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DELTA sample data

M. J. Dallwitz and L. Watson

Bambusa Schreber

Including Arundarbor Kuntze, Bonia Balansa, Criciuma Soderstrom & Londoño, Dendrocalamopsis (Chia & Fung) Keng f., Eremocaulon Soderstrom & Londoño, Guadua Kunth, Ischurochloa Büse, Leleba Nakai, Lingnania McClure, Tetragonocalamus Nakai – cf. Clayton and Renvoize (1986). Soderstrom and Ellis (1987) refer Criciuma, Eremocaulon and Guadua to their subtribe Guaduinae, along with Olmeca, and place Tetragonocalamus in the Arundinariinae, but revised generic descriptions adequate for the present purpose are not available.

Habit, vegetative morphology. Perennial. Culms (200–)500–3500 cm high; woody and persistent; branched above. Culm nodes glabrous. Leaf blades pseudopetiolate. Ligule an unfringed membrane to a fringed membrane.

Inflorescence. Plants bisexual, with bisexual spikelets. Inflorescence of pseudospikelets, these solitary or in tufts, fascicles or capitula on leafless branches; open; a complex of ‘partial inflorescences’ and intervening foliar organs. Spikelet-bearing axes persistent. Spikelets not secund.

Female-fertile spikelets, florets, fruit. Spikelets 10–80 mm long; compressed laterally to not noticeably compressed; disarticulating above the glumes; disarticulating between the florets. Rachilla prolonged beyond the uppermost female-fertile floret. Hairy callus absent. Glumes two; more or less equal; shorter than the adjacent lemmas; awnless; carinate. Upper glume 7–18 nerved. Spikelets with incomplete florets. The incomplete florets distal to the female-fertile florets, or both distal and proximal to the female-fertile florets. The proximal incomplete florets 0–3 (? – fewer than 4); sterile. The proximal lemmas awnless. Female-fertile florets 1–20 (–‘many’). Lemmas entire; blunt; awnless (usually), or mucronate (Guadua); carinate to non-carinate; 9–22 nerved. Palea present; relatively long. Lodicules present; membranous; ciliate. Stamens 6. Ovary hairy. Stigmas 3 (usually?). Hilum long-linear.

Photosynthetic pathway, leaf blade anatomy. C3; XyMS+. Mesophyll with arm cells; with fusoids. Midrib conspicuous; having complex vascularization. All the vascular bundles accompanied by sclerenchyma.

Taxonomy, distribution. Bambusoideae; Bambusodae; Bambuseae. About 120 species. Holarctic, Paleotropical, Neotropical, and Australian.

Anatomical references. Metcalfe 1960; this project.

We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa. See also Guidelines for using data taken from Web publications.

Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 1998 onwards. DELTA sample data: descriptions, illustrations, identification, and information retrieval. Version: 19th October 2016.’.