No. 1, July, 1920] ECOLOGY, PLANT GEOGRAPHY 53 



350. MacCauoiiky, Vathwan. The endemic palms of Hawaii : Pritchardla. Plant World 

 21: 317-328. Dec, 1918. — A general discussion i.s given of the genus Pritchardio, which in- 

 cludes all the endemic palms of the Hawaiian [elands. The author indicates the geograph- 

 ical distribution of sixteen species, and the outstanding features of the roots, trunks, leavee, 

 and inflorescences, common to all the species are described. — Charles A. Skull. 



351. MacCauohey, VatjghaN. The pala or mule's-foot fern (Marattla Douglasii (Presl.) 

 Baker) in the Hawaiian Archipelago. Torreya 19: 1-8. Jan., 1919. — This species, which is 

 common to the Fiji Islands, is the sole representative of the Marattiales in the Hawaiian 

 flora. Its presence there may be explained by introduction from the Fiji Islands, either 

 naturally or through human agency, or it may be a relict of a more widespread display of 

 Marattiales on a former greatly enlarged Hawaii, "Pan-Hawaii-land." [See Bot. Absts. 2, 

 Entry 979.]— //. C. Cowles. 



352. MacCauqhey, Vaughan. The genus Morinda in the Hawaiian flora. Plant World 

 21: 209-214. Aug., 1918. — A brief description of the Rubiaceous genus Morinda, followed by 

 a more detailed description of the two Hawaiian species: M. citrifulia and M. Irimera. The 

 first of these is a familiar dye-tree of India, Malaya and the Pacific islands, a fact that may 

 account for its migration into the Hawaiian islands. The second species is endemic and 

 may have arisen as a mutant from M. citrifolia. — P. D. Strausbaugh. 



353. Moxley, G. L. A botanical trip to Catalina Island. Amer. Bot. 25: 93-94. 1919. 



354. Nelson, J. C. The rarity of Conopholis. Amer. Bot. 25: 151. 1919. — Conopholis 

 americana reported as not rare in Kentucky. — W. N. Clute. 



355. Nelson, J. C. Species east and west. Amer. Bot. 25: 70-71. 1919. — A comparison 

 of the flora of Boone County, Kentucky, with that of Chelan County, Oregon, shows that while 

 the total number of species is about the same, there are only 47 species of plants that appear 

 in both lists; when the introduced species are eliminated, only 17 species are found in both 

 lists, and these are recognized as cosmopolitan. — W. N. Clute. 



356. Nelson, J. C. Oregon Chenopodiums. Amer. Bot. 25: 112. 1919. 



357. Nelson, James C. The grasses of Salem, Oregon, and vicinity. Torreya 19 : 216-227. 

 1919. — A list is given of grasses growing spontaneously in that part of the Willamette Valley 

 adjacent to the city of Salem, prefaced by brief notes on topography and climate. 108 species 

 are enumerated, of which 57 are introduced and 51 native. The preponderance of introduced 

 individuals is noted. A steady increase of introduced species is predicted. The grass species 

 are classified ecologically in six societies, riparian, hydrophyte, xerophyte, silvicole, submon- 

 tane and ruderal. — J. C. Nelson. 



358. Nordberg, Arne. Ny fyndort for Cypripedium. [A new locality for Cypripedium.] 

 Bot. Notiser. 1919: 167. 1919. — Cypripedium Calceolus L. is recorded from subarctic Sweden, 

 at Sunderbyskogen, Nedre-Lulea Parish, and a list is given of 17 other plants associated with 

 it. — P. A. Rydberg. 



359. Nordstedt, O. Sandhems Flora 6. Tillagg. [Flora of Sandhem, 6. Additions.] 

 (Swedish.) Bot. Notiser 1918: 309. 1918. — Many additional plant localities recorded. — P. A. 

 Rydberg. 



360. Petch, T. Oxalis in Ceylon. Ann. Roy. Bot. Gard. Peradeniya 7: 47-51. 1919 — 

 Notes on the introduction and spread, as weeds, of Oxalis corymbosa DC. and O. latifolia 

 HBK— E. D. Merrill. 



361. Phelps, Orra Parker. Ranunculus Boraeanus in eastern New York. Rhodora21: 

 208. Nov., 1919. — Plants of this species, which has not before been noted in America, found 

 in New York and identified at Gray Herbarium. The species is native to continental Europe. 

 — James P. Poole. 



