234 BOTANICAL GAZETTE [ MARCH 
1903) has described a new genus (Acmofyle) of Taxaceae.—C. S. SARGENT 
(Proc. Rochester Acad. Sci. 4: 93-106. 1903), in a presentation of the 
genus Crataegus as displayed in and about Rochester, N. Y., has described 
27 new species.— W.R. Maxon (Contrib. U. S. Nat. Herb. 8: 271-276. 
pls. 61-62. 1903), in studying certain Mexican and Guatemalan species of 
- Polypodium, has described 5 new species. A. W. Evans (Ottawa Nat. 17: 
13-24. Pls, 7-2. 1903), in a paper on Yukon Hepaticae, embracing 38 
numbers, has raised to generic rank Mesoptychia, one of Lindberg’s sections 
of Jungermannia, and more recently a subgenus of Lophosia.—E. L. GREENE 
(Leaflets 1: 1-32. 1903) has published, as segregates from Aster, Oclemena 
(A. acuminatus and A. nemoralis), Lasallea (A. sericeus as type), and Una- 
mia (A. ptarmicoides); has recognized Kyrstenia Necker (Eupatorium § 
Ageratina) as entitled to generic rank, transferring the numerous species 
involved and describing 9 new ones; has described as a new genus Uncasia 
(to include Eupatorium perfoliatum and its numerous allies); in discussing 
certain genera of Polygonaceae, has recognized the generic rank of RAistorta, 
transferring the species and describing 6 new ones, and of Duravia and Per- 
sicaria, describing 11 new species under the latter. —J. R. JoHNSTON (Proc. 
Amer. Acad. 39: 279-292. 1903). has published a revision of the genus Fla- 
veria, recognizing 15 species, 4 of which are described as new.— N. 
BriTTON and J. N. Rose (Bull. N. Y. Bot. Gard. 3: (no. 9), 1-45. 1903) 
in publishing “new or noteworthy North American Crassulaceae,” have 
described as new genera Oliverella, Clementsia, Villadia, Urbinia, Gormania, 
Dudleya, Altamiranoa, Stylophyllum, Hasseanthus, and Sedella, besides 101 
new species. — R. S. WILLIAMS (ddem 104-134), in reporting on a collection 
of Bolivian mosses, has described 3 new genera oe Teretidens, 
B. 
Aligrimmia) and 29 new species. — W, HEMSLEY (Jour. Linn. Soc, Lon- 
don 35: 517. 1903) has sablighed a new genus of sek ats (Rhabdo- 
thamnopsis) from China.—C. S, SARGENT (Trees and Shrubs, part III) has 
published new species Crataegus (6), Euonymus, Viburnum, Pinus (W. Indies), 
A. HELLER (Muhlenbergia 1: 31-46. 1904) has described new species of 
Scutellaria (2), Agastache, Stachys, Monardella (5), Veratrum, Holodiscus, 
Boisduvalia, Gilia, Pentstemon, and Orthocarpus.— P. HENNINGS (Hedwigia 
42: 307. 1903) has described a new genus (Aiatorediina) of Patellariaceae, 
and one ba toma of Xylariaceae.— Three new species of Opuntia left 
in manuscript by t ate Dr. WEBER have just been published (Gard. 
Chronicle III. 35: oy 1904).— W. SuKsporF (West Am. Scientist 14: 3!-33- 
1903) has published three new species of Nemophila. —J. M. C 
A. A. LAWSON” has obtained some most interesting results from a study of 
Sequoia sempervirens, whose essential morphology has long beena desideratum. 
27 Lawson, A. A., The gametophyte, archegonia, fertilization, and embryo of 
Sequoia sempervirens. Ann. Botany 18:1-28. pls. 1-4. - 
