Effects of a Bush Fire on the Vegetation of Signal Hill. 
225 
of year the sun's rays fall much more uniformly on the two slopes than 
during the winter months. 
The whole area showed, a deficiency in annuals, and certain of these had 
clearly been introduced by cattle since the fire. Amongst these were noted 
Trifolium agrarium, Trifolium procumbens, Trifolium glomeratum, and 
Medicago denticulata, which were found associated with animal manure. 
The foregoing concludes the observations made during the year 
immediately following the fire. In 1920 the first visit took place on the 
4th April. The earlier months of this year had been very dry, and the 
hillside presented a very barren appearance. On this occasion the charac- 
teristic feature was the bright green of the bushes of Rhus lucida, this shrub 
having grown very actively during the winter months of the previous year. 
The average height of the bushes was about three feet. The ground in 
between the bushes was occupied by a large number of smaller plants of a 
grey-green colour. A careful examination was made, and a large number of 
them were found to be seedlings. The following list of seedlings was made : — 
Elytropappus Rhinocerotis (a), 
f Athanasia trifurcata (1, a). 
Psoralea hirta (1, a). 
Borbonia cordata (1, a). 
Arthrosolen laxus (f). 
f Anthospermum ciliare (f). 
Psoralea uncinata (1, f). 
f Peucedanum galbanum (1, f). 
Erica viridi-purpurea (1, f). 
Mesembryanthemum scabrum (o). 
Cliff ortia ruscifolia (o). 
f Cliff ortia polygonifolia (o). 
Conyza ambigua (o). Chiefly growing in bushes 
of Rhus lucida. 
f Aster fruticosa (o). 
Aspalathus spinosa (o). 
Aspalathus sp. (possibly A. thymifolia), (o). 
Senecio rigida (o). Mostly confined to the damper 
parts of the area. 
Senecio pubigerus (o). Chiefly growing in bushes 
of Rhus lucida. 
Senecio Burchellii (o). „ „ 
Euryops abrotanifolius (o). 
Passerina sp. (o). 
Osteospermum moniliferum (o). 
