228 Key to the System of 



1067. Calyx quite glabrous. 



A tall and ample shrub, chiefly maritime ; leaves small, . 

 firm, crowded, from orbicular- to elliptic-oval, somewhat 

 concave, glabrous, some occasionally scattered ; involucral 

 bracts four, similar to the leaves ; flowers very small, few 

 in each headlet ; calyx always yellow ; fruit almost dry. 



P. serpyllifolia. 



Calyx beset with short hairlets ... ... ... 1068 



1068. Leaves recurved at the margin. 



Dwarf; leaves small, from ovate- to elliptic-lanceolar, nearly 

 glabrous ; involucral bracts two to four, similar to the 

 leaves; flowers minute ; calyx beset with appressed shining 

 hairlets ; fruit dry. P. elachantha. 



Leaves incurved at the margin. 



Finally tall, amply branched ; leaves small, from elliptic- 

 to orbicular-ovate, glabrous, not rarely assuming a partial 

 blueish hue ; involucral bracts four, similar to the leaves, 

 but somewhat larger ; flowers very small ; calyx either 

 whitish or pale- or bright-yellow, beset with appressed 

 shining hairlets ; fruit dry. P. flava. 



DRAFETES. 



1069. Rudimentary petals two to each lobe of the calyx. 



Much depressed, compact, somewhat beset with short hair- 

 lets ; leaves minute, crowded, broadish- or elliptic-linear, 

 appressed ; flowers very small ; calyx whitish ; stamens 

 alternating with the lobes of the calyx ; fruit minute. 



D. Tasmanica. 



ROSACEAE. 



ACAENA. 



1070. Flowers in spikes. 



Perennial, erect, never tall ; leaflets in ten or less pairs, from 

 elliptic- to orbicular-ovate, indented or almost pinnatifid, 

 generally glabrous above, often beset with silky-shining 

 hairlets beneath ; flowers in solitary terminal spikes, only 

 some fruit-bearing; lobes of the calyx generally five; 

 fertile stamens five to ten ; fruit- calyx beset with many 

 short unequal terminally barbed pricklets. 



A. oviiia. 



