PASSIFLORA TACANENSIS

Passiflora tacanensis Port.‐Utl. from Mount Tacaná in south eastern Mexico on the border with Guatemala is fully described for the first time with illustrations of flowers, leaves and pollen; its history and cultivation are provided.     

A new species of Passiflora (Passifloraceae) from Amazonian Brazil

Passiflora cordistipula, a new species of subg.Passiflora, ser.Lobatae, from the state of Amazonas, Brazil, is described and illustrated.     

A new species of Passiflora (Passifloraceae) from Minas Gerais, Brazil

Passiflora boticarioana, a new species of subgen.Passiflora, supersect.Stipulata, sect.Dysosmia, from the state of Minas Gerais, Brazil, is described, illustrated, and compared with morphologically similar species.     

A new species of Cuscuta (Convolvulaceae) from Michoacán, Mexico

A new species, Cuscuta cotijana, is described and illustrated from the Trans-Mexican Volcanic Belt in northwestern Michoacán, Mexico. The species is most closely related to Cuscuta jalapensis, C. mitriformis, C. rugosiceps and C. lindsayi, from which it differs by the large spur-like projections on the outer calyx lobes and the ovoid to conical capsule with a small intrastylar aperture.     

Brongniartia papyracea (Fabaceae: Faboideae): A new species from the tropical deciduous forest of southern Jalisco and southwestern Michoacán, Mexico

A new species,Brongniartia papyracea (Fabaceae: Faboideae), from southern Jalisco and southwestern Michoacán, is described and illustrated. Its morphological affinities withB. podalyrioides from central Mexico are discussed, and habitat data are given.

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Résumé  Se describe una especie nueva,Brongniartia papyracea (Fabaceae: Faboideae), del sur de Jalisco y suroeste de Michoacán, México. Se discuten sus afinidades morfológicas conB. podalyrioides des centro de México y se proporcionan datos de su hábitat.

     

Review of the neotropical endemics Burmeistera, Centropogon, and Siphocampylus (Campanulaceae: Lobelioideae), with description of 18 new species and a new section

Burmeistera, Centropogon, and Siphocampylus together comprise more than 500 species endemic to the Neotropics, Current knowledge of these genera is unsatisfactory, with much diversity yet to be described. Over the past seven years, one out of every 28 specimens received for identification has represented a new species, many characterized by unique or unusual character states. Siphocampylus smilax (Bolivia) is unique in the genus in its parallelodromous leaf venation and extra-floral nectaries. Centropogon dianae (Peru) cannot be accommodated in any recognized infrageneric taxon, and a new section, Centropogon sect. Niveopsis, is proposed for it. The flowers of C. steinii (Ecuador) are the smallest known in the genus, while C. connatilobatus (Venezuela) is the first species to combine arbusculiform pubescence and connate calyx lobes. Burmeistera venezuelensis is only the second species of the genus known to occur in Venezuela and the first to be endemic; similarly, Centropogon wilburii is only the third species of Centropogon known from Mexico and the first to be endemic to that country. Additional novelties are also described.     

Pinus georginae (Pinaceae), a new species from western Jalisco, Mexico

Pinus georginae is described and illustrated as a new endemic species from the valleys in the southern basin of Río Ameca, Jalisco, western Mexico. It is closely related to Pinus praetermissa; however, after studying the cones and anatomy of the leaves in detail, characteristics were revealed that identify P. georginae as a distinct species.

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Resumen  Se describe e ilustra Pinus georginae como una especie nueva, endémica de algunos valles intermontanos al sur del Río Ameca, Jalisco, en el Occidente de México. Los árboles se parecen a Pinus praetermissa; sin embargo, al estudiar con detalle los conos y la anatomía de las acículas lo ubican a Pinus georginae como una entidad biológica con categoría específica independiente.

