380 _ 
Involucral bracts ovate and concave, with 
short pungent points, margins not inrolled : 
Leaves ovate-elliptic, shortly petiolate, 
lower surface tomentose; heads ee 
than broad; Madagascar - 22. incana. 
Leaves linear- lanceolate, alnioat sensile: 
heads about as long as broad ; “Madagascar 23. Cowani. 
Section III. PLumosag. 
Leaves dimorphic; the lower few and ob- 
ovate, petiolate; the upper very numerous 
and densely imbricate, lanceolate with 
pungent points, resembling and gradually 
merging into the saunas bracts; heads 
large, solitary, terminal; South Africa - 24. argyrophylla. 
Leaves not dimorphic; more or less sharply 
differentiated from the involucral bracts : 
Leaves long attenuated to the base, and 
usually much broader in the upper part, 
mostly oblanceolate or obovate : 
Plants 1 ft. or more in height 
Heads usually few; leaves linear to 
obovate-oblanceolate, with numerous 
spreading lateral nerves; ee 
Africa - - 25. sessiliflora. 
Heads soliiary | or up rs Ares: ae 
obovate with few ascending lateral 
nerves; South Africa - - 26. Zeyheri. 
Heads numerous in a panicle ; eves 
oblanceolate; South Africa = - - 27. thyrsiflora. 
Plants — two inches in mee 
Trop. Afric - - 28. nana. 
Leaves quite eae with beaal, hae 
bases, sometimes decurrent, mostly linear 
or linear-oblon 
Outermost Staind bracts reflexed ; 
heads pedunculate ; leaf-bases clasping : 
Leaves acute, canous below, margins 
revolute ; peduncles not bracteate ; 
involueral bracts somewhat flat, often 
with markedly membranous margins ; 
Trop. Africa - : - - - 29. Kirkit. 
Leaves Hinear to sub-spathulate, ‘ 
argins minutely 
serrate ; Somaliland - - 30. gnaphaloides. 
Leaves obtuse, thinly hairy batiw; 
peduncles bracteate: flower heads 
in a dense panicle ; Belgian Congo - 31. Poggei. 
Leaves acute, becoming glabrous on 
both surfaces, margins not revolute ; 
peduncles bracteate;. involucral 
bracts concave; Natal - . - 32. speciosa. 
