Glabrous Petals Research Articles

Taxonomic studies on the genus Reevesia (Malvaceae: Helicteroideae) II: on the identity of R. orbicularifolia and a new species from southwestern Guangxi, China

An examination of herbarium specimens and type material shows Reevesia orbicularifolia is conspecific with R. orbicularis, which is distributed in Vietnam. Therefore, R. orbicularifolia is reduced as a synonymy of R. orbicularis. A new species R. napoensis from northwestern Guangxi, China is described and illustrated. The new species is similar to R. rotundifolia and R. orbicularis but differs in having 7-veined cordate leaf blades, three bracts, 4-lobed sepals, and glabrous petals.

Citrus × pubinervia, a new natural hybrid species from central China

Citrus × pubinervia D. G. Zhang & Z. H. Xiang, Y. Wu, a new hybrid species is described and illustrated from central China. This new species is closely related to C. × polytrifolia in evergreen treelets and petiole with narrow wings but mainly differs from the latter by glabrous petals and glabrous fruits. The molecular phylogenetic analysis which based on four cpDNA (matK, rbcL-atpB, trnL-trnF, psbA-trnH) verifies the results of morphological analysis.

<strong>A new species of <em>Aconitum</em> (Ranunculaceae) from Indian Eastern Himalayan state of Sikkim</strong>

Aconitum sikkimensis, a new species from Sikkim in the Indian Eastern Himalaya, is described and illustrated in this article. A. hookeri is morphologically closest species to the new species and it resembles in colour of the flower and the shape of the lateral sepals. However, it differs in plant height (A. sikkimensis being taller than A. hookeri), the shape of leaf and degree of dissection in the lamina, number of bracts and their shape and size, length of petiole, semi-orbicular upper sepal (vs. obliquely erect), distinctly curved, pubescent petals (vs. straight, glabrous petals) having spathulate lips (vs. obovate), and well-developed staminal pilose hairs and teeth (vs. non-developed, glabrous). Based on population data, the species was assigned the threat status of ‘Critically Endangered’ following IUCN criteria.

Camellia debaoensis (Theaceae), a new species of yellow camellia from limestone karsts in southwestern China

Camellia debaoensis R.C.Hu & Y.Q.Liufu, sp. nov. is described and illustrated as a new species from southwestern Guangxi, China. It is morphologically similar to Camellia pubipetala Y. Wan & S. Z. Huang, C. mingii S.X. Yang and C. tuyenquangensis D.V. Luong, N.N.H. Le & N. Tran, but it differs from these species in having glabrous young branches, glabrous petiole, glabrous sepals, glabrous petals, glabrous stamens and glabrous ovary, 10 petals, cylindrical ovary and style 3-lobed to 1/6 style length.

Rubus huagaoxiensis and R. lingtianus (Rosaceae), two new species from Sichuan, China

Rubus huagaoxiensis and R. lingtianus, two new species of Rosaceae from Sichuan, Southwest China, are described and illustrated. Rubus huagaoxiensis is morphologically similar to R. setchuenensis, but differs from the latter by gray tomentose branchlets, thicker leaves which are usually adaxially pubescent, larger and subflabellate stipules, 0.3–0.5 cm long pedicels, sepals which are triangular to ovate and abaxially densely gray tomentose-villous, white petals which are abaxially and adaxially villous along midrib, villous styles, and spheroidal pollen grains. Rubus lingtianus is morphologically similar to R. setchuenensis and R. huagaoxiensis, but differs from R. setchuenensis by having leathery leaves, acute lobes of leaf blade, larger and subflabellate stipules, broadly ovate sepals with acute or obtuse apex, white flowers, red fruits, and subprolate pollen grains with verrucate-striate-perforate ornamentation. Rubus lingtianus differs from R. huagaoxiensis by having leathery leaves, mature leaf blade which is adaxially glabrous or soft-hairy along veins only, usually glabrous petals, styles base with few soft hairs, red fruits, and subprolate pollen grains with verrucate-striate-perforate ornamentation. Morphological comparison among these three species is given.

Perrottetiawichmaniorum (Dipentodontaceae), a new species from Kaua'i, Hawaiian Islands.

