48 • THE VOYAGE OF H.M.S. CHALLENGER. 



Selkirkia berteroi Herasl. (Plate LVII.) 



Selkirkia berteroi, Hemsl. 



Cynoglosmm berterii, Colla in Mem. Accad. Sc. Torino, xxxviii. p. 132, t. 43, mala; DC, Prodr. x. 

 p. 153. 



Frutex ramosus, 3-G pedalibus, foliis lanceolatis confertis vix hispidulis, floribus 

 albidis late cymoso-corynibosis. 



Juan Fernandez. — Endemic. Declivities in the mountain woods of the higher 

 regions — Bertero ; Reed; Downton; Moseley. 



At the date when Colla named this plant, the genus Cynoglosmm was a most compre- 

 hensive one ; yet he remarks that in habit it deviates widely from all its congeners ; but 

 ripe fruit was unknown to him. Independently of the shrubby habit, the flowers and 

 fruit afford distinctive characters of generic value, as we think. It is named after Alexander 

 Selkirk, who certainly deserves this kind of distinction as much as Defoe's imaginary hero, 

 to whom De Candolle dedicated the Juan Fernandez genus Robinsonia. 



In the present plant the normal scabridity of the Boraginese is reduced to a minimum, 

 and the inflorescence is altogether different from that of Cynoglossum. There are no scales 

 in the throat of the corolla, but these are replaced by semicircular inflexions of the sub- 

 stance of the tube itself, which are concave without and convex within. The young 

 ovules are suberect in the coarsely tuberculed lobes of the ovary, but from the whole 

 downward extension of the cell cavity the seeds become pendulous in fact, if not in theory. 

 The nutlets, of which sometimes only three grow out to maturity, are attached all along 

 the inner surface to a pyramidal axis, and they are broadly winged and irregularly toothed, 

 the wing being much extended below, thus concealing the small calyx, while the back is 

 furnished with usually three or four coarse tubercules. 



CONVOLVULACE^E. 



Calystegia tuguriorurn, E. Br. 



Calystegia tuguriorurn, E. Br., Prodr. El. Nov.'^Holl., p. 483 in obvers. ; Hook, f., Fl. K. Zeal., i. 



' p. 183, t. 47. 

 Convolvulvus tuguriorurn, Forst, Fl. Ins. Austr. Prodr., p. 14; Hook, f., Handb. Fl. N. Zeal., p. 198. 



Masafuera. Downton. 



New Zealand ; Chatham Islands ; Chiloe and Valdivia. 



Until we found the record (in the Handbook of the New Zealand Flora) of this plant 

 from South America, we were under the impression that it was restricted to New Zealand. 

 The Masafuera plant is exactly like New Zealand specimens ; and although there are no 

 South American specimens in Kew Herbarium bearing this name, there can be little doubt 

 that the author of the New Zealand Flora referred to a specimen collected in Chiloe by 

 Captain King, and another in Valdivia : the latter may be different. 



