A new species of Brickellia,subgenus Phanerostylis (Asteraceae)

Brickellia nesomii, a new species from northeastern Mexico, is described. It belongs to the subgenus Phanerostylis, which Gray originally placed in Eupatorium; King and Robinson elevated the taxon to generic rank; it is herein kept at the subgeneric level but transferred to Brickellia. Reasons for this transfer are given. Barroetea glutinosa, positioned by King and Robinson in Phanerostylis, is excluded.     

Six new species of Elaphoglossum (Elaphoglossaceae)

The fern genusElaphoglossum is well represented in wet, mountainous regions of Latin America, from which many species have recently been described. Six more new species ofElaphoglossum are reported:E. bryogenes from Ecuador andE. caudulatum, E. diminutum, E. delasotae, E. lellingeri, E. subcordatum, andE. xiphiophorum from Colombia.     

New genera and species of ericaceae (Vaccinieae) from Costa Rica and Panama

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.     

Nine new elaphoglossums (Elaphoglossaceae) from Mexico

Nine new species ofElaphoglossum are described from southern and western México:E. alan-smithii, E. decursivum, E. dissitifrons, E. leonardii. E. lepidopodum, E. mcvaughii, E. parduei, E. rzedowskii, andE. seminudum.     

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 revision of the West Indian species of Lepanthes (Orchidaceae). III. Cuba

A study of herbarium material ofLepanthes indicates that there are at least 18 species on Cuba. The history of the collections and publications on the genus from the island is summarized, and a detailed key to the species is given. One new combination is proposed (L. blepharophylla) and the following species are described as new:L. acunae,L. dressleri,L. cubensis,L. grisebachiana,L. obliquiloba, andL. occidentalis, of which three are from western provinces and two have been associated with inappropriate names.L. mandibularis Reichb. f. is tentatively considered a synonym ofL. chrysostigma Lindl. although the type ofL. mandibularis could not be found. The range of variation included under the nameL. fulva Lindl. suggests that more than one species is involved.     

Three New Species of Vernonia (Compositae: Vernonieae) from Mexico

Three new Mexican species ofVernonia,V. macphersonii,V. pugana andV. tequilana, are described.     

Taxonomic,nomenclatural, and reproductive notes on Carlowrightia (Acanthaceae)

Information onC. arizonica, C. hapalocarpa, C. mcvaughii, C. parviflora, andC. pectinata published in a monograph of the genus in 1983 is updated. The generic affinities ofC. myriantha andC. sinaloensis are resolved, with the former placed inCarlowrightia and the latter removed to a separate genus. The new combinationC. neesiana, necessitated by conservation of the generic nameCarlowrightia, is provided for the species previously known asC. glandulosa. Two new species from western Mexico,C. fuertensis andC. huicholiana, are described, mapped, and illustrated.     

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 and new combinations in Briquetia and Hochreutinera,and a discussion of the Briquetia generic alliance (Malvaceae)

Two new species ofBriquetia,B. sonorae andB. inermis, are described from northern Mexico, and another species that ranges from Mexico to Bolivia is transferred into the genus asB. spicata. The genus (previously known as monotypic, Paraguayan-Brazilian) is thereby enlarged from one species to four, and its geographical and morphological limits are greatly expanded. Also, a Mexican species ofAbutilon is transferred toHochreutinera, asH. amplexifolia, enlarging that genus from one to two species. On the basis of this new information, the limits of the informalBriquetia alliance are reconsidered; it is considered to include onlyBriquetia, Dirhamphis, andBatesimalva.     

New species and combinations in Odontonema (Acanthaceae)

Six new species ofOdontonema are described:Odontonema album, O. amicorum, O. breedlovei, O. laxum, O. mortonii andO. speciosum. In addition two new combinations are proposed forOdontonema,O. glaberrimum andO. nitidum var.album, and nine species are transferred fromOdontonema to other acanthaceous genera, namelyAnisacanthus ramosissimus, Buceragenia foliaceo-bracteata, Pseuderanthemum cuspidatum, P. hookerianum, P. interruptum, P. paniculatum, P. stenostachyum, Stenostephanus longistaminus andStreblacanthus dubiosus.     

Two new species of Senecio section Palmatinervii (Asteraceae) from northeastern Mexico

Two new species ofSenecio,S. sundbergii andS. neogibsonii, belonging to the sectionPalmatinervii are described, illustrated, and compared to their nearest relatives,S. aschenbornianus andS. lanicaulis.     

New species and new combinations in the sematophyllum subpinnatum complex (Sematophyllaceae)

Three new tropical American species ofSematophyllum are described with relatively broad leaves and short upper leaf cells:S. cubense, S. cataractae, andS. oedophysidium. The Central AmericaS. apaloblastum andS. barnesii are new combinations.Sematophyllum galipense, S. amnigenum, andS. cochleatum are briefly discussed.     

Three new species of Dasylirion (Nolinaceae) from Mexico and a clarification of the D. longissimum complex

Three new species ofDasylirion and a new variety ofD. longissimum Lem. from the mountains of northern Mexico are described and illustrated. Two of the new species are from northwestern Mexico:D. gentryi, with large, rosecolored fruits and glossy, non-waxy leaves; andD. sereke, characterized by roundish fruits with an unusuall large style.Dasylirion miquihuanense is a new species from northeastern Mexico with narrow, strictly upright leaves and widely separated marginal prickles. TheDasylirion longissimum complex consists of two species,D. quadrangulatum S. Wats andD. longissimum Lem., characterized by narrow, quadrangulate leaves with reduced or absents marginal prickles. Distinguishing features of these two species, which have often been confused, are presented andD. longissimum var.treleasei, characterized by small flowers and fruits, is described.     

Species of Nectria (Ascomycetes,Hypocreales) having orange perithecia and colorless,striate ascospores

Nine species ofNectria are described or redescribed. Ascospores of all are colorless and striates; their perithecia are orange and do not become red in KOH. Three groups of species are represented. One group includesNectria grammicospora, N. cf.grammicospora, N. subquaternata, and the new species:N. grammicosporopsis, N. lucifer, andN. neogrammicospora. A second group includes the new speciesN. chlorogloea andN. septomyrotheciae. The third group is represented by the single new speciesN. dacryocarpa. The life-cycles of these species are described. Anamorphs ofN. grammicospora, N. grammicosporopsis, N. lucifer, andN. subquaternata are species ofClonostachys. The anamorph, ofN. neogrammicospora isAcremonium- orCephalosporiopsis-like in having monophialidic conidiophores and phragmosporous conidia, and that ofN. cf.grammicospora isAcremonium-like with amerosporous conidia. The anamorphs ofN. chlorogloea andN. septomyrotheciae have green conidia. The anamorph ofN. chlorogloea isMyrothecium sp.; its conidia are unicellular and the conidioma is a synemma. The anamorph ofN. septomyrotheciae isSeptomyrothecium cf.uniseptatum; its conidioma is a sporodochium and the conidia are bicellular. The new genus and speciesDacryoma alba are described for the anamorph ofN. dacryocarpa. All of these fungi are pantropical or Australasian in distribution.     

Three species of Tibouchina (Melastomataceae) from Bahia,Brazil

Three new species ofTibouchina,T. barnebyana, T. lithuphila. andT. oreophila, all from Bahia, Brazil, are described and discussed.Tibouchina barnebyana and trichomes ofT. oreophila are illustrated.