Perrottetiawichmaniorum Lorence & W. L. Wagner, sp. nov. is described as endemic to Kaua‘i. It differs from its Hawaiian congener P.sandwicensis by its larger, thicker, more densely hirtellous-villosulous rugose leaves with a smaller length:width ratio [1.5–1.7:1], larger inflorescences with usually four degrees of branching with moderately to densely hirtellous axes, and flowers with glabrous petals. This new species falls into the Endangered (EN) category when evaluated using the IUCN Red List criteria for endangerment based on its small area of occupancy, a decline in the extent and quality of its habitat, and number of mature individuals.

Pimpinella enguezekensis (Apiaceae), a new species from East Anatolia Region (Turkey)

The new species Pimpinella enguezekensis (Apiaceae) is described from Ağılbaşı village (Engüzek), Darende district in Malatya city (E of Turkey). It shows a unique combination of morphological characteristics concerning the size, shape and margins of leaves, the indumentum of petals and the morphology of fruits. It is related to Pimpinella species with entire leaves and yellow flower, such as P. flabellifolia, P. paucidentata, P. sintenisii and P. nephrophylla of section Reutera subsection Flabellifoliae. The new species is more closely related to P. flabellifolia, with which it shares some morphological similarities, but from which it is easily distinguished by its multi-stemmed habit, smaller rhomboid leaves with spiny dentate margins, glabrous petals, and smaller fruits lacking ribs. According to micromorphological studies, fruits of P. enguezekensis are glabrous and show reticulate striate surface. Furthermore, they also show remarkable anatomical differences with regard to fruits of P. flabellifolia, the commissure width in P. enguezekensis being more than twice smaller than in P. flabellifolia and the mericarp length/width ratio in P. enguezekensis being also smaller than in P. flabellifolia. An identification key of the yellow-flowered species with entire leaves is reported. Moreover, a distribution map for P. enguezekensis and other Turkish yellow-flowered related species is presented.

Studies in Asian <I>Nervilia</I> (Orchidaceae) V: <I>Nervilia futago</I>, a Cryptic New Species from Southwest Japan Confirmed by Morphological, Cytological, and Molecular Analyses

Abstract Widespread and poorly studied species complexes confound phylogenetic understanding of the Old World terrestrial orchid genus Nervilia. Recent taxonomic studies have suggested greater species richness in Asia than previously envisaged.We used morphological, cytological, and molecular phylogenetic analyses to confirm the existence of a novel, cryptic species of the Nervilia adolphi-punctata species alliance in southwest Japan, supporting earlier findings from a genetic fingerprinting study. Nervilia futago is formally described and illustrated here. In the vegetative state, the new species is practically inseparable from the more widespread N. nipponica, with which it co-occurs at several sites, but it can be distinguished in flower by its glabrous petals, by the lack of tall clavate hairs on the lip, and by the placement of the pollinia on the stigma prior to anthesis. Chromosome numbers and DNA content also differ. Despite their wide geographic separation, sequence data indicate greater affinity...

On the morphological position of Paepalanthus subgenus Psilandra (Eriocaulaceae)

Paepalanthus subgen. Psilandra comprises two species known only from the type collections. The aim of this study is to evaluate their unique floral morphology within a given phylogenetic context and its implications for taxonomy. Flowers of both species were analyzed, described, and photographed using a digital microscope. Taxonomically relevant characters were mapped on previous molecular phylogenies. The flowers of both species fit the Paepalanthoideae pattern and are quite similar to each other. The petals of the pistillate flowers, although free, show evidence of previous fusion in the middle. The free condition is interpreted to be secondary, probably because of the handling of the specimens or to the current developmental stage. Character mapping indicates that both species share floral features with Syngonanthus but not with Paepalanthus. Therefore, based on the median fusion of the pistillate flower petals, absence of floral bracts, petals of the pistillate flower being shorter than the sepals, simple stigmas in the commissural position, the pedicellate pistillate flower, and the glabrous petals and sepals, we transfer P. subgen. Psilandra to synonymy of Syngonanthus sect. Syngonanthus and combine both species in this genus.

