A pair of species of Tauschia Schltdl. (Umbelliferae/Apiaceae) from Mexico

Two species of Tauschia—T. spellenbergii from Chihuahua and T. beruloides from Michoacán and México—are described as new.     

Synopsis of the tribe Bocageeae (Annonaceae), with revisions of Cardiopetalum,Froesiodendron, Trigynaea,Bocagea, and Hornschuchia

The tribal name Bocageeae Endlicher is reestablished and the tribe is circumscribed on the basis of solitary internodal ebracteate pedicels that are articulated at the base, and pollen shed in polyads of eight or more grains. Septate anther locules, large pollen size, and seed appendages are prevalent in the tribe. Intectate pollen with free-standing columellae, rare in Annonaceae, occurs not only in the genusTrigynaea but also in some species ofBocagea andHornschuchia. As defined here, the Bocageeae include seven neotropical genera:Cymbopetalum, Porcelia, Bocagea, Cardiopetalum, Froesiodendron, Hornschuchia, andTrigynaea. The latter five genera are revised and the treatments include ten new species:Cardiopetalum plicatum, Froesiodendron urceocalyx, Hornschuchia lianarum, H. santosii, H. leptandra, Trigynaea cinnamomea, T. lanceipetala, T. triplinervis, T. lagaropoda, andT. axilliflora, all from tropical South America. A new combination,Froesiodendron longicuspe, changes the rank of that taxon from subspecies to species.Cardiopetalum surinamense is removed fromFroesiodendron and reassigned toCardiopetalum on the basis of its connate petals, dehiscent monocarps, and seeds with bilobed arils. A cladogram provides an explicit hypothesis of intergeneric relationships in the tribe. The new combinationOnychopetalum periquino, based onTrigynaea periquino, is made.     

Trichomanes resinosum (Hymenophyllaceae), a new species from southern Venezuela and adjacent Guyana

A new species,Trichomanes resinosum, is described and compared to two similar species,T. elegans Rich. andT. rigidum Sw., with which it has been confused.     

Sixteen new species of Thelypteris (Thelypteridaceae) from Bolivia

We describe 16 new species of Thelypteris (Thelypteridaceae) from Bolivia: T. aymarae, T. chaparensis, T. fasciola, T. fayorum, T. inaequilateralis, T. lumbricoides, T. madidiensis, T. minima, T. nephelium, T. parva, T. pelludia, T. pilonensis, T. rosulata, T. sapechoana, T. stephanii, and T. yungensis.     

A new species of Tetracera (Dilleniaceae) from Guyana

A new species of the genusTetracera (T. maguirei) from the sandstone savannas and shrubby forests in Guyana is described, illustrated, and compared toT. asperula Miq. A key to the species ofTetracera from the Guianas is provided.     

Physalis (Solanaceae) and allied genera: Tzeltalia, a new genus from the highlands of southern Mexico and northwestern Guatemala

A morphological analysis ofPhysalis and several closely related genera, with emphasis on a group of species known as “atypicalPhysalis,” showed that two of the atypical species are better treated as a distinct genus.Tzeltalia is described and two new combinations are made:T. amphitricha andT. calidaria. Restricted to the highlands of Chiapas, Mexico, and adjacent Guatemala,Tzeltalia is distinguished fromPhysalis by a combination of characters including shrubby habit; fasciculate flowers; lobed corolla; scabrate pollen; and non-invaginated, partially open, coriaceous, and reticulate-veined fruiting calyx.

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Resumen  El análisis de un grupo de especies atípicas dePhysalis y otros géneros relacionados demostró que dos especies deben considerarse como otro género. Se describeTzeltalia, un género restringido a los altos de Chiapas, México, y Guatemala y se hacen dos nuevas combinaciones,T. amphitricha yT. calidaria.Tzeltalia se distingue dePhysalis por una combinación de caracteres que incluyen un habito arbustivo, flores fasciculadas, corola lobulada, polen escabroso, cáliz del fruto no invaginado, parcialmente abierto, coriáceo y con venación reticulada.

     

Thinouia restingae (Sapindaceae: Paullinieae), una nueva especie de Brasil

Resumen  La especie nueva Thinouia restingae, de las regiones nordeste y sudeste de Brasil, es descrita, ilustrada y comparada con la especie más próxima, T. ventricosa. Adicionalmente se describen caracteres de venación de los folíolos y micromorfológicos del polen. La especie nueva pertenece a Thinouia sección Petalodine, la cual se caracteriza por los pétalos iguales o mayores que el apéndice. También se presenta una clave para todas las especies de Thinouia reportadas hasta la fecha para Brasil.

