Two new species of Rhynchospora section Psilocarya (Cyperaceae)

Two new species ofRhynchospora sectionPsilocarya are described and illustrated.Rhynchospora eburnea is known from Amazonian Venezuela and nearby Brazil whileRhynchospora waspamensis is known only from eastern Zelaya, Nicaragua. These species are distinguished from most of the species of sectionPsilocarya by means of a key to the species found in the Americas south to and including the Amazon Basin.     

A new species of Abildgaardia (Cyperaceae) from Brazil

Abildgaardia disticha from Estado da Bahia in Brazil is described as new. This species is unique in the tribe Abildgaardieae in having orthodistichous spikelets, and in several respects is intermediate between the subgenera Abildgaardia and Bulbostylis.     

A new unispiculate species of Bulbostylis (Cyperaceae) from Brazil

Bulbostylis splendens from Brazil is described, illustrated, and compared to a related taxon.     

Two new species of Rhynchospora (Cyperaceae) from Mexico

Two new species ofRhynchospora from Mexico are described and illustrated. The white-bractedR. oaxacana is clearly a member of subsectionLongibracteatae which is otherwise found only in South America. A key to all the species of that subsection is provided. The thickened achene summit and slightly sunken style base appear to placeR. durangensis in sectionHarveyae.     

Two new species of Hippocrateaceae from Brazil

Two new species of Hippocrateaceae from Brazil are described and illustrated:Pristimera sclerophylla Lombardi, the one species of the genus that occurs in the xerophytic vegetation of northeastern Brazil, andCheiloclinium puberulum Lombardi, a species with puberulent inflorescences from the rain forests of the Amazon basin.     

Carex tenuirostrata (Cyperaceae), a new species of section Confertiflorae from Zhejiang, China

Carex tenuirostrata, a new species of C. sect. Confertiflorae, is described from Pingyang and Putuo counties of Zhejiang province, China. It is morphologically similar to C. pseudodispalata, but differs in its androgynous lateral spikes; distended perigynia attenuately contracted into a short beak at the apex; ellipsoid-obovoid achenes contracted into a slender beak at the apex; and long-sheathed lower bracts. Scanning electron microscope (SEM) photographs of the achenes of the new species and C. pseudodispalata are provided for comparison.     

Anatomical features of species of Cyperaceae from northeastern Brazil

Seventy-three species from 17 genera of Cyperaceae were studied with the aim of identifying and confirming those species with Kranz anatomy. Among the species studied, 36 exhibited Kranz anatomy; 37 did not. Of the four types of Kranz anatomy recognized in Cyperaceae, three were encountered: the chlorocyperoid type in the genera Cyperus, Kyllinga, Lipocarpha, Pycreus, and Remirea; the fimbristyloid type in Abildgaardia, Bulbostylis, and Fimbristylis; and the rhynchosporoid type in Rhynchospora. Non-Kranz anatomy was confirmed in species of the following genera: Becquerelia, Calyptrocarya, Cyperus, Diplacrum, Eleocharis, Fuirena, Hypolytrum, Pleurostachys, Rhynchospora, and Scleria. The anatomical data obtained corroborate earlier studies of species of Cyperaceae as to the presence of Kranz anatomy and the anatomical types in several species and the “Kranzkette” pattern in Cyperus ligularis and Cyperus pohlli.     

Trilepis tenuis (Cyperaceae: Trilepideae), a new species from Rio de Janeiro, southeastern Brazil

Trilepis tenuis is described from the state of Rio de Janeiro, southeastern Brazil. It differs from the other four species ofTrilepis in its delicate habit and combined features of the contraligules and fructifications.     

Two new species of Esterhazya (Scrophulariaceae) from Brazil

Barringer, Kerry (Department of Botany, Field Museum of Natural History, Chicago, IL 60605). Two new species of Esterhazya (Scrophulariaceae) from Brazil. Brittonia 37: 195–198. 1985.—Esterhazya petiolata is a distinctive species with ovate, petiolate leaves, spreading brances, and broadly tubular-campanulate flowers. It is known from the Serra Dourada of Goiás. Esterhazya eitenorum has narrow, lanceolate leaves, acute calyx lobes, and purple-pink flowers and is known from the planalto of Mt. Itatiaia.     

