KEPORT ON THE BOTANY OF JUAN FERNANDEZ AND MASAFUERA. 27 



Berberis corymbosa, Hook, et Aro. 



Herberts corymbosa, Hook, et Am. in Hook. Bot. Misc., iii. p. 135 ; Gay, Fl. Chil., i. p. 82 ; Philippi 

 in Bot Zeit., 18.36, p. G27. 



Juan Fernandez.— Endemic— Douglas; Mrs M. Graham; Cuming, 1338; Reed; 

 Moseley. 



Apparently common in the island, as it is in all collections. The genus Berberis is 

 numerous in species, which are spread all round the northern hemisphere, and in America 

 from Canada to Fuegia, chiefly in the great mountain chain ; but none is found south of 

 the equator in the Old World. One species occurs in Africa as far south as Abyssinia. 

 Gay enumerates upwards of twenty species in his Flora Chilena, many of which are very 

 distinct. The insular species exhibit no marked characteristics, and are not very different 

 from some of the continental ones. 



CRUCIFER^E. 

 Oardamine chenopodifolia, Pers. 



Cardamine chenopodifolia, Pers., Synop. PL, ii. p. 195; DC. Prodr., i. p. 149; St Hil., Fl. Bras. 



Merid, ii. p. 121, t. 106. 

 Heterocarpus fernandezianus, Philippi in Bot. Zeit, 1856, p. 641. 



Juan Fernandez. Germain; Reed. 



Also a native of Uruguay, in the neighbourhood of Monte Video, and other parts, and 

 of Entre Rios, growing even in salt water, according to Gibert, who collected it at Punta 

 Brava. 



This is one of those remarkable amphicarpic plants, belonging to various natural 

 orders, which produce two kinds of seed-vessel ; hence Philippi's name. Besides the 

 ordinary linear pod of the genus, containing numerous seeds and borne on the erect 

 stems, Cardamine chenopodifolia usually has a number of others at the base of the stem 

 of totally different shape and consistence, each containing one, or sometimes two seeds, 

 which are larger than those in the normal pods. There are no specimens in the Kew Her- 

 barium bearing flowers at the base of the stem, but it is probable that here, as in other 

 plants exhibiting this singular provision, the short, thick-pointed seed-vessels proceed from 

 cleistogamic flowers. The plant is of annual duration, or, to be more explicit, flowers only 

 once, and, as described, buries some of its own seed, thus ensuring its existence. The 

 Chilian Cardamine cordata, Gay, is near, but different from this species, which does not 

 appear to have been found on the western side of the continent. 



The late Dr A. Grisebach, of Gottingen, had an opportunity of studying the develop- 



