SCROPHULARIACEiE. 247 



* Calyx prismatic and barely 5-toothed, or rarely campanulate and hardlv 5-cIeft • corolla 

 more or less bilabiate : stamens 4. 



13. MIMULUS.' Corolla with either elongated or short tube; upper lip 2- and the lower 

 3-lobed or parted ; the former often erect and the sides turned back ; a pair of palatine 

 ridges (either bearded or naked and more or less intruded) running down the lower • 

 side of the throat. Stamens inserted low within the throat or on the tube. Anthers 

 generally approximate in pairs, on filiform filaments; their cells divergent, either distinct 

 or confluent at the apex. Style filiform : stigma bilamellar, or sometimes peltate by the 

 union of the two dilated lips, or rarely even funnelform. Capsule enclosed in the 

 calyx, loculicidal ; the placentas either firmly united, or in one section barely contiguous 

 in the axis. 



* # Calyx 5-parted : corolla more or less bilabiate : stamens 4, inserted below the throat 

 included : anther-cells distinct. 



-k- Sepals narrow and nearly alike : capsule septicidal or septifragal. 



14. STEMODIA. Corolla with cylindraceous tube, somewhat erect and hardly 2-lobed 

 upper lip, and more spreading lower one. Anther-cells separate and stipitate. Stigma 

 2-lobed. Capsule with valves soon 2-parted : placentas left in the axis. 



15. CONOBEA. Corolla nearly of the preceding, or more equally 5-lobed. Anther-cells 

 distinct but not stipitate, parallel. Stigma bilamellar. Capsule septifragal ; valves en 

 tire or rarely 2-cleft. Seeds striate. 



+- ■*-- Sepals unequal and imbricated ; the posterior one considerably or much broader than 

 the anterior; the two lateral interior and usually much narrower: capsule septicidal or 

 loculicidal ; the valves entire or 2-parted, separating from the undivided placentiferous 

 column. 



16. HERPESTIS. Corolla with short cylindraceous tube, and spreading lips; upper 

 emarginate or 2-lobed ; lower 3-lobed, plane. Anther-cells parallel or divergent. Cap- 

 sule globose or ovate. 



* * * Calyx 5-parted or deeply 4-D-lobed : antheriferous stamens only 2, 



-i- The posterior pair ; the anterior pair sterile rudiments or sometimes wanting : flowers 

 not minute : corolla manifestly bilabiate ; upper lip entire or 2-lobed ; lower 3-cleft : 

 sepals narrow, little unequal : stigma dilated and mostly bilamellar. 



17. GRATIOLA. Corolla with cylindraceous tube and lips nearly of equal length. Sta- 

 mens both fertile (with anther-cells distinct) and sterile inserted below the throat and in- 

 cluded. Capsule both loculicidal and septicidal ; valves separating from the placentif- 

 erous column. Seeds striate and transversely reticulated. 



18. IL.YSANTHES. Corolla with cylindraceous tube, or more dilated throat; upper lip 

 erect and concave, 2-lobed; lower larger, spreading, with 3 broad nearly equal lobes. 

 Fertile stamens inserted rather low down and somewhat included : sterile filaments 

 inserted at the orifice and forked ; one fork glandular and obtuse ; the other smooth and 

 naked, acute, sometimes reduced to a mere tooth, sometimes more elongated and even 

 bearing the rudiment of an anther. Capsule ovoid or oblong, septicidal or septifragal ; 

 the valves entire, at length separating from the placentiferous column. Seeds foveolate- 

 rugose. 



■f— The anterior pair of stamens antheriferous, at least only a single pair antheriferous, 

 and no rudiments of sterile ones : flowers minute : corolla only 4-lobed : anthers short, of 

 roundish distinct cells. 



19. MICRANTHEMUM. Calyx usually 4-clef t or 4-lobed. Corolla with very short tube, 

 obscurely bilabiate ; its upper lip short or almost none ; the lower 3-lobed and the middle 

 lobe longer. Stamens inserted in the throat : filaments short, dilated or appendaged at 

 base. Style short : stigma dilated or 2-lobed. Capsule globular, thin, becoming 1-celled 

 by the vanishing of the partition, leaving the several-many-seeded placenta in the axis. 

 Seeds oblong, minute. 



30. AMPHIANTHUS. Calyx 5-parted, unequal. Corolla funnelform, with spreading 4- 

 cleft limb; lobes rounded, one of them larger. Stamens on the tube of the corolla, 

 included : filaments filiform, not appendaged. Style subulate : stigma minutely 2-cleft. 

 Capsule obcordate, compressed, loculicidal ; valves bearing the partition. Seeds numer- 

 ous, linear-oblong, striate, transversely rugulose. 

 # # * # Calyx and corolla both 5-lobed and nearly regular : antheriferous stamens 4, 

 nearly equal : no sterile filament. 



21. LIMOSELLA. Calyx campanulate; the lobes short. Corolla between rotate and ■ 

 campanulate ; its lobes oblong or ovate. Stamens borne on the tube of the corolla : fila- 

 ments slender, unappendaged ; anthers by confluence l-cel!ed. Style short: stigma de- 

 pressed-capitate. Capsule globose-ovoid, 2-celled only at base; the large central pla- 

 centa many-seeded. Seeds ovoid, rugulose. 



