378 SCKOPHULARlACE^. (fIGWORT FAMILY.) 



Tribe I. VEKBASCE^. Corolla rotate. Flowers racemose. Leaves alternate. 



1. Verbascum. Stamens 5, all with anthers, and 3 or all with bearded tilaments. 

 Tribe II. ANTIKKHINE^. Corolla tubular, with a spur or sac at the base below, 



the throat usually with a palate. Capsule opening by chinks or holes. Flowers in sim- 

 ple racemes or axillary. Lower leaves usually opposite or whorled. Stamens 4. 



2. liinaria. Corolla spuiTed at base ; the palate seldom closing the throat. 



3. Antirrhinum. Corolla merely saccate at base; the palate closing the throat. . 

 Tribe III. CHELONE^. Corolla tubular, or 2-lipped, not spurred nor saccate below. 



Capsule 2-4-valved. Leaves opposite Inflorescence usually compound, of small axil- 

 lary spiked or racemed or umbel-like clusters or cjTnes, or wlien reduced to a single 

 flower the peduncle mostly 2-bracteate. Stamens 4, and usually a rudiment of the fifth. 



4 Scrophularia. Corolla inflated, globular or oblong, with four erect lobes and one 



spreading one Rudiment of the sterile stamen a scale on the upper lip. 



5 Collinsia. Corolla 2-cleft, the short tube saccate on tlie upper side ; the middle lobe of 



I he lower lip sac-like and enclosing the declined stamens. 

 6. Chelone. Corolla tubular inflated above. Sterile stamen shorter than the others. 

 Anthers very woolly. Seeds winged. 



7 Pentstemon. Corolla tubular. Sterile stamen about as long as the rest. Seeds wingless. 

 Tribe IV. GKATIOLE^. Corolla tubular, not saccate nor spurred. Capsule 2- 



valved Flowers solitary in the axils of bracts or leaves . peduncles naked (or 2-bracte. 

 olate in n. 12). Leaves all or the lower ones opposite. No trace of a fifth stamen. 

 * Stamens 4, all anther-bearing and similar. 



8 Mimulus. Calyx prismatic, 5-angled, 5-toothed. Corolla elongated. 

 9. Conobea. Calyx 5-parted, the divisions equal. Corolla short. 



10. Herpestis. Calyx o-parted, unequal, the upper division largest. Corolla short. 



11 Liiniosella. Calyx 5-toothed. Corolla open bell-shaped, 5-cleft, nearly regular. Leaves 

 alternate or fascicled, fleshy. Dwarf aquatic or marsh plant. 

 * * Anther-bearing stamens 2 ; usually also a pair of sterile filaments. 

 12. Gratiola. Calyx 5-parted. Stamens included . the sterile pair short or none. 

 13 Ilysanthes. Calyx 5-parted. Stamens included . the sterile filaments protruded. 



14. Micranthemum. Flowers minute. Calyx 4-toothed or cleft. Upper lip of corolla 



short or none. Filaments with an appendage ; sterile pair none Dwarf aquatic. 



11. RHINANTHIDEiE. Under lip or the lateral lobes of the corolla cover- 



ing the upper in the bud. Capsule commonly loculicidal. 



Tribe V. DIGITALE^. Corolla wheel-shaped, salver-shaped, or bell-shaped. Sta- 

 mens 2 or 4, not approaching in pairs nor strongly didjmamous ; anthers 2-celled. 



15. Synthyris. Calyx 4-parted. Corolla bell-shaped, 2-4-lobed. irregular Stamens 2 



or 4 Leaves alternate. Flowers racemed. 



16. Veronica Calyx 4-( rarely 3-5-) parted. Corolla wheel-shaped or salver-shaped, almost 



regular Stamens 2. Leaves chiefly opposite or whorled. Flowers racemed. 

 Tribe VI. GEKAKDIE^E. Corolla with a spreading and slightly unequal 5-lobed 

 limb Stamens 4, approximate in pairs. Leaves opposite, or the uppermost alternate. 

 « Corolla salver-shaped. Anthers 1-celled. Flowers in a spike. 



17. Buchnera. CaljTC tubular, 5-toothed. Limb of the elongated corolla 5-cleft. 



* * Corolla bell-shaped to funnel-form ; anthers 2-celled. 

 IS. Seymeria. Stamens nearly equal. Tube of the corolla broad, not longer than the lobes. 



19. Gerarclia. Stamens strongly unequal, included. 



Tribe VII. EUPHRASIES. Corolla tubular, obviously 2-lipped ; the upi^er lip nar- 

 row, erect or arched, enclosing the 4 usually strongly didynamous stamens. 

 ♦ Anther-cells unequal and separated Capsule many-seeded, 



20. Castilleia. Calyx tubular, cleft down the lower, and often also on the upper, side. 



Upper lip of corolla elongated ; the lower short, often very small. 



