共查询到20条相似文献,搜索用时 31 毫秒
1.
Michael A. Sundue 《Brittonia》2014,66(2):174-185
Mycopteris, a new genus of grammitid ferns, is described and combinations are made for the species that belong to it. Mycopteris is diagnosed by castaneous rhizome scales with turgid cells, usually pectinate laminae, blackish petioles and rachises, blackish pinna costae and veins, reddish setae, cretaceous hydathodes, glabrous sporangia, and the presence of Acrospermum ascomes. It is entirely neotropical, ranging from Mexico east into the West Indies and south to Bolivia. Mycopteris is one of two genera of grammitid ferns that are consistently associated with Acrospermum, an epibiotic ascomycete that produces black clavate fruiting bodies. Seventeen species of Mycopteris are recognized here, including one new species (M. longipilosa) and one elevated from the rank of variety to species (M. costaricensis). The following additional combinations are made here: M. alsopteris, M. amphidasyon, M. attenuatissima, M. cretata, M. grata, M. leucolepis, M. leucostica, M. longicaulis, M. pirrensis, M. praeceps, M. semihirsuta, M. steyermarkii, M. subtilis, M. taxifolia, and M. zeledoniana. Lectotypes are chosen for Ctenopteris leucosticta, Polypodium amphidasyon, and Polypodium pectinatum var. hispidum. For each accepted species, full synonymy and geographical range are provided. Taxonomic discussion is provided for species not widely recognized in previous treatments. 相似文献
2.
Meredith A. Lane 《Brittonia》1996,48(4):532-541
Gundlachia, a genus of shrubs occurring in the Caribbean islands, is treated as comprising two species, one of which has six varieties. Five new combinations are made: Gundlachia corymbosa var. apiculata (Britton & S. F. Blake) M. A. Lane, G. corymbosa var. compacta (Urb. & Ekman) M. A. Lane, G. corymbosa var. cubana (Britton & S. F. Blake) M. A. Lane, G. corymbosa var. foliosa (Britton & S. F. Blake) M. A. Lane, and G. corymbosa var. ocoana (Urb. & Ekman) M. A. Lane. Gundlachia is probably most closely related to Gymnosperma. 相似文献
3.
Steven R. Hill 《Brittonia》1980,32(4):464-483
The genusMalvastrum A. Gray is interpreted to include 22 taxa in 14 species. Seven taxa are here described as new, namely:M. americanum var.stellatum,M. tomentosum subsp.pautense,M. bicuspidatum subsp.campanulatum,M. bicuspidatum subsp.oaxacanum, M. bicuspidatum subsp.tumidum var.tumidum, M. bicuspidatum subsp.tumidum var.glabrum, andM. coromandelianum subsp.fryxellii. In addition, two new combinations are proposed, namely:M. tomentosum andM. coromandelianum subsp.capitato-spicatum. 相似文献
4.
Rupert C. Barneby 《Brittonia》1997,49(4):452-457
Three new species of Mimosa are described: M. (sect. Batocaulon) epitropica Barneby & León de la Luz from Mexico (Baja California Sur); and two from planaltine Brazil, M. (sect. Habbasia) bispiculata Barneby and M. (sect. Mimosa) demissa Barneby. The affinity of each is discussed, and all are illustrated. 相似文献
5.
6.
Job Kuijt 《Brittonia》1980,32(4):518-529
Three new species,Cladocolea biflora Kuijt,Struthanthus condensatus Kuijt, andS. lojae Kuijt are described and six new combinations,Cladocolea diversifolia (Benth.) Kuijt,C. lenticellata (Diels) Kuijt,Dendrophthora virgata (Trel.) Kuijt,Korthalsella chilensis (Hook. & Arn.) Kuijt,Phthirusa retroflexa (Ruiz & Pavon) Kuijt, andStruthanthus flexilis (Rusby) Kuijt are proposed. Nomenclature of two more neotropical Loranthaceae,Psittacanthus ramiflorus (DC.) G. Don andStruthanthus interruptus (H.B.K.) Blume is revised. 相似文献
7.
Two new species are described, Borreria cerradoana and B. velascoana, from Bolivia and Brazil, and a new combination is made, B. spinosa var. minima. Through an identification key, all 28 species of Borreria for Bolivia are recorded, and comments on geographical distribution and habitat are provided. Borreria brachystemonoides, B. poaya, and B. tenera are confirmed as new records for the country. 相似文献
8.
Robert D. Dorn 《Brittonia》1998,50(2):193-210
Salix section Longifoliae occurs from Alaska to Guatemala and from the Atlantic to the Pacific. Nine taxa are here accepted as five species with one of the species including two subspecies and four varieties. the holotype of Salix taxifolia Humb., Bonpl. & Kunth represents the same taxon as the lectotype of Salix microphylla Schltdl. & Cham. Material recently called S. taxifolia is given a new name. Salix exilifolia Dorn. The name Salix fluviatilis Nutt is considered to be synonymous with S. melanopsis Nutt. One new variety is described and two new combinations are made under Salix exigua Nutt. 相似文献
9.
