Volume 92

Number 3

(PDF) B. L. Turner. Mexican species of the genus Bartlettina (Asteraceae:
Eupatorieae), and erection of three new species p. 279

(PDF) W. H. Blackwell. The enigmatic genus Pythiella (Oomycota) p. 304

(PDF) T. E. Melchert. Chromosome counts of Bidens, Cosmos and
Thelesperma species (Asteraceae, Coreopsidinae) p. 312

(PDF) D. B. Ward. The type of Amsonia tabernaemontana Walter
(Apocynaceae): A discourse on the limits of "indirect reference" p. 334

(PDF) B. L . Turner. Bahia depauperata (Asteraceae: Bahieae) transferred to
Achyropappus p. 345

(PDF) R. P. Adams and L. N. Sharma. DNA from herbarium specimens:
I. Correlation of DNA size with specimen age p. 346

(PDF) B. L. Turner. A new species of Eupatoriastrum (Asteraceae:
Eupatorieae) from San Andres Tuxtla, Vera Cruz, Mexico p. 354

(PDF) B. L. Turner. Smallanthus putlanus (Asteraceae: Heliantheae), a new
species from Oaxaca, Mexico p. 358

(PDF) B. L. Turner. Ageratina villarrealii (Asteraceae: Eupatorieae), A new
species from Sierra de Zapaliname, Coahuila, Mexico p. 362

(PDF) R. P. Adams, J. A. Bartel, D. Thornburg and A. Allgood. Geographic
variation in the leaf essential oils of Hesperocyparis arizonica
and H. glabra p. 366

(PDF) B. L. Turner. Four new species of Ageratina (Asteraceae): Eupatorieae)
from Oaxaca, Mexico p. 388

(PDF) M. Terry and S. Scoppa. Quercus hinckleyi x Q. vaseyana, a putative
hybrid from Presidio County, Texas p. 400

(PDF) B. L. Turner. Taxonomy of Stevia seemannii, S. alatipes (Asteraceae)
and description of a new species, S. enigmatica, from amongst their midst p. 407

(PDF) R. P. Adams, F. Jimenez Rodriquez, J. Hoppe and T. A. Zanoni.
Discovery of a new population of Juniperus gracilior var. urbaniana
from the Dominican Republic: Analyses of leaf terpenoids and SNPs
from nrDNA and trnC-trnD p. 413

(PDF) R. P. Adams and D. Thornburg. A review of seed dispersal in
Juniperus p.424

(PDF) J. E. Averett. A new species of Chamaesaracha (Solanaceae) from
Mexico and the separation of C. crenata from C. villosa p. 435

(PDF) D. B. Ward. Keys to the flora of Florida --
26, Cenchrus (Gramineae) p. 442

(PDF) Erratum - - Fossombronia p. 451

Index to article topics and scientific names in volume 92 p. 452