Floristik, Geographie, Systematik etc. 505 



folia Nieuwl.), N. cauadensis {Anemone canadensis L.), Leucocoma 

 dnsycarpa yThalictvum dasycarptini Fisch. & Lall.), Enemion büerna- 

 twn [Isopynun hiternatuin T. & Gr.), Consolida Ajacis (Delphinium 

 Ajacis L.), Cliristophoriana rubra {Actaea rubra Willd.), and C. alba 

 'yÄ. alba MilL). Trelease. 



Nieuwland, J. A., Notes on our local plant s. IX. (Amer. 

 Midi. Nat. III. p. 346-351. Nov. 1914.) 



Contains as new: Sassafras albida glauca, Echtrus niexicanus 

 {Aygenione uiexicana L.), Belharnosia canadensis [{Sangiiinaria cana- 

 densis L.), CapnorcJiis canadensis {Corydalis canadensis Goidie), and 

 C. Cucidlaria {Diclytra Cucullaria DC). Trelease. 



Nieuwland, J. A., Notes on our local plant s. X. (Amer. Midi. 

 Nat. IV. p. 37—40, Jan. 1915.) 



Contains the new names: Tojnostinui carolineana {Draba caroli- 

 niana Walt.), Adyseton alyssoides [Clypeola alyssoides L.), Cardamine 

 aquatica {Nasturtium aquaticum Hill), Adyssetum alyssoides {Clypeola 

 alyssoides L.), Turritis spathulata {Arabis lyrata L.), T. canadensis 

 (Ä. canadensis L.). Dracamine [Cardamine L. — not of the Greeks), 

 with D. pennsylvanica (C. pennsylvanica Muhl.), D. pratensis (C. pra- 

 tensis L.), D. purpurea (C. purpurea Britt.), and D. bulbosa (C. biübosa 

 Schreb.). Trelease. 



Nieuwland, J. A., Notes on our local plant s. XL (Amer. Midi. 

 Not. IV. p. 53-71. May 1915.) 



Contains as new: Rorella intermedia {Drosera intermedia Hayne), 

 Trilopus virginiana cnigustifolia {Hamamelis virginiana angustifolia 

 Nieuwl.), T. virginiana orbiculata {H. virgiana orbiculata Nieuwl), 

 Coreosma americaiui {Ribes americana MilL), C. americana meso- 

 chora, C. odorata {R odorata Wendl.), Penthaphyllum rectum {Po- 

 tentilla recta L.), P. argenteitm {Pol. argentea L.), Pancovia palustris 

 {Comarum palustre L.), Riibus liispidus pleniflorus, Batidea vulgaris 

 {Rubus idaeus L.), Eupatorium molle {Agrimonia mollis Britt.), E. 

 hirsutum {A. hirsuta Bickn.), E. rostellatum {A, rostellata Walbr.), 

 and E. parviflorum {A. parviflora Soland. Trelease. 



Ostenfeld, C. H., On the geographical distribution ofthe 

 Sea-grasses. A preliminary communication. (Proc. Roy. 

 Soc. Victoria. XXVII. 2 p. 179—190. 1915.) 



The author has been studying the geographical distribution of 

 marine flowering plants, as it appearcd to him that it might have 

 some general value, both from a phylogenetic and geological point 

 of view. The Sea-grasses belong to two families of the old monoco- 

 t\^ledon cohort Helobieae and are reduced and speciallj' adapted 

 ancient types. With one exception (the monotypic Enhalus) the 

 genera all occur in the Indopacific, and Atlantic regions, — a distri- 

 bution which indicates that the origin of the group goes back to 

 early tertiary times. A Classification is given of the 8 genera for- 

 ming the cohort, according to their distribution at the present time 

 and sugoestions are put forward on the various migrations of the 

 plants which have taken place in relation to climate. 



E. M. Jesson (Kew). 



