_ 74 — 



7. a. Corolla light-blue; tube wide- cylindrical, 1 7 2 -2 times as long as the calyx, 



0.5-0.9 c.M. long; panicles elongated; leaves glabrous on both sides, except 



on the nerves 6. C. serraium 



b. Corolla white or pale-yellow; tube slender, very much elongated, many times 

 as long as the calyx, 7-11 c.M. long; panicles short, umbelliform ; leaves 

 densely hairy on both sides _ . . 7. C. Incisum 



8. a. Well develloped leaves with the largest breadth at or above the middle, 



the base-nerves not stronger than the higher ones; base of leaves acuminate 



or cuneate, rarely subcordate .9 



b. Well develloped leaves with the largest breadth below the middle; base- 

 nerves much stronger than the higher ones (subpalmi-nerved); base of leaves 

 obtuse, rounded or cordate . . . - .28 



9. a. Corolla dark-red, or crimson, climbing shrubs 10 



b. Corolla white or light-yellow, rarely from flesh- to orange-coloured; erect 



shrubs, or small trees - . . .11 



10. a. Corolla-tube 3 or more times as long as the calyx, almost glabrous outside; 



calyx small, red, 0.5 c.M. long or smaller . . . . 8. C. splendens 

 b. Corolla-tube less than twice as long as the calyx, softly pubescent outside ; 

 calyx large, white, rarely purple, 1.5-2.5 c.M. long . . 9. C. Thomsonae 



11. a. Corolla-tube not longer than 5 c.M. usually less than 4.5 c.M, . . .12 

 b. Corolla-tube more than 5 c.M. long, rarely less than 6 c.M. ... .22 



12. a. Corolla glabrous outside . . . . . . 10. C. laevifolium 



b. Corolla with dense glanduliferous hairs outside .13 



13. a. Leaves glabrous on both sides; corolla-lobes unequal; obliquely spreading . 14 

 b. Leaves pubescent on both surfaces, or at least on the lower one; corolla- 

 lobes equal and conform, sub-radially spread . . . , . . .15 



14. a. Inflorescences pendulous, racemose; calyx large and inflated, glabrous outside 



corolla-tube 1-1.5 c.M. long, less than twice as long as the calyx 11. C, nutans 

 b. Inflorescences erect, wide-paniculate; calyx small, hairy outside; corolla-tube 

 2-3 c.M. long, 2-4 times, as long as the calyx 12. C. macrophyllum 



15. a. Inflorescences pendulous, umbelliform or sub-capitate, densely and many- 



flowered; corolla flesh-coloured 13. C. deflexum 



b. Inflorescences erect, laxely paniculaeformous, leafed or not so .16 



16. a. Calyx with the segments narrow, linear or subulate; calyx lobed always 



almost down to the base .17 



b. Calyx with the segments broadly ovate or oblong, acute or obtuse; calyx 

 lobed for , / 2 - 2 /3 down, rarely (in C. fortunatum L.J nearly down to the 

 base 19 



17. a. Leaves almost quite irregularly crenate-serrate, base abruptly and shortly 



acute - attenaute, apex obtuse; surface rugose; corolla - tube glubrous 



inside 14. C. calamitosum 



b. Leaves wholly entire or irregularly and distantly serrate above the middle 

 towards the top; base cuneate, rounded or cordate; apex shortly acuminate; 

 corolla-tube hairy inside . 18 



18. a. Small shrubs, usually less than 1 M. high., sometimes reaching IV2M.; 



stern fistular and (always?) inhabited by ants. Leaves elliptic or elliptic- 

 obovate, broadly rounded or cordate at the base; margins entire or undulate- 

 denticulate; panicles thyrsoid; flowers bright - yellow, tingel with red 



, 15. C. breviflorum 



b. Shrubs 1—3 M. high. ; stems not fistular; leaves oblong or obovate, cuneate, 

 obtuse or rounded at the base; margins irregularly distantly serrate above 

 the middle towards the top, rarely subentire: flowers white or pale-yellow. 

 ... .• . . . . 16. C. disparifolium. 



19a. Calyx campanulato-inflate, glabrous or sparsely hairy outside; margins of 



leaf irregularly toothed, rarely subentire * 20 