Frederick H. Dobson 《Brittonia》1977,29(2):183-190
The genusBunchosia is ascribed to Humboldt, Bonpland & Kunth and should be cited asBunchosia Rich.ex H.B.K. Three new Central American species,B. brevisurcularis,B. ternata, andB. tutensis, are described, illustrated and plotted on a distribution map. 相似文献
10.
Five species previously included inForsstroemia Lindb. are excluded:F. leptodontoidea Buck is a synonym ofMiyabea fruticella (Mitt.) Broth. (Thuidiaceae);F. rigida Dix. becomesNeolindbergia plicata Stark & Buck, nom. nov. (Prionodontaceae);F. dixonii Tosco & Piovano is a synonym ofLevierella fabroniacea C. Müll. (Fabroniaceae);F. filiformis M. X. Zhang becomesLeptopterigynandrum filiforme (M. X. Zhang) Stark & Buck, comb. nov. (Leskeaceae); andF. secunda Dix. & Badhw. is placed in a new genus,Bryonorrisia Stark & Buck, asB. secunda (Dix. & Badhw.) Stark & Buck, comb. nov. (Anomodontaceae). 相似文献
11.
A new species, Ipomoea tabascana, is described from Mexico, and the combination I. batatas var. apiculata is made for plants endemic to Veracruz. Comments on the alliance of I. umbraticola with the section Batatas are given. 相似文献
12.
13.
Two new monotypic genera,Didonica andUtleya, are described, withD. pendula from Panama andU. costaricensis from Costa Rica.Disterigma trimera (Panama),D. utleyorum (Costa Rica, Panama, Colombia, and Ecuador),Lateropora santafeensis (Panama),Lysiclesia panamensis (Panama),Macleania talamancensis (Costa Rica),Themistoclesia costaricensis (Costa Rica) andT. horquetensis (Panama),Vaccinium costaricense andV. orosiense (both from Costa Rica) and V.jefense (Panama) are all described as new. New combinations are provided for the PanamanianVaccinium floccosum (=Symphysia floccosa) and the West IndianVaccinium racemosum (=Symphysia racemosa). Keys are provided for the Central American species ofDisterigma andThemistoclesia, the species ofLateropora andLysiclesia, and the Costa Rican and Panamanian species ofVaccinium. Six new species are illustrated. 相似文献
14.
Mary T. Kalin Arroyo 《Brittonia》1973,25(2):177-191
Limnanthes floccosa Howell is a variable autogamous species of recent origin. The phenetic relationships of a large number of populations ofL. floccosa were studied using taximetric techniques. Five subspecies are recognized inL. floccosa on the basis of the taximetric results.Limnanthes floccosa ssp.californica andL. floccosa ssp.grandiflora are described as new, andL. floccosa ssp.pumila andL. floccosa ssp.bellingeriana are proposed as new combinations. Aspects of autogamy responsible for the highly discrete pattern of variation inL. floccosa are discussed. 相似文献
15.
Frank White 《Brittonia》1979,31(4):480-482
A conspectus of the subgenera and sections ofMagnistipula is provided. Of the two subgenera occurring on the African mainland, subgenusMagnistipula is divided into the sectionsMagnistipula,Animalculum andPeregrinator, whereas subgen.Pellegriniella is monotypic. A Malagasy subgenus,Tolmiella, is new; its two species,M. cerebriformis andM. tamenaka, are transferred fromHirtella. 相似文献
16.
Job Kuijt 《Brittonia》1976,28(2):231-238
A new genus of small-flowered Loranthaceae,Maracanthus, is described from northernmost Colombia and adjacent Venezuela.Maracanthus has indeterminate, spicate inflorescences with decussate, sessile flowers, each bracteolate. It is most closely related toOryctanthus but differs in being functionally dioecious, in having smooth pollen grains, and in lacking the stellate fiber bundles characteristic ofOryctanthus leaves. There are two species,M. chlamydatus (Rizzini) Kuijt (the type species), andM. pedunculatus Kuijt, a new species. 相似文献
17.
Four species of Mimosa, M. aureliana, M. chacoënsis, and M. tobatiensis known only from eastern Paraguay, and M. castanoclada known from northwestern Paraguay and eastern Bolivia, are described, figured, and compared with near kindred. 相似文献
18.
19.
Rupert C. Barneby 《Brittonia》1984,36(2):167-173
One new species,Astragalus tiehmii, and two new varieties,A. convallarius var.margaretae andA. oophorus var.lavinii, are described from Nevada; the relationships of each are discussed and the first is illustrated. Two new combinations,A. eurylobus (Barneby) Barneby andA. serenoi var.shockleyi (M. E. Jones) Barneby are proposed and defended. A new species,A. bryogenes, is described from high Andean Peru (Junín). 相似文献
20.
Brian M. Boom 《Brittonia》2005,57(2):105-107
Remijia hubbardiorum B. M. Boom, endemic to white sandcampinas orerra firme forest in the Rio Uatumã region in the State of Amazonas of north central Brazil, is described and illustrated, and its morphological differentiation with respect toR. asperula Standley is discussed. 相似文献