264 BOTANICAL GAZETTE [MARCH 
turn was referred to O. biennis until recently. These numerous elementary 
species emphasize the fact that O. biennis, as formerly understood, was really 
a surprising mixture of forms.—]J. C. 
Bolivian plants.—The Bolivian collections of Tu. Herzoc, made during 
tgto and rg1r, have been determined by various specialists, and the first part 
is now published, containing 339 species distributed as follows: ferns 136, 
Lycopodiales 1 (Isoetes), gymnosperms 2 (Ephedra), dicotyledons 190, and 
monocotyledons 10. The new species number 42, of which 14 are ferns, dis- 
‘tributed among 1o genera, and 28 are dicotyledons, distributed among 17 
genera.—]:. M. C 
eT de and Antholithus.—ANTEVvs*s has made a critical investiga- 
tion of L is Ottonis and Antholithus Zeilleri and has concluded that they 
belong to the: same plant. The latter is presumed to be the staminate struc- 
ture of a seed plant; but no seeds are available to indicate whether this meso- 
zoic plant represents a continuation of the Cycadofilicales, as the foliage 
would suggest, or is a member of some more modern group of seed plants.— 
Joe; & 
New genus of Plasmodiophoraceae.—FERDINANDSEN and WINGE* have 
described a new genus (Ostenfeldiella) of the Plasmodiophoraceae, dedicating 
it to its discoverer, Dr. C. H. OstENFELD, who found it attacking a species of 
Diplanthera, growing in shallow water or muddy soil on the coast of the island 
of St. Croix. The parasite causes swellings in certain branches, so that the 
branch as a whole bears “a certain resemblance to a string of pearls.””—J. M. C 
The vegetation of Guiana and Trinidad.—CAmpPBELL” has given an 
interesting account of a visit to Guiana and ae Both British and Dutch 
Guiana were included in the itinerary. In each of these colonies and also in 
Trinidad study was facilitated by botanical gardens. Excellent stretches of 
natural forest are available from Paramaribo and Port of Spain.—H. C. 
CowLes 
- oc, Tx.), Die von Dr. Tu. Herzoc auf seiner zweiten Reise d urch 
Bolivien in ap Jahren 1910 ein mig gesammelten Pflanzen. Teil I. Mededeel. 
Van Rijks Herb. no. 19. pp. 84. 
25 ANTEVS, ERNST, Leidprs oni pein pana and oe Zeilleri 
Nath. Kgl. Svensk. Vetensk. Handl 8. pls. 3. 19 
% FERDINANDSEN, C., and wae os “Oeil, a new ener of Plas- 
modiophoraceae. Ann. oe 28: i dg pl. 45. figs. 4. 1914. 
* CAMPBELL, D. H., S of the flora of Gunns and Trinidad. Pop- 
Sci. Monthly 82: 19-32. ‘heh ‘ toys, 