Two new species of Serjania (Sapindaceae) from Brazil

Two new Brazilian species,Serjania fluminensis andS. unidentata, are described, illustrated, and discussed.     

Two new species of Sauroglossum (Orchidaceae) from Peru and Brazil

Two new species of the orchid subtribe Spiranthinae are described—Sauroglossum dromadum andS. organense. Illustrations of the new entities are provided and their systematic positions are briefly discussed.     

Two new species of Aristolochia (Aristolochiaceae) from Brazil and Peru

Aristolochia dalyi, from western Peruvian and Brazilian Amazonia, andA. bahiensis, from Bahia, Brazil, are described and illustrated. The species belong toAristolochia ser.Thyrsicae andA. ser.Hexandrae subser.Anthocaulicae, respectively. A key to the eight western Amazonian species of the seriesThyrsicae is presented.Aristolochia dalyi closely resemblesA. silvatica Barb. Rodr. from the Río Negro basin, andA. bahiensis—the first cauliflorous species ofAristolochia known from the Mata Atlantica—is similar toA. guentheri O. C. Schmidt andA. klugii O. C. Schmidt, from the Western Amazon basin. Characters based primarily on the perianth shape, along with some vegetative features, are used to distinguish the two newly described species from their close relatives.

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Resumen   Aristolochia dalyi, del occidente de la amazonía peruana y brasilera, yA. bahiensis, del estado de Acre, en Brasil, son descritas e ilustradas. Las especies pertenecen aAristolochia ser.Thyrsicae yA. ser.Hexandrae subser.Anthocaulicae respectivamente.Aristolochia dalyi es incluída en una clave para diferenciarla de las especies de la serieThyrsicae presentes en la Amazonía occidental, y resulta ser similar aA. silvatica Barb. Rodr, propia de la cuenca del río Negro; por su parte,A. bahiensis, hasta ahora la única especie deAristolochia cauliflora hallada en la Mata Atlántica, es similar aA. guentheri O. C. Schmidt yA. klugii O. C. Schmidt, propias del occidente de la cuenca amazónica. Los caracteres diagnósticos de las nuevas especies se basan principlalmente en la forma del perianto, aunque algunas diferencias vegetativas son también reconocidas.

     

Two new species of Serjania (Sapindaceae) from southeastern Brazil

One new species ofSerjania (S. erythrocaulis) belonging to theS. paradoxa group ofSerjania sect.Eurycoccus is described and illustrated bringing the total number of species in this group to eight. A second new species,Serjania divaricocca, belonging to sect.Serjania is also described and illustrated.

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Resumen  Una especie neuva deSerjania (S. erythrocaulis) perteneciente al grupoS. paradoxa de la secciónEurycoccus es descrita e ilustrada. Con esta especie, el numero total de especies conocidas para este grupo aumenta a ocho. Una segunda nueva especie,Serjania divaricocca, perteneciente a la secciónSerjania es también descrita e ilustrada.

     

Two new species of Petunia (Solanaceae) from southern Brazil

Two new species of Petunia Jussieu from Santa Catarina and Rio Grande do Sul states in Brazil are described and compared with the other seven specieS. A key and synopsis of all the species of Petunia are provided     

Two new species of Mesosetum (Gramineae: Paniceae) from Brazil

Mesosetum alatum and M. longiaristatum, both from Central Brazil, are described and illustrated.     

Two new species of Alcantarea (Bromeliaceae,Tillandsioideae) from Brazil

Alcantarea turgida andA. tortuosa are described and illustrated as new species from southeastern Brazil. The relationships ofA. turgida withA. extensa and withA. vinicolor and ofA. tortuosa withA. farneyi and withA. benzingii are discussed.