THREE NEW MALESIAN SPECIES OF GRAMINEAE

Illustrated descriptions of three new Malesian species (Racemobambos ceramica S. Dransfield, Nastus schmutzii S. Dransfield and Cymbopogon minutiflorus S. Dransfield) are presented.R. ceramica is compared with R. schultzei (Pilger) Holttum, and N.schmutzii with N. reholttumianus S. Soenarko. N. reholttumianus, so far found only in the island of Sumba,is recorded also as occurring in Flores. C. minutiflorus is the first representative of the genus in Sulawesi

Phylogenetic Relationships Among the One-Flowered, Determinate Genera of Bambuseae (Poaceae: Bambusoideae)

Bambuseae (woody bamboos), one of two tribes recognized within Bambusoideae (true bamboos), comprise over 90% of the diversity of the subfamily, yet monophyly of the tribe is generally only moderately supported, and phylogenetic relationships within the tribe are poorly understood. In addition, there appears to be some level of conflict between morphological and molecular data within the tribe. We conducted a parsimony analysis of 43 species of Bambuseae, three of Olyreae (herbaceous bamboos), and two outgroup taxa using morphological and plastid rpl16 intron sequence data to (1) further test the monophyly of Bambuseae, (2) test the monophyly of Chusqueinae and Hickelinae (the two one-flowered, determinate subtribes), and (3) examine the apparent conflict between molecular and morphological data sets in the determinate, one-flowered genera of Bambuseae. We recovered a monophyletic Bambusoideae, Bambuseae, Olyreae, and Chusqueinae, although support for Bambuseae remained moderate. Our results suggest that the morphological similarities between Chusqueinae and Hickelinae are homoplasious, but robust resolution of relationships among the major lineages of woody bamboos is still wanting

Book Review

Widjaja, E. A. 2019. The Spectacular Indonesian Bamboos. Design and printing Polagrade, ISBN 978-602-52326-0-2. Soft cover. Pp. 188, illustrated in full colour. Available [email protected]. Price $55

Vietnamosasa Nguyen 1990

Vietnamosasa Nguyen (1990: 221). Type:— Vietnamosasa darlacensis T.Q.Nguyen.Published as part of HAEVERMANS, Thomas, NGUYEN, Bich Loan, GURGAND, Jacques, HAEVERMANS, Agathe, DRANSFIELD, Soejatmi & DIEP, My Hanh, 2013, Clearing up Vietnamosasa (Poaceae, Bambusoideae): typification and nomenclature of a distinctive paleotropical bamboo genus, pp. 57-60 in Phytotaxa 137 (1) on page 58, DOI: 10.11646/phytotaxa.137.1.7, http://zenodo.org/record/508631

Vietnamosasa darlacensis Nguyen 1990

Vietnamosasa darlacensis Nguyen (1990: 221). Type:— VIETNAM. Đắk Nông: Yok Don, 12°52’49”N, 107°48’01”E, 200 m elevation, 30 May 2012, My Hanh DIEP 285 (neotype here designated: P02280067!; isoneotypes P02280069!, P02280068!, P02280066!, P02280065!, P02280064!, P02280063!; K!, KUN!, MO!, SING!, RUPP!, VNM!). Note:— The missing holotype citation is as follows: Vietnam. Darlac Province [actual Đắk L ắk + Đắk Nông provinces]: silva montana, 600-1500 m elevation, 4 September 1973, Nguyen Vu Can s.n. (HNF [actual VNF, lost]). Original diagnosis: “Affinitas. A specie proxima V. ciliata (A.Camus) Nguyen paleis apice rotundatis differ.” The original specimen cannot be located in the herbaria where it may have been transferred for original study by Mrs. Nguyen (LE & HNF). We cannot exclude the possibility that the type is destroyed. No original reference specimen exists and no illustration of the taxon has ever been published. In order to ensure accurate application of the name, we decided to designate a neotype based on a new collection of the only taxon matching the protologue that was growing in the type locality. The scans of the specimen, as well as pictures of the plant taken in the field will be made available on Paris SONNERAT herbarium database (http:// coldb.mnhn.fr).Published as part of HAEVERMANS, Thomas, NGUYEN, Bich Loan, GURGAND, Jacques, HAEVERMANS, Agathe, DRANSFIELD, Soejatmi & DIEP, My Hanh, 2013, Clearing up Vietnamosasa (Poaceae, Bambusoideae): typification and nomenclature of a distinctive paleotropical bamboo genus, pp. 57-60 in Phytotaxa 137 (1) on page 58, DOI: 10.11646/phytotaxa.137.1.7, http://zenodo.org/record/508631

