Indosasa McLure
Habit, vegetative morphology. Perennial (shrub). The flowering culms leafy. Culms woody and persistent; cylindrical; branched above. Culm nodes 2 ridged. Primary branches/mid-culm node usually 3. Rhizomes leptomorph. Leaves not basally aggregated; with auricular setae. Leaf blades broad (large); not cordate, not sagittate; pseudopetiolate; disarticulating from the sheaths.
Reproductive organization. Plants bisexual, with bisexual spikelets; with hermaphrodite florets.
Inflorescence. Inflorescence weakly indeterminate; with pseudospikelets; ‘comprising short espatheate branches loosely grouped about a node’, the spikelets in tight clusters; spatheate, or espatheate; a complex of ‘partial inflorescences’ and intervening foliar organs, or not comprising ‘partial inflorescences’ and foliar organs (‘I. hispidula approaches a compound inflorescence, with spathiform bracts’). Spikelet-bearing axes persistent. Spikelets solitary; sessile.
Female-fertile spikelets. Spikelets compressed laterally (?); disarticulating above the glumes; disarticulating between the florets. Rachilla prolonged beyond the uppermost female-fertile floret; the rachilla extension with incomplete florets.
Glumes two; similar. Spikelets with incomplete florets. The incomplete florets distal to the female-fertile florets. Spikelets without proximal incomplete florets.
Female-fertile florets 3–20 (‘several to many’). Lemmas leathery; awnless (?). Lodicules present; 3; membranous; ciliate to glabrous; heavily vascularized. Stamens 6. Anthers without an apically prolonged connective. Ovary without a conspicuous apical appendage. Styles fused. Stigmas 3.
Fruit, embryo and seedling. Fruit large (8 mm long in I. sinica); ellipsoid.
Taxonomy. Bambusoideae; Bambusodae; Bambuseae.
Distribution, ecology, phytogeography. 12 species; Asia, especially China and Vietnam. Shade species; glycophytic. Forest and roadsides.
Paleotropical. Indomalesian. Indo-Chinese.
References, etc. Morphological/taxonomic: Chao and Chu 1983, Chao and Renvoize 1989.
Special comments. Morphological description poor. Fruit data wanting. 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).