54 ECOLOGY, PLANT GEOGRAPHY [Bot. Absts., Vol. IV, 



362. Pretz, Harold W. Discovery of Trisetum spicatum in Pennsylvania. Rhodora21: 

 128-132. 1919. — On July 15, 1917, the writer collected, near Slatington, Pennsylvania, a speci- 

 men of Trisetum spicatum. The plant was found rather evenly distributed and quite abundant 

 about the open outcrops of the rather short, steep part of the shale slopes close to the tracks 

 of the Lehigh Valley Railroad. A brief discussion of the habitat and the associated species 

 is given. — As far as the writer knows this plant has not been previously reported as occurring 

 between New York and North Carolina. The article is concluded with a discussion of the 

 physiographic and geographic relation of this station to those previously reported. — James 

 P. Poole. 



363. Ringenson, C. A. Sedum villosum L. tva ganger funnen i Jamtland. [Sedum vil- 

 losum L. found twice in Jamtland. (Sweden)] Svensk. Bot. Tidskr. [Stockholm] 13 : 106. 1919. 



364. Rydbero, P. A. Phytogeographical notes on the Rocky Mountain region. VIII. 

 Distribution of the montane plants. Bull. Torrey Bot. Club 46 : 295-327. 1919. — The montane 

 zone of the Rocky Mountain region is defined. The number of species included is given as 

 about 1900, 13 per cent of which are transcontinental; 18.5 per cent are common to the Rockies 

 and Canadian zone of the east, 30 per cent common to the Rockies and the Pacific mountains, 

 and over 53 per cent are endemic. A comparison is also made of the species of the northern 

 and of the southern Rockies. — P. A. Mum. 



365. Standley, Paul C. A new locality for Senecio Crawfordii. Rhodora 21: 117-120. 

 1919. — All of the specimens of Senecio Crawfordii cited by Greenman in his monograph of 

 the genus were from southeastern Pennsylvania and western New Jersey. The writer cites a 

 new locality discovered in May 1917 in a bog near Suitland, Maryland, a few miles east of 

 Washington. A somewhat detailed description of the station and similar bogs is given, to- 

 gether with a list of the characteristic species found in them. These are also the characteristic 

 species of the pine-barrens of New Jersey, although no pine-barrens exist in the region cited. 

 The habitat of the species in Maryland is different from that in which it occurs in Pennsyl- 

 vania and New Jersey, where it is not in a pine-barren association. — James P. Poole. 



366. Stromman, P. H. Lepidium Smithii Hook, funnen i Skane. [Lepidium Smithii 

 found in Skane (Sweden).] Svensk. Bot. Tidskr. [Stockholm] 13: 106-107. 1919. 



367. Thompson, H. S. Galium erectum in Somerset [England]. Jour. Botany 57: 286. 

 1919. — A note on the occurrence of this plant. 



368. Turrill, W. B. Contributions to the flora of Macedonia. II. Kew Bull. Misc. Inf. 

 [London] 1919: 105-108. 1919.— This is a list of seed plants collected by J. M. Russell during 

 July and August, 1918, in the Paprat District, Krusa Balkan, Central Greek Macedonia. 

 The collection adds materially to the number of species recorded in flower under the extreme 

 xerophytic conditions of mid-summer, during which time, with the exception of xerophytes, 

 green vegetation is restricted to such protected habitats as the nullahs. Forty of the species 

 were previously recorded [Kew Bull. 1918: 249-341. See also Bot. Absts. 4, Entry 308.] while 

 fourteen are here listed for the first time. — E. M. Wilcox. 



369. Wangerin, Walther. Die pflanzengeographische Bedeutung der Verbreitungs- 

 grenze von Buche und Fichte fur das nordostdeutsche Flachland. [The phytogeographic sig- 

 nificance of the distribution limit of beech and spruce for the lowland of northeast Germany.] 

 Ber. Deutsch. Bot. Ges. 36: 559-571. 1918 [Feb., 1919]. — The beech has by some been consid- 

 ered to constitute a border line form separating the European from the Russian-Siberian flora. 

 Other investigators consider the beech forest to form a transition zone between middle and 

 eastern Europe. The spruce is more difficult to interpret, and opinions regarding its impor- 

 tance are at variance. The beech associates may be typical companion plants and cease at 

 the limits of the beech forests; or they may be only apparent beech associates, and extend be- 

 yond the domain of the beech. — Ernst Artschwager. 



