PATAGONIAN FLORA. 101 



Genus PliilippieUa, which is l-merons with a 1-seeded utricle, 

 has stipules and the scent of Valerian. 



CaltJia dioueacfuVia is a Ttanunculaceous plant with the 

 leaves of the famous Virginia fly-catcher, and Hamadryas is 

 a dioecious genus of the same family. The barberries are abun- 

 dant, and many of them remarkable. Drimys, Winter's Bark, 

 is well known as the most characteristic of the West ]\Iagellan 

 shrubs, and belongs to a special section of the Magnoliaceae ; it 

 has allies in other southern wai'in, temperate lands — Australia, 

 Papua, Borneo, and in Kew Zealand — and extends to northern 

 South America and Afexico. Calandrinin, of Portulacaceje, 

 l>inds western Sonth America to Australia; and Laurelia of 

 Monimiaceae, unites with Xew Zealand; but it is impossible to 

 cite all the cases of this kind of discontinuity. Braya, of the 

 Cruciferse, however, is most remarkable ; its several species fol- 

 low each other from the European Alps, through the Asian 

 Mountains, China, and Siberia, over to the Rockies of America, 

 and by the Andes to Patagonia ; and a species occurs in ISTew 

 Zealand ; thus l)elting the world. A single species of Saxifrac/a 

 (S. c or dill er arum Presl.) almost equals this, whilst wild species 

 of Rihes connect with Xorth America, and with the gooseberries 

 and currant of Eurasia. 



The Rosacea are represented by the Potentils, Geums and 

 other European forms, often specifically different, and l)y some 

 remarkable local generic forms. Tctracilocliin and Acaena are 

 most cnrions. the many species of Acaena having achenes with 

 strong glochidiate spines ; one species of this genus reaches Cali- 

 fornia ; others are in the Falklands, South Georgia Islands and 

 Australia, but South Chili and Patagonia are the chief centre of 

 its numerous species. Beside them we may cite the Leguminous 

 AnavilirophyJhnn . which has spinelike leaves, reminding of the 

 Eurze (Ulex) of Europe. But the greatest of the south Pata- 

 gonian Leguminosi"e is that often called Adesniia, now fixed as 

 the genus Patagoiuiim , chiefly herbs of the habit of the Astra- 

 gals, which are less numerous in that region. Its generic name 

 is ap]U-o]u-iate, for half of it'^ ninety species are in Patagonia. 



