New Species Of Acanthaceae Research Articles

Strobilanthes sripadensis, a new species of Acanthaceae from Sri Lanka

Strobilanthes sripadensis, a new species of Acanthaceae from Peak Wilderness Nature Reserve, Sri Lanka is described and illustrated. Both morphological and palynological evidence clearly indicate that S. sripadensis is a distinct species. The new species is closely related to S. pentandra, but differs by having short acuminate leaf apex, entire or slightly sinuate leaf margin, 5–7 pairs of lateral veins, outermost bract longer than the inner one, bract, bracteole, and calyx pubescent, white corolla with prominent dark purple lines at throat and fertile stamens 4.The full description, line drawings, photographs, and information on habitat and ecology, distribution, phenology are also provided. It is accessed to be Critically Endangered according to the IUCN Red List categories and criteria.

Strobilanthes glandulata (Acanthaceae), a new species from Sri Lanka based on the morphological and molecular evidences

Strobilanthes glandulata, a new species of Acanthaceae is described from Sri Lanka. It has been previously misidentified as Strobilanthes lupulina. It is similar to S. lupulina having an inflorescence of heads, funnel-shaped gradually widened corolla, hispids on the stem, and both surfaces of leaves and petioles, but can be easily distinguished from the latter by having different pollens, bracts arranged in well-spaced, margin crenate, and densely covered with glandular-hairy. The phylogenetic analyses indicate that it is a member of the native species of the genus Strobilanthes in Sri Lanka. A full description, detailed illustrations, pollen morphology, and complete chloroplast genome are provided.

Rungiafangdingiana (Acanthaceae), a new species from Guangxi, China.

Rungiafangdingiana, a new species of Acanthaceae from Guangxi, China is described and illustrated. This new species belongs to Rungiasect.Rungia, and resembles R.sinothailandica and R.burmanica in the erect perennial herbaceous habit, elliptic leaves and inflorescence form, but differs mainly by the indumentum and the morphology of the bracts and corolla. The pollen and seed micromorphology of this new species are studied, with photographs and a line drawing provided.

Cosmianthemum melinhense (Acanthaceae), a new species from the Me Linh Station for Biodiversity in northeastern Vietnam

Cosmianthemum melinhensis, a new species of Acanthaceae is described and illustrated from northern Vietnam. It is morphologically allied to C. guangxiense, C. knoxiifolium, and C. viriduliflorum but differs in the habit, shape and trichomes of the leaves, stem, bracts, bracteole, corolla and fruits. This species is assessed as “Vulnerable” (VU) according to IUCN Red List Categories and Criteria.

A new and endangered species of Justicia L. (Justicieae-Acanthaceae) from the riparian forests of northern Goiás State, Brazil

Justicia pusilla, a new species of Acanthaceae from Brazil, is described and illustrated. The new species is one of the smallest plants in the genus. It is morphologically allied with Justicia laevilinguis and “Justicia indespecta”, but differs from both by a set of characters related to habit, leaves, spikes, bracts, bracteoles, calyx, corolla and seeds. It is considered endangered due to its restricted geographic distribution and low population density.

Strobilanthes medahinnensis (Acanthaceae) a new species, based on morphological and molecular data, from the Peak Wilderness Nature Reserve, Sri Lanka

Strobilanthes medahinnensis, a new species of Acanthaceae is described and illustrated from Sri Lanka. The new species is similar to S. anceps in having ovate leaves, yellow gland dots of abaxial leaf surface and reflexed bracts but differs by rounded stem, leaves with acuminate apex, elongated spikes, lanceolate outermost bract with long acuminate apex. The establishment of the new species is supported by complete plastome genome analyses.

Strobilanthes sunhangii (Acanthaceae), a new species from Tibet, China.

A new species of Acanthaceae, Strobilanthes sunhangii, is described from Mêdog County, Tibet, China. Morphologically, the new species is closely similar to S. medogensis and S. divaricata, but S. sunhangii differs in having glabrous stems, longer spikes, glabrous rachis, double curved corolla and glabrous calyx, different stamens and style.

