共查询到20条相似文献,搜索用时 15 毫秒
1.
James L. Luteyn 《Brittonia》2001,53(3):437-446
Satyria ventricosa andVaccinium monteverdense from Panama and Costa Rica, respectively, are described and illustrated.Gonocalyx megabracteolatus andVaccinium talamancense are new combinations. Relationships of the new species are discussed. Keys are provided for the entire genusGonocalyx, and forSatyria in Mesoamerica.
Resumen Se describenSatyria ventricosa yVaccinium monteverdense de Panamá y Costa Rica, respectivamente, con sus ilustraciones. Se hace una nueva combinación deGonocalyx megabracteolatus yVaccinium talamancense. También se discuten las relaciones entre las nuevas especies. Se incluyen claves para el género completoGonocalyx y para el géneroSatyria en Mesoamérica.相似文献
2.
Ricardo Kriebel 《Brittonia》2005,57(1):39-42
Columnea lariensis is described and illustrated as a new species from the Talamanca Mountains, Costa Rica. It is similar to C. canarina from Panama. Alloplectus weirii is here reported for the first time from Mesoamerica and an illustration is provided.
Resumen Columnea lariensis de la Cordillera de Talamanca, Costa Rica, es descrita e ilustrada. Es similar a C. canarina de Panamá. Alloplectus weirii se reporta para Mesoamérica por primera vez y se incluye una ilustración de la misma.相似文献
3.
A new species of Brachistus is described from the region of Chiriquí in Panama. Brachistus knappiae morphologically resembles Brachistus stramoniifolius, and has been confused with it in the past. The diagnostic features of Brachistus knappiae are discussed, and the plant is illustrated.
Resumen Se describe una especie nueva de la región de Chiriquí en Panamá. Brachistus knappiae es morfológicamente parecida a B. stramoniifolius, lo cual provocaba que fuera erróneamente identificada como esta especie en el pasado. Se discuten los caracteres diagnósticos de Brachistus knappiae y la planta es ilustrada.相似文献
4.
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. 相似文献
5.
Michael Nee 《Brittonia》1994,46(4):265-269
Talauma boliviana is described as new and illustrated. This species, first collected in 1989, is the only Magnoliaceae known from Bolivia.
It seems to be most closely related toT. sambuensis of northwestern Colombia and eastern Panama. 相似文献
6.
Dioscorea howardiana is proposed as a new species from Mexico and Central America as far south as Panama, and is described and illustrated. It
most closely resemblesD. liebmannii. Relationships, distribution, and ecological preferences of the new species are discussed.
Resumen Dioscorea howardianase propone como una especie nueva de México y Centroamérica, es descrita e ilustrada. Es semejante aD. liebmannii. Se discuten sus relaciones, su distribución geográfica y preferencias ecológicas.相似文献
7.
Michael Nee 《Brittonia》1996,48(4):574-579
Acanthosyris asipapote, a new species from the vicinity of Santa Cruz, Bolivia, is described and illustrated. It is most similar to A. paulo-alvinii Barroso, known only from the state of Bahia, Brazil, but differs by leaf characters, pilose filaments, and smaller seeds.
A key to the five woody genera and nine species of Santalaceae in South America is provided. Cervantesia, Jodina, and Myoschilos are probably monotypic; Santalum (in South America) has a single species, and Acanthosyris has five species. 相似文献
8.
Petra Hoffmann 《Brittonia》2008,60(2):136-166
Heterosavia (Phyllanthaceae) is segregated from Savia (tribe Bridelieae), recognized at generic rank, and placed in tribe Phyllantheae. Floral, fruit, leaf anatomical, leaf venation,
and pollen characters of the neotropical taxa previously united as Savia including Gonatogyne are discussed and illustrated. Keys to the three genera and to the species of Heterosavia are presented. Four species (all new combinations), Heterosavia bahamensis, H. erythroxyloides, H. laurifolia, and H. maculata, are recognized. The new combinations Heterosavia laurifolia var. intermedia and H. maculata var. clementis are proposed. The names Heterosavia, H. erythroxyloides, H. laurifolia, Savia clementis, S. clusiifolia, S. clusiifolia var. fallax, and S. longipes are lectotypified. Distribution maps and conservation assessments (IUCN ratings) of Heterosavia species and varieties are provided. 相似文献
9.
