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| Fig. 2 Cochinchinochloa braianaH.N.Nguyen & V.T.Tran. a. Habitat; b. rhizome with short necks; c. branches with middle one dominant; d. internode with thick swollen patella and bud; e. base of culm leaf; f. leafy flowering branch; g. section of leafy branch with under leaves surface; h. section of leafy branch with upper leaves surface; i. section of internode of leafy branch with thick swollen patella; j. stigmas; k. lodicules; l. ventral view of culm leaf with auricles; m. dorsal view of culm leaf; n. culm leaf; o, p. section of flowering branches; q, r. pseudospikelets with two florets; s. 2-keeled, grooved palea; t. lodicules and stamens; u. floret; v. caryopsis. Photos: Tran Van Tien from the type locality |
Abstract
A clambering bamboo endemic to Braian mountain, southern Vietnam represents a new monotypic endemic genus, Cochinchinochloa H.N.Nguyen & V.T.Tran (Gramineae: Bambusoideae-Bambusinae), which is described and illustrated. Its culm nodes and the nodes of leafy branches exhibit a thick swollen patella, and in the reproductive state this taxon bears pseudospikelets having two perfect florets, with an elongated rachilla internode between the perfect florets, a rachilla extension bearing an imperfect floret at maturity, a narrowly 2-keeled palea with a distinct abaxial groove, three lodicules, six stamens, free filaments, a glabrous ovary with a long style and three stigmas, and an oblong caryopsis with a relatively thin pericarp.
Keywords: Bambusoideae, Bambusinae, Cochinchinochloa, Cochinchinochloa braiana, New Genus, Taxonomy
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| Cochinchinochloa braiana H.N.Nguyen & V.T.Tran. |
Cochinchinochloa H.N.Nguyen&V.T.Tran,gen. nov.—Fig.1
Type species. Cochinchinochloa braiana H.N.Nguyen&V.T.Tran.
Etymology.ThegenericepithetreferstotheCochinchinearea(southernVietnam,whichincludesBraianmountain,LamdongProvincewherethespeciesislocated),and-chloa:grass.Thespecificepithetreferstothetypelocality,Braianmountain,DiLinhDistrict,LamdongProvince,Vietnam.
Nguyen, H.N.; Tran, V.T.; Hoang, T.T. 2013. Cochinchinochloa (Gramineae: Bambusoideae-Bambusineae), A New Bamboo Genus Endemic to Braian mountain, southern Vietnam. Blumea - Biodiversity, Evolution and Biogeography of Plants, 58(1); 28-32(5).