ig8 



CARL SKOTTSBERG 



authors have repeated this statement, adding their own reflections. I shall 

 return to this question when dealing with my ecological observations: at present 

 it suffices to tell that, in spite of the very special attention paid to this plant, 

 of which I have seen much more than earlier visitors, I have been unable to 

 discover a single case where an adult specimen was epiphytic. Once, two 

 seedlings were observed on Thyrsoptei-is, but seedlings of Robinsonias as well 

 as of Deudroseris micrantha are often found growing on the trunks of ar- 

 boreous ferns. 



The structure of the head in Rhetinodendron is interesting and will be 

 described with full details later; this time I only refer to my figures. The pap- 



Fig. 56. Rhetinodendron Berterii: a 9 head, b (f head, c a" flower, d achene — All X 8. 



pus is peculiar, for it forms four different portions, two larger lateral and two 

 smaller, dorsal and ventral; the achene is flattened in tangential direction. 

 Area of distribution: Endemic in Masatierra; monotypic. 



Centaurodendron Johow. 



132. C. dracaenoides Joh., Estud. 63; SKOTTSBERG, Stud. 5, Taf. 5, 

 Fig. 2-3. 



Masatierra: only on the high ridges encircling Cumberland Bay, very 

 rare. Forest on the very steep slope of Co Damajuana, one specimen seen; 

 Portezuelo de Villagra, three specimens near the path just below the pass, 

 c. 550 m, three more seen on the slope of Co Piramide close to the pass, 580 m 

 (no. 1234); northwest face of the same mountain, on rock ledges, several trees. 