     

Evaluation and application of methods for biological assessment of streams: summary of papers

The false mussel Mytilopsis adamsi, originally described from the Pacific coast of Panama, is reported for the first time as an introduced species in the Urías estuary and an adjacent shrimp farm, on the Pacific coasts of Mexico. In the 19th century, this species was transported from the Pacific coast of Panama, reaching the Indo-Pacific Ocean, but it had not been previously reported in other coasts of the American Pacific. Its recent and irregular presence in this small estuary near shore the Mazatlán harbor and an adjacent shrimp farm suggests that the species was introduced into the area but it cannot still be considered as a harmful invader. The presence of the species in the shrimp farm may indicate that it was introduced along with shrimp stocks from Central America, although its passive transportation to the estuary via ballast water or attached to hulls is not discounted.     

A new species of <Emphasis Type="Italic">Utricularia</Emphasis> (Lentibulariaceae) from Guerrero,Mexico

Utricularia regia is described and illustrated. It occurs in the Sierra Madre del Sur region of Guerrero, Mexico, and belongs to section Psyllosperma; a key to differentiate the species of sect. Psyllosperma is included. The new species is similar to Utricularia hintonii and U. petersoniae, from which it differs in the unusual division of the upper lip of the corolla into four lobes and its peculiar coloration pattern. A table comparing the differences among these three species is presented. Utricularia regia adds a new, narrowly endemic species to the flora of Guerrero, Mexico.

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Resumen  Se describe e ilustra como especie nueva para la ciencia a Utricularia regia a partir de ejemplares procedentes del estado de Guerrero, México. La nueva especie se ubica en la sección Psyllosperma y está mejor relacionada con Utricularia hintonii y U. petersoniae; de las que se diferencia por la división del labio superior de la corola en cuatro lóbulos y por su peculiar coloración; se presenta una tabla en la que se comparan más ampliamente estas tres especies y se incluye también una clave para diferenciar las especies de la sección Psyllosperma. Utricularia regia agrega un elemento endémico más a la flora de Guerrero y de México.

     

Una especie nueva de <Emphasis Type="Italic">Lepechinia</Emphasis> sección <Emphasis Type="Italic">Glomeratae</Emphasis> (Lamiaceae) de México

During the study of the Lamiaceae from Guerrero, Mexico, specimens of Lepechinia sect. Glomeratae were found, similar to L. glomerata, but different in having larger flowers that are orange at the base and red at the apex, with a tubular corolla that is invaginated at the base, and widely ovate bracts that are acuminate at the apex. The new species, Lepechinia flammea, is described and illustrated. A key to distinguish the species is included.

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Resumen  Durante el estudio de la familia Lamiaceae en el Guerrero, México, se encontraron algunos ejemplares de Lepechinia sección Glomeratae, cercanamente relacionados con L. glomerata, pero que difieren por presentar flores más grandes, anaranjadas en la base y rojas en el ápice, corola tubular, el tubo invaginado en la base y brácteas ampliamente ovadas, con el ápice acuminado. Se presenta una descripción de la nueva especie, Lepechinia flammea, así como ilustraciones y una clave para separar ambas especies.

     

Hallucinogenic Mushrooms in Mexico: An Overview

Hallucinogenic Mushrooms in Mexico: An Overview. Psilocybe, with 53 known hallucinogenic species in Mexico, is the most important and diverse group of sacred mushrooms used by Mexican indigenous cultures. Psilocybe caerulescens, known by the present-day Nahuatl Indians as teotlaquilnanácatl, is hypothesized to be the ceremonially-used teonanácatl mushroom cited by Sahagún in the 16th century, the true identity of which has remained obscure for centuries. Correcting a widely disseminated error derived from early published information on Mexican hallucinogenic mushrooms, emphasis is placed on the fact that Panaeolus species have never been used traditionally in Mexico. Reports of the use of species of Amanita, Clavaria, Conocybe, Cordyceps, Dictyophora, Elaphomyces, Gomphus, Lycoperdon, Psathyrella, and Stropharia as sacred or narcotic mushrooms are discussed. A brief history of the discovery of hallucinogenic mushrooms in Mexico is presented, as well as notes on their taxonomy, distribution, and traditional use in Mexico.