Phylogenetic position of African and Malagasy Pimpinella species and related genera (Apiaceae, Pimpinelleae)

The phylogenetic position of the African and Malagasy species of Pimpinella is assessed using nrDNA ITS sequence data and a representative sampling of the genus, including 16 species from Africa and Madagascar and 26 species from Eurasia. The results of maximum parsimony and Bayesian analyses of these data show that the African and Malagasy species ally with their Eurasian counterparts in Pimpinelleae. The genus Pimpinella is rendered paraphyletic by the inclusion of African Cryptotaenia and the small African and Malagasy endemic genera Frommia and Phellolophium. Within a paraphyletic Pimpinella, three major clades are recovered, with the African species occupying two of these clades. The current sectional classification of the genus, based predominantly on fruit vestiture, is largely artificial. Chromosome base number, however, was found to be consistent with the groupings recovered in the molecular analyses. Those African and Malagasy Pimpinella species with a chromosome base number of x = 11 and largely glabrous petals and fruits, form the earliest diverging clade together with Frommia, which also has a base count of n = 11 and glabrous petals and fruits. The remaining African species ally with several Eurasian species of Pimpinella and share a chromosome base number of x = 9 and usually hairy petals and fruits.

Taxonomy of Wiborgiella (Crotalarieae, Fabaceae), a Genus Endemic to the Greater Cape Region of South Africa

Abstract A taxonomic revision of the recently described genus Wiborgiella is presented. Nine species are recognized within the genus, two of which are newly described, W. dahlgrenii and W. vlokii . The genus is endemic to the Cape region of South Africa and most species are highly localized and rare. Wiborgiella species can be distinguished from other genera in the tribe Crotalarieae by a combination of brown young branches (early formation of bark in the stems of the perennial species), laminar trifoliolate leaves, glabrous petals, a 4 + 6 anther arrangement, and oblong, wingless, inflated fruit. Anatomical studies revealed that all species of the genus have dorsiventral leaves (mesophyll differentiated into palisade parenchyma adaxially and spongy parenchyma abaxially) with mucilage cells in the epidermis which distinguishes Wiborgiella from other closely related genera, such as Calobota which has isobilateral leaves without mucilage cells. The fruits of Wiborgiella species are all thin-walled, have hig...

Alyssum misirdalianum (Brassicaceae), a New Species from Southern Turkey

A new species, Alyssum misirdalianum Orcan & Binzet (Brassicaceae), is described from southern Anatolia, Turkey. The new species is restricted to southern Anatolia, in the southern part of Mersin Province. The morphological characters (oblanceolate leaves, obovate and glabrous petals, and ovate siliculae, 6–7 × 3–4.5 mm) support its placement in Alyssum L. sect. Gamosepalum (Haussknecht) Dudley, and the species appears to be most closely related to A. corningii Dudley.

A New Species of Leandra (Melastomataceae) from Brazil

Abstract Leandra hermogenesii (section Oxymeris), a new endemic species of Melastomataceae from Sao Paulo, Brazil, is described and illustrated. The distinguishing characteristics of the species include its leaves, which are subcartaceous, ovate to broadly ovate, 5(–7)-plinerved, 5.6–9.6 cm wide, and have a rounded base, its smaller bracts, bracteoles, and glabrous petals , and its larger ovary. A discussion and an identification key to morphologically related species are also presented.

A second species of Restrepiella (Orchidaceae: Pleurothallidinae)

Abstract Pupulin, F. & Bogarin, D.: A second species of Restrepiella (Orchidaceae: Pleurothallidinae). — Willdenowia 37: 323–329. — ISSN 0511-9618; © 2007 BGBM Berlin-Dahlem. doi:10.3372/wi.37.37122 (available via http://dx.doi.org/) Restrepiella lueri is described as a species new to science and illustrated from Costa Rica. The new species differs from R. ophiocephala by (1) the free lateral sepals with irregularly dentate margins, (2) the glabrous petals provided with three low, longitudinal keels, (3) the elliptic, simple lip, longer than the column and as long as the petals, ciliate along the margins and hirsute at apex, with three longitudinal keels from the base extending to the middle of the blade, and (4) the column without a foot. A key to the species of Restrepiella is provided.