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A new species, Thinouia restingae, from northeastern and southeastern Brazil, is described, illustrated, and compared to its putative closest relative, T. ventricosa. Additionally, venation characters of the leaflets and micromorphological characters of pollen grains are described. The new species belongs to Thinouia section Petalodine, which is characterized by petals that are equal or longer than their appendage. A key to species of Thinouia presently known from Brazil is also included.

     

Six new species of <Emphasis Type="Italic">Timonius</Emphasis> (Rubiaceae: Guettardeae) from Papuasia

Six new species of Timonius (T. alius, T. bosaviensis, T. creber, T. cyathicalyx, T. insularis, and T. pullenii) are described from New Guinea and surrounding islands. The new species are illustrated and notes are provided on their habitat, distribution and phenology. None of the new species is readily assignable to any previously recognized subgenus or species-group.     

A synopsis of the genus allomarkgrafia (Apocynaceae)

The nine species of the genusAllomarkgrafia are treated synoptically, with a review of their systematics and nomenclature. Two new species,Allomarkgrafia ecuatoriana andA. insignis, and a new combination,Allomarkgrafia campanulata, are proposed here.     

A new species of Talauma (Magnoliaceae) from Bolivia

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.     

New species of Hypolytrum Rich. (Cyperaceae) from the Neotropics

Five new species ofHypolytrum Rich. from South America are described and illustrated.Hypolytrum amorimii andH. jardimii, both of sect.Bullata T. Koyama, are species with pseudopetioles and colored leaves, and endemic to the rain forest of southeastern Brazil.Hypolytrum bahiense (sect.Hypolytrum), a species with a lax synflorescence and two, free and lightly scabridulous floral bracts, is endemic to the rain forest of southeastern Bahia, Brazil.Hypolytrum leptocalamum (sect.Hypolytrum), a species with lax synflorescence and spike ellipsoid to cylindrical, is restricted to area of tepuis in the Guayana Highland (Brazil, Guyana, and Venezuela).Hypolytrum paraense (sect.Hypolytrum), a species with three, partly connate and densely scabridulous floral bracts, is restricted to the rain forest of the Amazon Basin, in the state of Pará, Brazil.     

A new species of Tachia (Gentianaceae) from Suriname

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.     

New species of Ficus (Moraceae) from Brazil

Eight new species from Brazil,Ficus acreana,F. bahiensis, F. duartei, F. duckeana, F. hatschbachii, F. lagoensis, F. laureola, andF. rupicola, are described and illustrated. The new species are compared with other species of the genus.     

Townsendia gypsophila (Compositae: Astereae): a new species from northern New Mexico

Townsendia gypsophila, a new species from Sandoval Co., New Mexico, is described and illustrated. It is a narrowly distributed obligate gypsophile closely related toT. fendleri andT. incana. It overlaps the ranges of the two taxa at the edge of their distributional limits in New Mexico.     

Dilleniaceae Novae Neotropicae VIII. Two new species of Davilla from Brazil

Two new species of the genusDavilla from Brazil are described and illustrated (D. kubitzkii andD. morri). The new species are assigned to sect.Homalochlaena and their relationships with allied species are discussed.     

New species and a new combination in Myrtaceae from northeastern South America

Three new species of Myrtaceae (Calyptranthes bracteata, Eugenia gonglycocarpa, andMyrcia rupta) from northeastern South America are described and illustrated, and a new combination (Eugenia tetramera) is proposed. The closed-calyx and the completely or partially fused cotyledons ofMyrcia rupta, unusual features for the genus, are discussed and compared with related species inMyrcia andMarlierea.     

Novelties in spermacoceae (Rubiaceae) from Bolivia and Paraguay

One new Bolivian species (Borreria pazensis) and three new varieties (Borreria densiflora var.minima, Richardia, scabra var.chacoensis andStaelia virgata var.killeenii) are described and illustrated. The genusDiodella, with three species (D. apiculata comb. nov., D. radula comb. nov., andD. teres), is reported for the first time.Borreria limae, B. wunschmannii, B. scabiosoides var.scabiosoides, andB. scabiosoides var.anderssonii are also reported as new to Bolivia.     

四川毛茛科二新种——乌头属一新种和唐松草属一新种

该文描述了自四川西部发现的毛茛科二新种,包括四川乌头属一新种,即泸定乌头(Aconitum ludingense W.T.Wang),此新种隶属于乌头属乌头亚属,以及四川唐松草属一新种,即狭药唐松草(Thalictrum stenantherum W.T.Wang),给出了此新种与其近缘种六脉萼唐松草之间的形态区别.