Vietnamosasa pusilla Nguyen 1990

Vietnamosasa pusilla (A.Chev. & A.Camus) Nguyen (1990: 222). Basionym: Arundinaria pusilla Chevalier & Camus (1921: 450). Type:— VIETNAM. Annam: Lang bian, Dran, 1000-1200 m elevation, A . Chevalier 40600 (lectotype here designated: P02581779!). Neomicrocalamus pusillus (A.Chev. & A.Camus) Demoly (1995: 14). Note:—The syntype series cited in the protologue mentions three numbers, Chevalier 40330, 40508 and 40600. Of these, only Chevalier 40600 was found at the Paris herbarium; the type folder also contained a series of plants bearing the number Chevalier 40506. The discrepancy between the collection number of one of the syntypes published in the original description “ Chevalier 40508 ” and the only Vietnamosasa specimens found at P bearing a Chevalier label (“ Chevalier 40506 ”) may be a typographic error in the original publication. However, as we cannot locate the specimens labeled Chevalier 40330, we cannot exclude the possibility that Chevalier 40508 does exist and that the specimen labeled Chevalier 40506 was not intended to be part of the original syntype series by the authors. We thus choose the only available unambiguous specimen, Chevalier 40600, as the lectotype.Published as part of HAEVERMANS, Thomas, NGUYEN, Bich Loan, GURGAND, Jacques, HAEVERMANS, Agathe, DRANSFIELD, Soejatmi & DIEP, My Hanh, 2013, Clearing up Vietnamosasa (Poaceae, Bambusoideae): typification and nomenclature of a distinctive paleotropical bamboo genus, pp. 57-60 in Phytotaxa 137 (1) on page 59, DOI: 10.11646/phytotaxa.137.1.7, http://zenodo.org/record/508631

New insights into intergeneric relationships of Hickeliinae (Poaceae: Bambusoideae) revealed by complete plastid genomes

The Hickeliinae (Poaceae: Bambusoideae) is an ecologically and economically significant subtribe of tropical bamboos restricted to Madagascar, Comoros, Reunion Island, and a small part of continental Africa (Tanzania). Because these bamboos rarely flower, field identification is challenging, and inferring the evolutionary history of Hickeliinae from herbarium specimens is even more so. Molecular phylogenetic work is critical to understanding this group of bamboos. Here, comparative analysis of 22 newly sequenced plastid genomes showed that members of all genera of Hickeliinae share evolutionarily conserved plastome structures. We also determined that Hickeliinae plastome sequences are informative for phylogenetic reconstructions. Phylogenetic analysis showed that all genera of Hickeliinae are monophyletic, except for Nastus, which is paraphyletic and forms two distant clades. The type species of Nastus (Clade II) is endemic to Reunion Island and is not closely related to other sampled species of Nastus endemic to Madagascar (Clade VI). Clade VI (Malagasy Nastus) is sister to the Sokinochloa + Hitchcockella clade (Clade V), and both clades have a clumping habit with short-necked pachymorph rhizomes. The monotypic Decaryochloa is remarkable in having the longest floret in Bambuseae and forms a distinct Clade IV. Clade III, which has the highest generic diversity, consists of Cathariostachys, Perrierbambus, Sirochloa, and Valiha, which are also morphologically diverse. This work provides significant resources for further genetic and phylogenomic studies of Hickeliinae, an understudied subtribe of bamboo