362 Mr Hill, On Antarctic Umbelliferae. 



Some High Andine and Antarctic Umbelliferae. By A. W. 

 Hill, M.A., King's College. 



[Bead 1 February 1904.] 



The communication dealt with the genera Grantzia Nutt. and 

 Azorella Lmk., which are widely distributed in the Southern 

 hemisphere. 



The genus Grantzia which occurs in Chatham Island, New 

 Zealand and Australia, and is found again in the Falkland Islands 

 and all through S. America to Mexico and in North America, has 

 always been considered as a monotypic genus, with a singularly 

 wide range. It is a small swamp- or water-plant without any 

 well-marked vegetative features, but an examination of the fruits 

 of specimens from various localities shews that apparently several 

 species corresponding to definite geographical areas are included 

 under one very similar vegetative form, and that the fruit characters 

 afford a sound basis for their classification. 



The genus Azorella, which includes the well-known A. selago 

 Hook, of Kerguelen's land, etc. and is allied to the Balsam Bog, 

 Bolax Glebaria Comm., of the Falkland Islands and S. Chile, is 

 of interest from its peculiar habit of growth. The plants usually 

 form large turf-like masses or mounds some two or three feet high 

 and they are distributed all along the Andes, occurring in Bolivia 

 and Peru, where six species were collected by the author, between 

 about 12,000 and 15,000 feet above the sea. 



A peculiar form collected in Bolivia, which approaches Laretia 

 acaulis in the structure of its fruit and which forms great mounds 

 in the high Andes, was described, and a collection of seedlings 

 was exhibited shewing the way in which the mound-like masses 

 are developed. 



