PROTEACEAE 143 



KEY TO THE GENERA. 



(See also Flor. Cap. Vol. v, Sect, i, 502.) 

 Tribe I. Proteeae. 

 Perianth tubular, the segments partly or completely separating. Anthers 

 sessile, inserted at the base of the spoon-shaped limb of the perianth-segments. 



A. Flowers regular, by abortion unisexual. 



a. $ flowers in cylindrical spikes ; % flowers capitate with linear bracts. 



Endemic. Ca*. 3 species. 1. Aulax Berg. 



Flor. Cap. 505. 



b. Both kinds of flowers capitate ; the % inflorescence developing into 



a cone-like, compact head with broad scales. 

 (Fig. 76 ; Plates 28, 29.) 



Endemic. 55 species, a few eastern. 



2. Leucadendron Berg. 

 Flor. Cap. 509. 



B. Flowers bisexual. Hypogynous scales 4. 



a. Perianth irregular, 2-labiate ; 1 segment free, the lower 3 more or 



less cohering. 



I. Flowers and fruits capitate. 



1. Antheriferous limbs of the 3 lower perianth-segments 



cohering. Nuts bearded and tailed by the persistent style. 

 (Figs. 76—78 ; Plates 22, 29, 30, 35.) 



Over 100 species of which about 85 in S. A. 



3. Protea L. 

 Flor. Cap. 552. 



2. Limbs of all perianth-segments separating. Nuts smooth, 



not tailed. (Plates 31, 36.) 



31 S. A. species, 1 in Rhodesia, 1 Abyssinian (?). 



4. Leucospermum R. Br. 

 Flor. Cap. 610. 



II. Flowers and fruits spicate. Nuts bearded. (Plate 34 ; Fig. 76.) 



14 species, 5 in S. A., 1 in Madagascar. 



5. Faurea Harv. 

 Flor. Cap. 639. 



b. Flowers regular or nearly so ; all 4 segments separating. 

 I. Perianth-segments equal. 



1 . Heads terminal, 00 -flowered, solitary, corymbose or glomerated. 



x Leaves pinnatifid with filiform segments or (rarely) filiform. 



Nut shortly pedicillate. (Fig. 76 ; Plate 33.) 



Endemic. Ca. 48 species. 6. Serruria Salisb. 



Flor. Cap. 654. 



* The letters Ca. indicate "Cape region," also designated as the "South Western 

 region." 



