Rhumphicarpa.| XC. SCROPHULARIACE® (HEMSLEY AND SKAN.) 419 
Leaves only about twice as long as broad ; 
corolla-tube 8-9 lin. long ; limb 11-12 
lin. in diam. : : . 7, RB, suffruticosa, 
Capsule broadly obovoid, subtruncate or ob- 
cordate at the apex, not beaked —. . 8. R. cameroniana. 
Leaves quite entire, linear . : : : . 9. R. JSamesii, 
Corolla-tube not gibbous. 
Flowers axillary ; uppermost leaves usually without 
flowers itt their axils; stems more or less 
procumbent. 
Leaves 5-14 lin. broad; pedicels 9-24 lin. long ; 
calyx-lobes broadest in the middle. . 15. R. herzfeldiana. 
Leaves 1~5 lin. broad ; pedicels 2-9 lin. long; 
calyx-lobes broadest at the base. 
Stems numerous; calyx divided below the 
middle ; corolla-lobes oblong or ovate . 16. R. multicaulis. 
Stems few; calyx not divided below the 
middle ; corolla-lobes broadly obovate . 17. R. montana. 
Flowers in terminal racemes or in the axils of the 
uppermost leaves ; stems erect except in R. 
ajugifolia. 
Calyx pubescent, often densely. 
Pedicels usually about 9 lin. long . ‘ . 18. R. Heuglini, 
Pedicels up to 1} lin. long. 
Stems decumbent; plant densely long- 
pilose : : : : : ¢ 
Stems erect; plant shortly pilose. 
Leaves 3-8 lin. long, 1-23 lin. broad, 
often entire. 
Plant up to 3} ft. high; corolla-tube 
8-10 lin. long; calyx-lobes 
deltoid, 14-2 lin. long . . 10. R. asperrima, 
Plant only a few inches high ; corolla- 
tube 63~73 lin. long ;  calyx- 
lobes narrowly triangular, }~1} 
lin.long . : : : . 11. R. Ellenbeckii. 
Leaves 6—18 lin. long, 2-6 lin. broad, all 
more or less toothed. 
Flowers distant ; calyx 43-5} lin. - 
long; lobes 23 lin. long . 12. R. Volkensiz. 
Flowers close together; calyx 3? lin. 
long; lobes 1} lin. long. . 18. BR. spicata. 
Calyx glabrous or nearly so. 
Pedicels 2-18 lin. long ; calyx 4—5 lin. long ; 
corolla-limb 3—2 in, in diam. 
Upper leaves and calyx-lobes distinctly 
hook-like . : : : : . 
Upper leaves and calyx-lobes not hook-like 
or less distinctly so : : . 19. R. tubulosa. 
Pedicels about 4 in. long; ealyx 7-11} lin. 
long ; corolla-limb 3 in. long, 23 in. 
broad i - . 21. R. aquatica. 
14. R. ajugifolia, 
20. R. hamata. 
1. R. fistulosa, Benth. in DC. Prodr. x. 504. An erect usually 
very much branched herb, from a few inches up to 4 ft. high, usually 
