Dendrochloa C.E. Parkinson
Sometimes referred to Schizostachyum
Habit, vegetative morphology. Perennial. The flowering culms leafy. Culms 1500–2000 cm high; woody and persistent; to 11 cm in diameter; not scandent; branched above. Pluricaespitose. Rhizomes leptomorph. Plants unarmed. Leaves not basally aggregated; without auricular setae. Leaf blades linear-lanceolate; broad (long-acuminate); 50–90 mm wide; rolled; pseudopetiolate (the pseudopetiole about 1 cm long); without cross venation (these inconspicuous and remote); disarticulating from the sheaths; erect and conspicuous; not truncate (obtuse); 3–7 mm long.
Reproductive organization. Plants bisexual, with bisexual spikelets; with hermaphrodite florets.
Inflorescence. Inflorescence determinate; without pseudospikelets; paniculate (about 75 cm long, with verticils of branches); spatheate; not comprising ‘partial inflorescences’ and foliar organs. Spikelet-bearing axes ‘racemes’, or paniculate (?); persistent. Spikelets solitary.
Female-fertile spikelets. Spikelets about 40–60 mm long; compressed laterally; disarticulating above the glumes; disarticulating between the florets; with distinctly elongated rachilla internodes between the florets (the segments about 2 cm long). Rachilla prolonged beyond the uppermost female-fertile floret; the rachilla extension with incomplete florets. Hairy callus absent.
Glumes present; two; shorter than the spikelets; shorter than the adjacent lemmas (3–10 mm long); hairless; awnless (mucronate); non-carinate; similar (rigid). Spikelets with incomplete florets. The incomplete florets distal to the female-fertile florets. Spikelets without proximal incomplete florets.
Female-fertile florets 5–7. Lemmas about 1 cm wide; similar in texture to the glumes; not becoming indurated; entire; pointed; mucronate to awned (aristo-mucronate). Awns 1; median; apical; non-geniculate; much shorter than the body of the lemma. Lemmas hairless (but ciliate at the tip); glabrous; non-carinate; about 13 nerved. Palea present; relatively long (equalling the lemma, or longer); apically notched; awnless, without apical setae; several nerved (6 nerved between the keels, 5 nerved between them and the margins); 2-keeled. Palea keels wingless. Lodicules present; 3; membranous; ciliate; not toothed (narrowly obovate-oblong, 1 –1.2 cm long); heavily vascularized. Stamens 6; triadelphous (one free, and a pair and a triplet with connate filaments). Anthers 14 mm long; without an apically prolonged connective. Ovary glabrous; with a conspicuous apical appendage. The appendage long, stiff and tapering. Styles fused (into one). Stigmas 3 (the ‘style’ apex obscurely trifid).
Fruit, embryo and seedling. Fruit large (about 2 cm long); not noticeably compressed (ellipso-cylindric). Seed endospermic.
Taxonomy. Bambusoideae; Bambusodae; Bambuseae.
Distribution, ecology, phytogeography. 1 species; Burma.
Paleotropical. Indomalesian. Indo-Chinese.
References, etc. Morphological/taxonomic: Parkinson 1933.
Special comments. Anatomical data wanting.
Cite this publication as: Watson, L., and Dallwitz, M. J. (1992 onwards). ‘Grass Genera of the World: Descriptions, Illustrations, Identification, and Information Retrieval; including Synonyms, Morphology, Anatomy, Physiology, Phytochemistry, Cytology, Classification, Pathogens, World and Local Distribution, and References.’ http://biodiversity.uno.edu/delta/. Version: 18th August 1999. Dallwitz (1980), Dallwitz, Paine and Zurcher (1993 onwards, 1998), and Watson and Dallwitz (1994), and Watson, Dallwitz, and Johnston (1986) should also be cited (see References).