Grass Genera of the World

L. Watson and M. J. Dallwitz


Sinochasea Keng

Sometimes referred to Pseudodanthonia

Habit, vegetative morphology. Perennial; caespitose. Culms herbaceous. Leaves non-auriculate. Sheath margins free. Leaf blades narrow; setaceous; not pseudopetiolate; without cross venation; an unfringed membrane; truncate; 0.5–1 mm long.

Reproductive organization. Plants bisexual, with bisexual spikelets; with hermaphrodite florets.

Inflorescence. Inflorescence paniculate; contracted; espatheate; not comprising ‘partial inflorescences’ and foliar organs. Spikelet-bearing axes persistent. Spikelets not secund; pedicellate.

Female-fertile spikelets. Spikelets 10–12 mm long; compressed laterally to not noticeably compressed; disarticulating above the glumes. Rachilla prolonged beyond the uppermost female-fertile floret; the rachilla extension naked. Hairy callus present.

Glumes two; more or less equal; long relative to the adjacent lemmas (exceeding them); pointed (acute); awnless; carinate; similar. Lower glume 5(–6) nerved. Upper glume (4–)5 nerved. Spikelets with female-fertile florets only; without proximal incomplete florets.

Female-fertile florets 1. Lemmas not convolute; similar in texture to the glumes (firm); not becoming indurated; incised (deeply notched); awned. Awns 1; median; from a sinus; geniculate; entered by one vein. Lemmas hairy; non-carinate; without a germination flap; 5 nerved. Palea present; relatively long; 2-nerved. Lodicules present; 2; free; membranous; glabrous; not toothed; not or scarcely vascularized. Stamens 3. Ovary glabrous. Styles free to their bases. Stigmas 3.

Taxonomy. Pooideae; Poodae; Aveneae.

Distribution, ecology, phytogeography. 1 species; China.

Holarctic. Boreal. Eastern Asian.

Special comments. 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).

Index