136 BOTANICAL GAZETTE | AUGUST 
Nash® has described recently several new species of Panicum. Mr. Marshall 
A. Howe” has described a new Californian liverwort, to which he has given 
the generic name Gyvothyra. In its sterile condition it is said to resemble 
r. Jo . Small** has published a revision of the species of Tradescantia in 
the he states, recognizing eleven species, four of which are proposed 
as new. Miss Anna Murray Vail*? has begun a series of papers upon Ascle- 
piadacez, in the first number discussing the genus Philibertella, called Phili- 
bertia by Dr. Gray. Mr. F. V. Coville, in discussing the name of the camas 
plant, has given the citations and synonymy of the genus Quamassia, and a 
synopsis of the species, five of which are recognized. It seems that our east- 
ern Camassia Frasert becomes Q. esculenta, while the real camas of the west 
is QO. guamash, Two more new plants from Mount Mazama, Oregon, have 
been described by Messrs. Coville and Leiberg,3" being species of Arenaria 
and Cardamine. Mr. M. L. Fernald has published a second supplement to 
the Portland catalogue of Maine plants. The recent pages of Pz¢fonza which 
have reached us extend from 159-182. They contain the usual descriptions 
of new species and discussions of old forms. Chief attention, however, is 
given to the Compositae, the genus Erigeron being made larger by eight 
species, the genus Antennaria increased by six species, and the genus Mesa- 
denia of Rafinesque taken up for our species of Cacalia, which genus is thus 
restricted to African and East Indian forms. Mr. W. N. Suksdorf,3 in pre- 
senting the genus Plectritis and its allies, describes several new species, and 
proposes the new genus Adigera, founded upon Plectritis macrocera T. & G,. 
In addition to this species the Valerianella ciliosa of Greene is included, and 
seven new species are described. Mr. J. M. Greenman*# has prepared a revis- 
ion of Mexican and Central American species of Houstonia, recognizing 
twenty-three species, several of which arenew. He has also prepared a key 
to the Mexican species of Liabum. Among the numerous new species from 
Mexico he has proposed two new genera, Streptotrachelus [ Apocynacee | and 
Buceragenia |Acanthacee]. Mr. F. Lamson-Scribner,®) in his “ Studies of 
American grasses,” intends to present certain new and little known species 
which have been brought to his attention in connection with his preparation 
26 Op. cit. 24 : 192-201. 1897. 
77 Op. cit. 24: 201-205. 1897. 
Op. cit, ee 228- icin 1897. 
79Op. cit. 24: 305-310. 1897. 
3° Proc. os. Soc. Siece 11: 61-65. 1897. 
3*Op. cit. rn: 169-171. 1897. 
¥ Proc. Portland Soc. Nat. Hist. 2: beh ok 1897. 
33 Deutsche sit Monatsschrift —: 1-4, ig? 148. 1897. 
3% Proc. Amer. Acad, 32: 283- 
35 Bulletin 8, on S. Depart. Files ot 20. ie &. 1897. 
