Dieter C. Wasshausen

New species of Stenandrium (Acanthaceae) from the Planalto of Brazil

Three new species ofStenandrium,S. hatschbachii from Minas Gerais,S. goiasense from Goiás, andS. irwinii also from Goiás, are described, illustrated, and compared with their closest relatives.

Kalbreyeracanthus kirkbridei (acanthaceae), a new species from Colombia

A new species Kalbreyeracathus kirkbridei, from the Sierra Nevada de Santa Marta, is described, illustrated, and compared with K. atropurpureus, the only other species in the genus.

NEW SPECIES OF HANSTEINIA (ACANTHACEAE) FROM COLOMBIA AND ECUADOR

New species of Hansteinia (Acanthacene) from Columbia and Equador, Brittonia 37: 203-208. 1985. – Two new species and a new variety, Hansteinia jamesonaii from Pichincha, Equador and H. Magdalensis and H. magdalenensis var. pilosa from the Sierra Nevada de Sta. Marta, are described, illustrated, and compared with H. charitopes their closest relative.

New species of Habracanthus (Acanthaceae) from Ecuador

Four new Ecuadorian species ofHabracanthus,H. asplundii from Pichincha,H. laxus andH. lugonis from Tungurahua, andH. luteynii from Napo, are described, illustrated, and compared with their closest relatives.

A new name in Dyschoriste (Acanthaceae)

Distinctly mucronate anther cells and the 4-seeded capsule ofHygrophila pringlei Greenman together with several other additional characters, suggest that this taxon would be better treated asDyschoriste rubiginosa, nom. nov.

Two new species of Habracanthus (Acanthaceae) from Colombia

Two new Colombian species ofHabracanthus,H. malacus from the Sierra Nevada de Santa Marta andH. latifolius from the Sierra de Perijá, are described, illustrated, and compared withH. antipharmacus, their closest relative.

New species of Justicia (Acanthaceae) from the Guianas

Four new species,Justicia oldemanii, J. mcdowellii, J. wilhelminensis, andJ. prevostiae are described, illustrated, and compared with their closest relatives. A key to species ofJusticia from the Guianas is also provided.

Begonia mariannensis (Begoniaceae), a new species from Trinidad, West Indies

Begonia (sect.Begoniastrum)mariannensis is described, illustrated, and compared with its closest relative,B. glandulifera Griseb., likewise from Trinidad. The new taxon differs markedly in its much smaller habit, distinctly differently shaped leaf blades, and its much-reduced peduncles.

A new species, new combinations, and a new name in Acanthaceae from northern South America

A new species of Acanthaceae (Ruellia saülensis) is described and illustrated from French Guiana, and three new combinations (Justicia potarensis, J. flaviflora, andJ. tobagensis) and one new name (Justicia coppenamensis) are proposed. The new species is compared to its closest relative (Ruellia rubra), and a justification of the transfers is provided.

Pranceacanthus coccineus (Acanthaceae), a new genus and species from Amazonian brazil

The new genusPranceacanthus, apparently most closely related to the bitypic genusJuruasia, is described and illustrated. Its sole species,P. coccineus, has been collected on “terra firma” in lowland Amazonian Brazil in the states of Amazonas and Mato Grosso and in the territory of Rondônia.