TL;DR: Four species of Anisotes Nees (Acanthaceae) are described from northern and west-central Madagascar, all of them endemic to the island, and Morphological features previously unknown in the genus are noted for A. hygroscopicus and A. perplexus.
Abstract: Four species of Anisotes Nees (Acanthaceae) are described from northern and west-central Madagascar: A hygroscopicus T F Daniel, Letsara & Martin-Bravo, A perplexus T F Daniel, Letsara & Martin-Bravo, A subcoriaceus T F Daniel, Letsara & Martin-Bravo, and A venosus T F Daniel, Letsara & Martin-Bravo A key to the six species of the genus known from Madagascar, all of them endemic to the island, is provided Morphological features previously unknown in the genus are noted for A hygroscopicus and A venosus (hygroscopic trichomes on seeds), A subcoriaceus (2-colporate, pseudocolpate pollen lacking insulae), and A perplexus (2-pororate pollen) None of these species can be treated with certainty in any of the currently recognized sections of Anisotes Data pertinent to the conservation status of each species are provided
TL;DR: The new species Podorungia gesnerioides Onjalalaina & I. Darbysh is described and illustrated and its affinities to the other species in the genus are discussed, and a brief review of current progress on the taxonomy of the Acanthaceae of Madagascar is provided.
Abstract: The new species Podorungia gesnerioides Onjalalaina & I. Darbysh. is described and illustrated and its affinities to the other species in the genus are discussed. It is the only species in Podorungia with an open dichasial inflorescence. This new species is assessed as globally "Endangered" following the Categories and Criteria of IUCN, because of threats to its lowland forest habitat. The generic delimitation of the Malagasy genera in the tribe Barlerieae is discussed and the similarities of the five endemic genera to the tropical African genus Crabbea are noted. A key to the genera of Barlerieae in Madagascar is provided, based on the key in Benoist’s Flore de Madagascar et des Comores account of the Acanthaceae. In addition, a brief review of current progress on the taxonomy of the Acanthaceae of Madagascar is provided.
Cites background from "Four New Species of Anisotes (Acant..."
...In addition, a number of new species have been described and taxonomic issues resolved in several genera including Anisotes Nees (Daniel et al. 2007, 2013), Barleria (Darbyshire et al. 2014), Mendoncia Vell. ex Vand....
TL;DR: A new species and a new combination in Anisotes Nees are proposed for the acanthaceous flora of the Comoros Archipelago and a preliminary list of Acanthaceae in the Islands is published.
Abstract: DANIEL, T. F. (2014). Taxonomy of Anisotes Nees (Acanthaceae: Justicieae) in the Comoros Archipelago and a preliminary list of Acanthaceae in the Islands. Candollea 69: 45–54. In English, English and French abstracts. A new species and a new combination in Anisotes Nees are proposed for the acanthaceous flora of the Comoros Archipelago. The new species, Anisotes mayottensis T. F. Daniel, is known only from Mayotte, and can be distinguished from its Comoran congener by its unequally five-lobed (4+1) or equally four-lobed calyx; longer corolla, stamens, and thecae; and fouraperturate pollen. Anisotes comorensis (Lindau) T. F. Daniel, based on Himantochilus comorensis Lindau, is proposed for a species endemic to Grande Comore. A lectotype is designated for Himantochilus comorensis. Both species are described, mapped, and distinguished by a key; Anisotes mayottensis is also illustrated. All Acanthaceae known from the archipelago are listed in a table.
TL;DR: Characters ofinflorescence, androecium, pollen and seeds proved particularly helpful in describing the 16 sections and 7 subsections of the genus Justicia.
Abstract: Summary. The genus Justicia L. is surveyed using general morphological techniques, and a broad definition of the genus is adopted. Characters ofinflorescence, androecium, pollen and seeds proved particularly helpful in describing the 16 sections and 7 subsections. The 295 species used in the study are listed and 69 new specific names are published under Justicia.
