ASTHANA, A.K. & S.C. SRIVASTAVA. 1991. Indian hornworts (A taxonomic study). Bryophyt. Bibl. 42: xi, 58 pp, illus. Schweizerbart’sche Verlagsbuchhandlung, Johannesstrasse 3-A, D-7000 Stuttgart 1, Germany. ISBN 3-443-62014-0, US$ 73.22. — Anthocerotaceae; 5 genera, 34 species, 1 new; keys, descriptions, notes. BARTHOLOMEW-BEGAN, S.E. 1991. A morphogenetic re-evaluation of Haplomitrium Nees (Hepatophyta). Bryophyt. Bibl. 41: 483 pp, illus. For address, see Asthana. ISBN 3- 443-62013-2. DM 220.00. — 7 species; morphology, ontogeny, speciation, phyletics.