Novitates Gabonensis 59: Combretum wilksii (Combretaceae), a New Species from Gabon

The new species Combretum wilksii Jongkind from Gabon is described. The species belongs to Combretum Loefling sect. Combretum. The combination of the almost flat upper receptacle, the subcircular, glabrous petals ca. 2 mm long, and the glabrous disk distinguishes this species from all other Combretum species in Africa and, more particularly, from related Gabonese species such as C. scandens Liben, C. polyanthum Jongkind, and C. demeusii De Wildeman.

A NEW SPECIES OF STELIS (ORCHIDACEAE) FROM SOUTHERN VENEZUELA UNA NUEVA ESPECIE DE STELIS DEL SUR DE VENEZUELA

Stelis bricenorum, a new species from the Municipality of Guainía, Amazonas state, Venezuela, is described and illustrated. It has been collected both in the Rio Negro (and therefore the Amazon, along the Yavita-Maroa road) and Orinoco river (“caño Chimita”, affluent of the Atacavi river) basins. Stelis bricenorum is similar to S. santiagöensis, from which it can be easily distinguished by its relatively smaller habit, the wider sepals, and the glabrous petals.

A Rvision of Erythrochiton Sensu Lato (Cuspariinae, Rutaceae)

In the rutaceous subtribe Cuspariinae, species with relatively large, valvate, colored calyces have been assigned to Erythrochiton, but differences in arrangement of leaves, type of inflorescence, union of petals, of filaments, and of carpels, indument of corolla and testa, appendages of anthers, height of the intrastaminal disc, and exine of the pollen argue for the recognition of three genera. Erythrochiton s. str., characterized by often perennating inflorescences, connate, usually glabrous petals, free carpels, tomentulose seeds, and spinulose exine, consists of seven species of which four are new: E. fallax from the eastern flanks of the Andes from Colombia to Bolivia, E. odontoglossus from western Ecuador and adjacent Peru, E. trichanthus from eastern Peru, and E. gymnanthus from Costa Rica. The assignment to Toxosiphon of four species with woolly, coherent petals, connate carpels, glabrous seeds, and reticulate exine necessitates three new combinations: T. carinatus, T. macropodus, and T. trifoliatus. Recognition of a third unispecific genus with opposite simple leaves, sparsely pubescent, coherent, clawed petals, and spinulose exine requires a new genus name, Desmotes, and a new combination, D. incomparabilis.

An Obscure New Species of Elaeocarpus from Central New Guinea

Summary. Elaeocarpus bilongvinas is described and its relationships discussed; comparisons are made with known species and the difficulty in placing the new species in existing infrageneric groupings demonstrated. Amongst recent collections distributed by LAE is one made by N. A. Vinas et al. from the Star mountains of central New Guinea. New taxa may be expected from this relatively under-explored area; this one represents an Elaeocarpus with curiously long slender twigs bearing small papery leaves only near the tips, scattered short very slender racemes and minute flowers with 4-5 stamens, glabrous petals and a 3-locular ovary, each loculus 2-ovulate. Elaeocarpus bilongvinas Coode sp. nov. ab E. bilobato petalis glabris 5-7-laciniatis, ovario sparse piloso, pedicello usque 8 mm longo gracillimo differt; ab E. sericoloide loculis 2-ovulatis, antheris obtusis, foliis minoribus numquam oppositis recedit; a speciebus sectionis Dactylosphaerae laciniis petalorum nec incrassatis nec inflexis, sepalis in fructu non persistentibus, inflorescentia pedicellisque multo gracilioribus, floribus paucioribus saepe 4-meris distinguitur. Species staminibus tantum 5 (ut videtur) in genere egregia. Typus: New Guinea, N. A. Vinas et al. LAE 59347 (holotypus K; isotypi n.v.). Tree, 8 m tall, dbh 10 cm. Twigs long and slender to very slender, with dark purplish-brown bark, ? densely hairy at first, the hairs relatively coarse, stout and + adpressed, later glabrous. Stipules subulate, 0-5 mm or less, minutely hairy, or apparently absent. Leaves grouped at twig tips;