"Four New Species of Anisotes (Acant..." refers background in this paper
..., but they are rare among Justicieae (e.g., acuminate-caudate acropetally; corollas yellow with lower Justicia tenella (Nees) T. Anderson; Daniel & lip darker yellow, 35–45 mm, externally pubescent with eglandular trichomes; pollen 2-pororate; capsules 8.5–13Figueiredo, 2009)....
...Delimitation and infra-generic somewhat camptodrome-reticulate veined bracts (vs. classification of Justicia (Acanthaceae)....
...The epithet derives from the per- bracts subcoriaceous, 4.5–10.5 3 4.5–8 mm; corollas pale plexing pollen of this species, which among Acan- cream-yellow to yellow-green and with maroon markings, 31–41 mm, externally pubescent with both glandular andthaceae is otherwise known only in tribes Justicieae: eglandular trichomes; and pollen 2-colporate and 4- Isoglossinae and Whitfieldieae. pseudocolpate....
...Recent collections from Madagascar phologically similar to Justicia, and may not be also appear to represent species of Anisotes (e.g., distinct from it because each of these characteristics Letsara et al. 874 at CAS, MO, and TAN), but have can be found among the ca. 700 currently recognized insufficient material to characterize fully and thus species of the latter genus. determine their taxonomic status....
...Leaves petiolate, known only among Justicieae: Isoglossinae (Kiel et petioles to 19 mm, blades subcoriaceous, elliptic, al., 2006) and Whitfieldieae (Manktelow et al., 2001)....
TL;DR: Phylogenetic relationships of Isoglossinae were studied with a taxon sample including all but one genus putatively placed in the lineage and a dataset composed of DNA sequences from three genic regions, finding very little variation among these taxa.
Abstract: Phylogenetic relationships of Isoglossinae (Acanthaceae: Justicieae) were studied with a taxon sample including all but one genus putatively placed in the lineage and a dataset composed of DNA sequences from three genic regions (nrITS, cp trnS/G, trnT/L). Two members each of the lineages of Justicieae previously shown to be phylogenetically adjacent to Isoglossinae were included to test monophyly of Isoglossinae. The Malagasy genera Forcipella and Populina were excluded from Isoglossinae by our analysis. The former was placed outside of Justicieae. The latter was placed with plants representing the Tetramerium lineage of Justicieae. Our results do not provide strong support for placement of Ptyssiglottis with Isoglossinae but also cannot refute this placement. Core Isoglossinae (i.e., members of Old World Conocalyx, Isoglossa, Brachystephanus and New World Kalbreyeriella, Stenostephanus s.1., Razisea) are monophyletic; these plants share "Gurtelpollen", hypothesized to be a morphological synapomorphy for the group. Malagasy Conocalyx is part of the clade that includes all sampled species of lsoglossa and does not seem distinct from the latter genus. Sister to Isoglossa (including Conocalyx) is a lineage including all sampled species of Brachystephanus plus all New World Isoglossinae. Plants belonging to this last clade share monothecous stamens as a morphological synapomorphy. Our data do not support but cannot refute reciprocal monophyly of Brachystephanus and New World Isoglossinae. There is, in fact, very little variation among these taxa such that the problem is lack of resolution rather than support for relationships that conflict with current taxonomy. NW plants in particular are richly diverse in morphology and it is remarkable that this diversification is not reflected in variation in these three DNA regions.
TL;DR: Relationships of the enigmatic genera Whitfieldia, Chlamydacanthus, and Lankesteria (Acanthaceae) were examined using molecular sequence data for two chloroplast loci for these and a sample of taxa representing all major lineages within the family and a number of morphological synapomorphies for Whitfieldieae were proposed.
Abstract: Relationships of the enigmatic genera Whitfieldia, Chlamydacanthus, and Lankesteria (Acanthaceae) were examined using molecular sequence data for two chloroplast loci (ndhF gene, trnL-trnF spacer and intron) for these and a sample of taxa representing