REPORT ON THE BOTANY OF JUAN FERNANDEZ AND MASAFUERA. 41 



were two confounded. His remarks thereon are here translated : "The 'Eesina,' which is 

 highly esteemed in Chili on account of its reputed medicinal properties, is a gum-resin 

 yielded by a small tree which I take to be a Senecio ; it exudes from the trunk and branches, 

 and by exposure to the air becomes solid and brittle ; in burning it gives off an odour like 

 that of incense. They distinguish the 'Eesina macho' from the ' Eesina hembra.' The 

 latter yields less, and it never hardens so much as that of the former. The produce 

 of the Macho is called ' Eesina,' while that of the Hembra is called ' Incensa.' Perhaps 

 two species are here confused, for the leaves of the latter are narrower, and the cymose 

 flower-heads are yellow in the disk and deep red in the rays, whereas those of the former 

 are corymbose and wholly yellow. Another small tree of the same genus, called ' Eesi- 

 nilla,' is a new species, which furnishes no resin." 



Robinsonia gayana is the " Eesina hembra," or female resin, and is apparently still 

 moderately plentiful in the island. 



Robinsonia gracilis, Dene. (Plate LV.) 



Robinsonia gracilis, Dene, in Ann. Sc. Nat., sir. 2, i. p. 29 ; DC, Prodr., vi p. 448; Gay, FL Chil., 



iv. p. 127. 

 Robinsonia mierantha, Philippi MSS. in Herb. Kew. 

 Senecio stenophyttus, Bertero MSS. in Herb. Kew. 



Juan Fernandez. — Endemic. Woods in the higher parts of the mountains — Bertero; 

 Reed; Downton. 



This is the "Eesinilla" mentioned under the last species, of which we had only seen 

 Bertero's specimen, represented in our plate, aud two small branchlets collected by 

 Mr Eeed in 1872, until the arrival of Downton's collection at Kew, since our drawing 

 was made. 



Robinsonia longifolia, Philippi. 



Robinsonia longifolia, Philippi in Bot. Zeit., 1856, p. G44. 



Juan Fernandez. — Endemic. Germain. 



No authentically named specimens of this species have come under our observation, 

 but from the description it is very near to, if not the same as, Robinsonia ihurifera, Dene. 



Robinsonia macrocephala, Dene. 



Robinsonia macrocephala, Dene, in Ann. Se. Nat., sir. 2, i. p. 28, t. 1 ; DC, Prodr., vi. p. 448 ; 

 Gay, Fl. Chil., iv. p. 125. 



Juan Fernandez. — Endemic. On the mountains — Gay. 



Decaisne states that this species was founded on a single specimen in the Paris 

 Herbarium, presented by Claude Gay, the author of the Flora Chilena. There is nothing 

 answering to the figure and description in the English collections. 



(bot. chall. exp. — part in. — 1884.) 0.6 



