tate, with about twenty prominent costae, which are obtuse and 

 somewhat mammillose at the margins ; in the centre of each mam- 

 milla is an oblong, white, woolly, close-placed areola, with nume- 

 rous rather short spines or aculei, whose arrangement is very 

 peculiar. They are of two kinds ; the greater number, twenty 

 and more, are about three lines long and spread out almost hori- 

 zontally in two rows, closely placed in a pectinated maimer, 

 whitish or yellowish-white, tipped with red or brown, almost 

 united at their base, the middle ones the longest ; between these 

 two rows are a few smaller ones. Flowers solitary, two or more 

 from the same crown, and springing from near the top, large for 

 the size of the plant, very beautiful. Ovary oblong-cylindrical, 

 a little expanded upwards, studded with white woolly areola? 

 which produce several rather soft hair-like, white spines, tipped 

 with rose, and which appear also (but still longer and softer) on 

 the outer segments of the perianth. Sepals ovate, cuspidate, yel- 

 lowish-green tinged with purple, and having a broad dark dorsal 

 purple line • these sepals gradually pass into the longer and more 

 delicate rose-coloured petals, greenish at their base and serrated 

 at their margins above. Stamem numerous. Stigma of about 

 thirteen greenish rays. 



nilfrtd 2 CIusters of acuIci - 2 - A P ex of st y le witk the ™y s of the ***&*>* :_ 