Polygala pauciramosa, a new species from the Federal District and the state of Goiás is described, illustrated, and compared with related species
of Polygala subgenus Hebeclada. The new species is an herb that grows in seasonally to permanently wet savannas. A key to the species of Polygala subgenus Hebeclada from Goiás state, Brazil is provided. 相似文献
10.
Lithospermum (Boraginaceae) comprises approximately 40 species in both the Old and New Worlds, with a center of diversity in the southwestern
United States and Mexico. Using ten cpDNA regions, a phylogeny of Lithospermum and related taxa was reconstructed. Lithospermum (including New World and Old World species) and related New World members of Lithospermeae form a monophyletic group, with
Macromeria, Onosmodium, Nomosa, Lasiarrhenum, and Psilolaemus nested among species of Lithospermum. New World Lithospermeae also is a monophyletic group, with Eurasian species of Lithospermum sister to this group. Because Lithospermum is not monophyletic without the inclusion of the other New World genera, species from these genera are transferred to Lithospermum, and appropriate nomenclatural changes are made. New combinations are Lithospermum album, Lithospermum barbigerum, Lithospermum dodrantale, Lithospermum exsertum, Lithospermum helleri, Lithospemum leonotis, Lithospermum notatum, Lithospermum oaxacanum, Lithospermum pinetorum, Lithospermum rosei, Lithospermum trinverium, and Lithospermum unicum; new names are Lithospermum chiapense, Lithospermum johnstonii, Lithospermum macromeria, Lithospermum onosmodium, Lithospermum rzedowskii, and Lithospermum turneri. 相似文献
11.
Anna Luiza Ilkiu-Borges 《Brittonia》2002,54(4):318-321
Pictolejeunea reginae, a new species from Venezuela is described and illustrated. It is the type of the new subgenusNeopitolejeunea Ilkiu-Borges, which is characterized by entire underleaves. A key to the two subgenera and four known species ofPictolejeunea is provided.
Ilkiu-Borges, A. L. (Museu Paraense Emílio Goeldi, C. P. 399, Belém, Pará, CEP 66040-170. Brasil: email: ilkiuborges@hotmail.com).Pictolejeunea reginae, a new species of Lejeuneaceae (Hepaticae) from Venezuela. Brittonia 54: 318–321. 2002.—Pictolejeunea reginae, uma nova espécie encontrada na Venezuela, é descrita e ilustrada. A espécie é tratada como tipo do novo subgêneroNeopictolejeunea Ilkiu-Borges, caracterizada pelos anfigastros inteiros. é apresentada uma chave para os dois subgêneros e as quatro espécies dePictolejeunea.相似文献
12.
Nine new species ofSolanum and two ofCapsicum are described from Bolivia. Notes are provided on some other species, including the complex typification ofSolanum aridum.Capsicum caballeroi, C. ceratocalyx, Solanum chalmersii, S. clandestinum, S. comarapanum, S. complectens, S. monanthemon,
S. moxosense, S. pedemontanum, S. saturatum, andS. whalenii are described and illustrated, and a new name,S. scuticum, is proposed for the species previously known asS. tabacifolium. 相似文献
13.
14.
John F. Pruski 《Brittonia》1998,50(4):473-482
The new combinations Conyza laevigata (Astereae), Praxelis diffusa (Eupatorieae), and Riencourtia pedunculosa (Heliantheae) are made. Conyza laevigata includes C. apurensis; Praxelis diffusa includes P. pauciflora and the type of the genus, P. villosa; and Riencourtia pedunculosa includes R. glomerata and R. spiculifera, the type of the genus. Lectotypes are designated for names of five species described by Richard. The current names of other
species of Compositae described by Richard in 1792 are given, including the reduction of Eupatorium incisum to Chromolaena odorata. Labeling errors are discussed, and the type of Erigeron laevigatus is taken to be from the West Indies. Riencourtia is newly documented for Bolivia and Panama. 相似文献
15.