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Hongos Alucinógenos en México: Historia, Taxonomia, Distribución Geográfica y Uso Tradicional. Psilocybe, con 53 especies alucinógenas conocidas en México, es el grupo más importante y más diverso de hongos sagrados usados por las culturas indígenas mexicanas. Se propone aquí que Psilocybe caerulescens, nombrado por los nahuatls de hoy día teotlaquilnanácatl, es el hongo ceremonial teonanácatl citado por Sahagún en el siglo XVI, cuya identidad verdadera permanece oscura desde hace siglos. A fin de corregir un error muy diseminado derivado de los primeros datos publicados sobre los hongos alucinógenos mexicanos, se hará hincapié en el hecho de que las especies Paneolus nunca han sido usadas tradicionalmente en México. Se discutirán aquí informes sobre el uso de especies de Amanita, Clavaria, Conocybe, Cordyceps, Dictyophora, Elaphomyces, Gomphus, Lycoperdon, Psathyrella y Stropharia como hongos sagrados o narcóticos, y se presentará también una breve historia del descubrimiento de hongos alucinógenos en México, como también algunos datos sobre su taxonomía, su distribución, y su uso tradicional en México.

     

A new species of Sanicula L. (Umbelliferae/Apiaceae) endemic to Baja California, Mexico

A new species of the genusSanicula (sect.Sanicoria) endemic to the southern Sierra Juárez of Baja California, Mexico, is described and illustrated.Sanicula moranii resemblesS. deserticola andS. bipinnatifida, but has thicker basal leaves, with broader petioles and rachises, and shorter fruit prickles that are confined to the apical part of the mericarps. The taxonomic relationships of these species are discussed, along with aspects of their distribution and habitat.

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Resumen  Una neuva especie del géneroSanicula (secciónSanicoria) endémica de la Sierra Juárez de Baja California, México, es descrita e ilustrada.Sanicula moranii presenta similitud conS. deserticola yS. bipinnatifida, no obstante tiene gruesas hojas basales con pecíolos y raquis anchos, y espínulas del fruto más cortas que se distribuyen únicamente en la parte apical de los mericarpos. Además, se comentan las relaciones taxonómicas de las tres especies, así como algunos aspectos de sus distribuciones y hábitats.

     

<Emphasis Type="Italic">Ampelozizyphus guaquirensis</Emphasis> (Rhamnaceae), a new tree species endemic to the Venezuelan Coastal Cordillera

Ampelozizyphus guaquirensis, native to the central portion of the Coastal Cordillera of Venezuela, is newly described and illustrated. It differs from the only other species in the genus, A. amazonicus, in its arborescent (vs. lianoid) habit, subsessile (vs. pedunculate) inflorescence, deciduous (vs. persistent) calyx lobes in fruit, and presence (vs. absence) of nectaries at the base of the leaf blades. Ampelozizyphus is now a prime example of the disjunct distribution of closely related species between Amazonia and the Coastal Cordillera of Venezuela.

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Resumen  Se describe e ilustra Ampelozizyphus guaquirensis, una especie nativa de la zona central de la Cordillera de la Costa de Venezuela. Se distingue de la única otra especie en el género, A. amazonicus, por su hábito arborescente (vs. trepador), su inflorescencia subsesil ( vs. pedunculada), los lóbulos del caliz decíduos (vs. persistentes) en fruto, y la presencia (vs. ausencia) de nectarios en la base de las láminas foliares; estos caracteres ahora amplian el concepto morfológico del género. Ampelozizyphus se convierte así en un ejemplo notable de la distribución disyunta de especies afines entre Amazonía y la Cordillera de la Costa de Venezuela.

     

Plant regeneration from protoplast cultures of Passiflora edulis var. flavicarpa Deg., P. amethystina Mikan. and P. cincinnata Mast.

