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CAUL 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 Thyrsopteris, but seedlings of Robinsonias as well 

 as of Dendroseris 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. 36. Rhetinodendron Berterii: a $ head, b cf head, c d" 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. 6y, 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. 



