New Releases by E. Hale

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A guide for identifying lichens.

The genus Boerhavia is discussed, its infrageneric classification is reviewed, and four sub-genera are recognized. Distinctions of two Linnaean species, B. diffusa and B. repens are clarified. Boerhavia mutabilis R. Brown and B. pubescens R. Brown are typified. The Boerhavia repens group is discussed and delimited, as is B. rubicunda and several similar species. Boerhavia repens var. maris-indici, B. albiflora, B. crispifolia, and B. herbstii are described as new. A curious abnormal form of B. crispifolia is also described and discussed.

A world-level revision is given for the 29 species of Bulbothrix, a generic segregate of Parmelia characterized by marginal bulbate cilia and production of atranorin in the upper cortex. The genus is primarily tropical in distribution and best developed in secondary forests. The main center of speciation is Brazil with 14 species, and the genus is also well represented in Africa. The New World species have a high frequency of depsides and orcinol depsidones, whereas the Old World species usually contain & beta;-orcinol depsidones. One new species, B. klementii Hale, and one new combination, B. goebelii (Zenker) Hale, are proposed.

The 47 species of Parmelina are revised on the world level. Two sections are recognized: section Parmelina with 30 species widely distributed in temperate to tropical montane regions and section Myelochroa with 17 terpene-containing species concentrated in eastern and southern Asia. The genus is most closely related to Parmotrema Massalongo. Five new species, P. crassata Hale, P. degelii Hale, P. indica Hale, P. rhytidodes Hale, and P. schindleri Hale, are described, and six new combinations proposed, P. amagiensis (Asahina) Hale, P. damaziana (Zahlbruckner) Hale, P. endoleuca (Taylor) Hale, P. irrugans (Nylander) Hale, P. jamesii (Hale) Hale, and P. pastillifera (Harmand) Hale. New combinations are also made for Hypotrachyna baguioensis (Hale) Hale and Parmotrema nylanderi (Lynge) Hale.

A revision is made of the lichen family Thelotremataceae in Dominica, based on previously published records by Elliott and on collections by the author. The family comprises 48 species in 4 genera, Leptotrema, Ocellularia, Phaeotrema, and Thelotrema. The following 15 species are described as new: Ocellularia antillensis, O. conglomerata, O. dominicana, O. maculata, O. mordenii, O. nigropuncta, O. rimosa, O. sorediata, Phaeotrema aggregatum, P. obscurum, Thelotrema confusum, T. dominicanum, T. papillosum, T. tenue, and Leptotrema deceptum. Three new combinations, Ocellularia fecunda (Vainio) Hale, Phaeotrema disciforme (Leighton) Hale, and Leptotrema occultum (Eschweiler) Hale, are also made. Morphological characters are reviewed and the chemistry of each species is presented in detail. The family is exceptionally well developed in mature rain forest.

A revision is made of the lichen family Parmeliaceae in Dominica, based on previous published records by Elliott and on collections by the author. Twenty-two species are now known for Parmelia, the only genus in this family on the island. A new species, Parmelia mordenii, is described from rock habitats in the dry scrub woodland.

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