Summary Protoplasts isolated from seedling cotyledons of yellow passionfruit (Passiflora edulis var. flavicarpa Deg.) and two related wild species, P. amethystina Mikan. and P. cincinnata Mast., divided in culture and produced calli. Shoot regeneration was obtained in MS medium (Murashige and Skoog 1962) containing 2.0 mg/l 6-benzylaminopurine (BAP). Regenerated plants produced roots in half-strength hormone-free MS medium and could be transferred to soil after being acclimatized.     

A new species of Pilocarpus (Rutaceae) from northern Brazil

A new species,Pilocarpus trifoliolatus Skorupa & Pirani from Pará, Brazil, is described and illustrated. The new taxon resemblesP. microphyllus Stapf ex Wardleworth andP. alatus C. J. Joseph ex Skorupa by its winged rachis and petiole and by its dilated stigma.     

Tetrastylis ovalis: A second case of bat-pollinated passionflower (Passifloraceae)

The floral biology ofTetrastylis ovalis and its pollination by bats was studied in southeastern Brazil. The flowers ofT. ovalis seem more fitted to bat-pollination than those ofPassiflora mucronata, the other known chiropterophilous passionflower. Two species of bats were observed visiting flowers ofT. ovalis: the phyllostomidsGlossophaga soricina andRhinophylla pumilio. Due to the attributes ofTetrastylis, its presumed primitiveness and a better defined bat-pollination syndrome we suggest that chiropterophily evolved independently in the former genus and inPassiflora.     

Zapoteca quichoi (Leguminosae, Mimosoideae), a new species from southeastern Mexico

Zapoteca quichoi, a new species endemic to southern Tabasco, Mexico, is described and illustrated. This species exhibits morphological characteristics that place it within subgenus Amazonica, together with Z. amazonica and Z. microcephala, from Peru and Colombia, respectively.

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Resumen  Se describe e ilustra Zapoteca quichoi (Leguminosae, Mimosoideae), una nueva especie de Tabasco, México. Esta especie exhibe características morfológicas que la ubican dentro del subgénero Amazonica, junto con Z. amazonica y Z. microcephala, especies nativas de Perú y Colombia respectivamente.

     

Notes on the floral morphology in Vivianiaceae (Geraniales)

The functional floral morphology of the three genera of Vivianiaceae (= Ledocarpaceae, Geraniales), Rhynchotheca, Viviania and Balbisia, is compared. Likely pollination mechanisms are inferred from morphology and field observations. The flowers of Viviania are nectariferous and apparently zoophilous with nectar as the (primary) pollinator reward. Balbisia has pollen flowers without nectaries, its showy corolla indicates that it is also zoophilous with pollen as sole pollinator reward; bees were observed as flower visitors. One taxon (B. gracilis) may be anemophilous. Rhynchotheca has flowers without petals, with large, pendulous anthers and lacks nectaries. It shows synchronous mass flowering in its natural populations and is evidently anemophilous. A comparison with other Geraniales shows that nectar flowers with small anthers are likely the ancestral condition in Vivianiaceae. This suggests that the pollen flowers with larger anthers of Balbisia and Rhynchotheca may represent an apomorphic condition. The documentation of pollen flowers and anemophily in Vivianiaceae expands the range of known floral and pollination syndromes in Geraniales.     

卷叶薄齿藓和北美赤藓形态特征及其地理新分布

通过对采自贵州省梵净山和内蒙古赛罕乌拉自然保护区的苔藓植物标本进行鉴定,发现了丛藓科的2个新分布种——卷叶薄齿藓(Leptodontium pungens)和北美赤藓(Syntrichia amphidiacea)。卷叶薄齿藓为中国新记录种,首次在中国贵州省梵净山发现,其主要特征为茎无中轴分化,具透明层,常分布于火山和温带高海拔地区。北美赤藓为内蒙古新分布种,发现于内蒙古赛罕乌拉自然保护区,其主要特征为叶腹面近叶尖处生有大量芽胞,成熟芽胞棕色,多细胞,圆柱状。本研究对卷叶薄齿藓和北美赤藓的形态特征和地理分布进行了具体描述,并提供了图版和分种检索表。