<p><strong><em>Lepidagathis sabui </em></strong><strong>(Acanthaceae), a new species from the lateritic plateaus of Konkan region of Maharashtra, India</strong></p>

Lepidagathis sabui, a new species of Acanthaceae is described and illustrated from the Konkan region of Maharashtra, India. It is closely related to L. prostrata, but differs by linear, spinulose, glabrous leaves, axillary spikes, recurved bracts and 5–7-nerved outer sepals. Coloured photographs and illustrations of new species and key to the Indian species having spinescent bracts, 5-partite calyx and 2-seeded capsule are provided to facilitate the identification.

A New Species and Lectotypification in Ruellia (Acanthaceae) from the Southeastern Atlantic Forest, Brazil

Abstract—Ruellia capotyra is described as a new species of Acanthaceae from the Atlantic Forest of Brazil, occurring in the states of Rio de Janeiro and Minas Gerais. This species was discovered during fieldwork in a natural forested area, and further details regarding its ecology and broader geographical distribution were clarified through the study of existing herbarium collections. Ruellia capotyra is a subshrub characterized by long-petiolate leaves, long-pedunculate, axillary, and compound dichasia, and rose-colored, long, and curved corollas. It differs from other species of Ruellia by its quadrangular, glabrescent branches and rachises, the absence of bracteoles, calyces with subulate, unequal lobes, and sparse, long-glandular trichomes. The new species is described and illustrated. Diagnostic characters and comments regarding its geographical distribution, phenology, and taxonomy are presented. Ruellia capotyra is compared with other species previously described in the genus and its infrageneric position is discussed. One of these species is Ruellia subsessilis, for which a lectotype is here designated and its authority corrected. An informal IUCN conservation assessment of the new species indicated that it should be considered as a threatened species, further highlighting the conservation significance of the Atlantic Forest as a whole.

Strobilanthes hongii, a new species of Acanthaceae from Guizhou, China

Strobilanthes hongii, a new species of Acanthaceae is described and illustrated from Libo, Guizhou, China. The new species is similar to S. pateriformis and S. truncata, but differs by the characters of leaf blade, bracteole and calyx and pollen grains. The new species is plietesial and grows in forest on limestone hills. The conservation status of S. hongii is assessed as “Vulnerable (VU)” according to the IUCN red list categories and criteria.

Strobilanthes kannanii – a new species of Acanthaceae from the Western Ghats, India

Strobilanthes kannanii, a new species of Acanthaceae from southern Western Ghats is described and illustrated. It shows similarity to S. sessilis in some vegetative, floral and palynological characters. Notes on the habitat, distribution, and affinities are also provided along with color images and line drawings.

Dicliptera francodavilae (Acanthaceae): A New Species from the Coastal Dry Forests of the Province of Guayas, Ecuador

Dicliptera francodavilae a new species of Acanthaceae from the remnant deciduous coastal dry forests, mainly from the area of Guayaquil, in the province of Guayas, western Ecuador, is here described and illustrated. It is distinguished from the 10 remaining species of the genus in Ecuador by having an inflorescence of terminal, rather loose racemes of umbels, cymule bracteoles narrowly elliptic-oblanceolate and pilose without and lilac to purple corollas, 15–25 mm long. Dicliptera francodavilae is assessed as Vulnerable (VU B1a, b, iii).

Ruellia anamariae, a new species of Acanthaceae from northern Brazil

Ruellia anamariae, a new species of Acanthaceae is herein described and illustrated from the municipalities of Parauapebas and São Geraldo do Araguaia, Pará State, Brazil. The new species is recognized by its habit, a shrub up to 5 meters high, by its terminal thyrsus inflorescence, by its greenish-yellow corolla with the expanded portion of the tube suburceolate, strongly revolute lobes and shortly exserted stamens. It is also morphologically similar to Ruellia exserta, but differs by its habit, a shrub (not liana), inflorescence, thyrsus with opposite dichasia (not secundiflorous thyrsus) and short exserted stamens (not long exserted), and to Ruellia beckii differing by its habit, a shrub (not liana) end calyx lobes oblong-lanceolate with acute apex (not oblanceolate to obovate with retuse to obtuse apex). We provide a detailed description, illustrations, comments, data on distribution and habitat and conservation status of the species.

