387 
Herbarium Indexes for all the groups of Cryptogams. A. B. 
Seymour (Cambridge, Mass. Sept. 1892—27 sheets, blue 
prints. 8X10, price $1.00). 
These include only such genera as occur within the United 
States, and are after the plan of those in use for Phanerogams in 
the Gray Herbarium. The genera are arranged alphabetically, 
prefixed by numbers to indicate their systematic order, and will 
be of great service to all those who limit their collections to this 
.country.—E. G. B. 
Hibiscus Moscheutos (Meehan Month. if. 161. Illustrated). 
Kakteen aus dan Staate Vera Cruz. A. Mathsson (Monats. Kak- 
teenk. i. 79). 
Lady's Slippers—Hardy (The Garden, xlii. 386). Withacolored 
plate of Cypripedium acaule and C. pubescens. 
Mamitlaria obscura. H. Heldmann (Monats. Kakteenk. i. 52). 
Mamillaria Schumannii, Heldm. (Monats. Kakteenk. i. 89, with 
: illustration). 
_ Mangrove Tannin. Henry Trimble (Contr. Bot. Lab. Univ. Penn. 
i. 50). 
With an illustration of a grove of Rhizophora Mangle. 
Melilotus alba, L.—Preliminary Observations on the Movements 
of the Leaves of. W. P. Wilson and Jesse M. Greenman. 
(Contr. Bot. Lab. Univ. Penn. i. 66 with 5 plates.) 
Montreal Island—The Flora of. Robert Campbell. 
Sci. v. 208). 
Moorea irrorata. J. D. Hooker (Curt. Bot. Mag. xlviii. t. 7262). 
An orchid from the Andes of South America. 
Mountain Flora of Alabama—The. Charles Mohr. (Gard. and 
For. v. 507). 
Oaks of North America (Hardwood ii. No. 8). 
Oak. pruners—The. John B. Smith. (Gard. and For. v. 557. 
Illustrated). 
Pilocereus senilis cristatus. A. Mathsson. (Monats. Kakteenk. 
i. 32. Illustrated.) 
Pinus edulis. (Gard. Chron. xii. 563. Illustrated). 
 Phyllocactus Phyllanthus, Lk. (Monats. Kakteenk. xi. 72. Il- 
lustrated). Notes on this Brazilian species. 
(Can. Rec. 
