitic. 

 * Anthers with 2 fertile equal or nearly equal cells. 



Calyx enlarged and inflated in fruit . . . 37. Melasma. 

 Calyx not enlarged nor inflated in fruit. 



Pedicels ebracteolate ; corolla about 1 in. long ; 



tube very much longer than the calyx . 39. Geeaediina. 



Pedicels bibracteolate ; corolla usually less than 

 i in. long ; tube shorter or scarcely longer 

 than the calyx. 

 Parasitic; stems rather stout; leaves usually 

 hroad and toothed or sometimes reduced 

 to scales; flowers often crowded . . 38. Alectra. 



Not parasitic ; stems very slender, with almost 

 filiform, branches; leaves nairowly linear, 



entire; (lowers not crowded . . . 53. Miceaegebia. 



** Anthers 1-celled or with 1 fertile cell and 1 variously 

 modified sterile or nearly sterile cell or 

 appendage. 

 f 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. Buchneea. 