Flora of Nam Kading National Protected Area I: a new species of yellow-flowered Strobilanthes (Acanthaceae), S. namkadingensis

A new species of Acanthaceae, Strobilanthes namkadingensis Soulad. & Tagane from Nam Kading National Protected Area, Bolikhamxay Province, central Laos, is described and illustrated. It is characterized by long spicate inflorescences consisting of 6-32 flowers, yellow corolla, the absence of long white hairs on the bracts and 4–6 seeds per capsule. Three DNA barcode regions of the partial genes for the large sub-unit ribulose-1,5-bisphosphate carboxylase oxygenase (rbcL) and maturase K (matK) and internal transcribed spacers (ITS) are also provided.

New species of Acanthaceae from Bolivia

New species of Acanthaceae from Bolivia

Clistax bahiensis (Acanthaceae), a new epiphytic species from Bahia, Brazil

A new species of Acanthaceae from southern Bahia state, Clistax bahiensis Profice & Leitman, is described and illustrated. A comparison with previously described taxa in the genus, C. brasiliensis Mart. and C. speciosus Nees reveals distinct characteristics from the formers such as dimorphic bracteoles (anterior oblong-lanceolate and posterior lanceolate) and red corolla, beside the remarkable epiphytic habit.

Two new species of Acanthaceae from Bolivia

Two new species of Acanthaceae, Stenandrium villarroelii J. R. I. Wood and Ruellia beniana J. R. I. Wood, are described from Bolivia. Both species are illustrated, differences with similar species are discussed, their distributions are mapped and their conservation status is assessed. These two species bring the total number of native Acanthaceae known from Bolivia to 172 species and five additional subspecies.

Strobilanthes biocullata (Acanthaceae), a New Species from Hunan, China

A new species of Acanthaceae, Strobilanthes biocullata Y. F. Deng & J. R. I. Wood, from China, is described and illustrated. The species is found in Hunan, Guangxi, and Guangdong provinces, where it grows on rocks along streams. It clearly belongs to the group of species placed by Bremekamp in Semnostachya Bremek., but differs from all these by two swollen bulges on the dorsal surface of the long-acuminate bracts. Strobilanthes biocullata is the first Chinese species of Strobilanthes Blume reported to have a plietesial life history.

Ruellia saccata, a New Species of Acanthaceae from Bolivia

Ruellia saccata Schmidt-Lebuhn & E. Tripp, a new species of Acanthaceae from Beni, Bolivia, with a highly distinctive corolla morphology, is described as new to science. The novelty resembles and is related to R. brevifolia (Pohl) C. Ezcurra, but differs in the presence of a pronounced corolla pouch, a longer corolla with a narrower orifice, and a spreading to procumbent habit. Its differences from and similarities to other species in the genus are also discussed, and an updated key to the red-flowered Bolivian species of Ruellia L. is presented.

Three new species of Acanthaceae from Ethiopia

Three new species of Acanthaceae, Lepidagathis pseudoaristata Ensermu, Acanthopale aethio-germanica Ensermu, and Rhinacanthus mucronatus Ensermu, are described from Ethiopia. The three species are illustrated and their distributions mapped. The three new species are also compared to their presumed closest relatives. L. pseudoaristata is restricted to the Bale and Sidamo Regions, A. aethio-germanica is more widely distributed in Ethiopia occurring in the Kefa, Arsi, Sidamo and Bale Regions, and R. mucronatus is a local endemic restricted to the Borana area in the Sidamo Region. The conservation status of each species is also assessed.