Names, types, and distribution of neotropical species of Erythroxylum (Erythroxylaceae). Brittonia 56: 1–53. 2004.—A list is provided of all 358 taxa of Erythroxylum described from the Neotropics through the year 2000, including type specimen citations, probable synonymy, geographic distribution, and designation of 41 new lectotypes and one new neotype. The list includes 187 accepted species, eight accepted varieties, 27 infraspecific names of uncertain status, and 136 synonyms. A searchable specimen database and type image archive may be accessed at < www.fieldmuseum.org/research_collections/database.htm>.

Brittonia 56: 54–57. 2004.—A new species, Ficus salicaria, is described from material cultivated as ornamental. The material is of uncertain provenance but was probably collected originally in Guyana.

Phylogenetic relationships of Scaphyglottis and related genera (Laeliinae: Orchidaceae) based on nrDNA ITS sequence data. Brittonia 56: 58–66. 2004.—Sequences of the nuclear ribosomal internal transcribed spacer regions 1 & 2 (nrDNA ITS) including the intervening 5.8S region were analyzed cladistically for 43 individuals of 35 species of Scaphyglottis s.l. plus two outgroup taxa. Low levels of sequence divergence do not allow estimation of relationships among most clades, but the analyses indicate that four segregate genera (Hexisea Lindl., Reichenbachanthus Barb. Rodr., Hexadesmia Brogn., and Platyglottis coriacea L.O. Williams) are embedded within a broad paraphyletic Scaphyglottis. This broadly defined Scaphyglottis sensu Dressler is characterized within Laeliinae by the usual presence of superposed growth habit and the presence of a column foot. In order to accommodate species formerly placed in Platyglottis and Reichenbachanthus, three new combinations are made in Scaphyglottis: Scaphyglottis brasiliensis (Schltr.) Dressler, S. coriacea (L. O. Williams) Dressler, and S. emarginata (Garay) Dressler.

A new species of Dalea Sect. Parosela (Fabaceae: Amorpheae) from Mexico. Brittonia 56: 67–71. 2004.—Dalea rupertii is proposed as new. It differs from previously known species in having calyx teeth with both spurred (1–2) and blister glands (4–6), and leaves 7–17 mm long, bearing 4–5 pairs of leaflets. It is known only from the southern portion of the state of Durango, Mexico. A description, a comparative table, and an illustration are provided.

A new species of Dalea sect. Parosela (Fabaceae: Amorpheae) from Mexico. Brittonia 56: 67–71. 2004.—Dalea rupertii es propuesta como nueva especie. Difiere de las especies previamente conocidas por la presencia de glándulas tanto espueliformes (1–2), como ampulosas (4–6) en los dientes del cáliz, hojas cortas de 7–17 mm largo y 4–5 pares de folíolos. Sólo se conoce de la región sur del estado mexicano de Durango. Se presentan una descripción, tabla comparativa e ilustración.

A new Monstera (Araceae: Monsteroideae) from Brazil. Brittonia 56: 72–74. 2004.—A new species of Monstera (Araceae), M. praetermissa, is described, illustrated, and compared to its most similar relatives, M. xanthospatha and M. obliqua. The new species is so far only known from Brazil, but has a broad distribution there, ranging from the south to the northeast of the country.

Novelties in Begonia (Begoniaceae) from the coastal forests of Brazil. Brittonia 56:75–81. 2004.—Two new narrow endemic species of Begonia from the Atlantic coastal forests of Brazil, B. espiritosantensis and B. ibitiocensis, are described and illustrated. Begonia schenkii var. calvescens, an endemic taxon from the states of Santa Catarina and Rio Grande do Sul, is transferred to species rank, and described and illustrated. A distribution map is provided for all three taxa.

Novelties in Begonia (Begoniaceae) from the coastal forests of Brazil. Brittonia 56: 75–81. 2004.—Duas novas espécies de Begonia com distribuição endêmica na Mata Atlântica brasileira, B. espiritosantensis e B. ibitiocensis, são descritas e ilustradas. Begonia schenkii var. calvescens, endêmica dos Estados de Santa Catarina e Rio Grande do Sul, é transferida para o nível de espécie, com descrição e ilustrações complementares. É apresentado um mapa de distribuição para os três taxa.

New species in Adiantum and Pteris (Pteridaceae) from the Andes. Brittonia 56:82–88. 2004.—We describe, discuss, and illustrate four new species, one in Adiantum (A. capillatum A. R. Sm. & Prado, from Ecuador) and three species in Pteris (P. lellingeri A. R. Sm. & Prado, from Bolivia; P. venezuelensis A. R. Sm. & Prado, from Venezuela; and P. websteri A. R. Sm. & Prado, from Ecuador, Colombia, and Bolivia).

Espécies novas em Adiantum e Pteris (Pteridaceae) dos Andes. Brittonia 56: 82–88. 2004.–Descrevemos, discutimos e ilustramos quatro espécies novas, uma em Adiantum (A. capillatum A. R. Sm. & Prado, do Equador) e três em Pteris (P. lellingeri A. R. Sm. & Prado, da Bolívia; P. venezuelensis A. R. Sm. & Prado, da Venezuela e P. websteri A. R. Sm. & Prado, do Equador, Colômbia e Bolívia).

A new species of Passiflora in section Tetrastylis (Passifloraceae) and two overlooked species of Passiflora from Brazil. Brittonia 56: 89–95. 2004.—Passiflora contracta, a new species from coastal forests of Brazil, is described and illustrated. Based on recent collections, Passiflora hypoglauca and P. luetzelburgii, two rare and overlooked species last collected in the 19th century, have had their descriptions emended, are illustrated here for the first time, and have had their distributions expanded.

Stenocereus zopilotensis Arreola-Nava and Terrazas (Cactaceae), a new species from Mexico. Brittonia 56: 96–100. 2004.—Stenocereus zopilotensis Arreola-Nava and Terrazas, a new species from the Zopilote Canyon, municipality of Zumpango del Rio in the center of the state of Guerrero (Mexico), is described and illustrated. This new species is compared to Stenocereus quevedonis J. G. Ortega, S. fricii Sánchez-Mej., and S. pruinosus (Otto) Buxb. based on morphological similarity. Moreover, the new species grows sympatrically with S. pruinosus.

Stenocereus zopilotensis Arreola-Nava y Terrazas (Cactaceae), una nueva especie de México. Brittonia 56: 96–100. 2004.—Se describe e ilustra Stenocereus zopilotensis Arreola-Nava y Terrazas procedente de la Cañada del Zopilote en el municipio de Zumpango del Río en el centro del estado de Guerrero (Mexico). Se le compara con Stenocereus quevedonis J. G. Ortega, S. fricii Sánchez-Mej. y S. pruinosus (Otto) Buxb. que parecen ser las especies más parecidas morfológicamente. Además la nueva especie crece simpátricamente con S. pruinosus.