Dieter C. Wasshausen 《Brittonia》2002,54(4):286-297
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. 相似文献
16.
In the course of monographic work in Myrtaceae it has become evident thatEugenia prismatica cannot be accommodated within any existing genus in the family. Therefore, a new genus,Curitiba, is described to contain it and the new combinationCuritiba prismatica is made.Curitiba is diagnosed by a combination of 4-angled hypanthia and fruits, ovules radiating from a central protruding placenta, and
seed coats with wavy rows of papillae. A key is provided to distinguishCuritiba from the Caribbean and Mesoamerican genusMosiera, where the species also had been placed before this transfer, and from other 4-merous genera in Brazil of subtribe Myrtinae.
In the Atlantic Forest of Brazil where the family Myrtaceae is one of the most species rich and ecologically important plant
families, the discovery ofCuritiba reveals a unique evolutionary lineage, highlights the endemism present in the Atlantic Forest, and underscores, the urgent
need for conservation of this rapidly disappearing and highly endangered biome. 相似文献
17.
Two new species ofGalipea are described and illustrated:Galipea maxima, which is known from the wet forests of Ecuador, and Peru, andGalipea ramiflora, from Bolivia and Peru. Their main diagnostic features are pointed out, and a brief discussion on the relationships of the
new taxa to other species ofGalipea is provided. 相似文献
18.
Thomas F. Daniel 《Brittonia》1999,51(2):124-127
The new nameRuellia comonduensis is provided for the species previously known asR. cordata Brandegee.Ruellia chilpancingana, a new species known only from Guerrero in southwestern Mexico, is described and compared to morphologically similar species.
It is unique among Mexican species ofRuellia based on the following combination of characters: caducous bracteoles and secondary bracteoles, multiflowered dichasia from
leaf axils, yellowish and cylindric-funnelform corollas, exserted stamens, and few (four or fewer) seeds per capsule. Macromorphological
features and pollen ofR. chilpancingana are illustrated. 相似文献
19.
A new species ofTachia,T. longipes, is described and illustrated. It is distinct from the other species ofTachia not only in its leaf and stem morphology but also in its characteristic pollen. A revised key to the neotropical species
ofTachia is also provided.
Studies for theFlora of the Guianas. No. 87. 相似文献
20.
【背景】香蕉枯萎病是香蕉的顽固性疾病,制约着香蕉产业的发展,因此,筛选出对香蕉枯萎病菌(尖孢镰刀菌古巴专化型4号生理小种,简称Foc4)具有抑制活性的生防菌株具有重要意义。【目的】分离香蕉林土壤样品中放线菌并进行物种的初步鉴定,测定其对包括香蕉枯萎病致病菌的7种病原菌的拮抗活性,获得高活性菌株,以获得解决香蕉枯萎病的生物防治策略。【方法】采集多份广西地区香蕉林土壤样品,采用超声波等手段对其预处理,设置多种特异性培养基从中分离放线菌资源,对获得的放线菌进行基于16SrRNA基因序列的物种鉴定,以7种病原菌为靶标,采用平板对峙法从中筛选抑菌活性菌株,最后采用菌丝生长速率法对Foc4的抑菌率进行测定。【结果】从香蕉林土壤中分离出138株放线菌均为链霉菌,其中5株为潜在新种,分别为X1085、X1052、X2052、X3059和X4046;筛选出具有抑菌活性的菌株77株,阳性率为55.8%。20株对Foc4具有抑制活性,其中4株拮抗效果明显,抑制率大于80%,菌株X4050的抑菌率高达93.76%。【结论】初步明确了香蕉林土壤中可培养放线菌的物种信息,其中部分放线菌为未知物种,活性分析显示一半... 相似文献