Polliniopsis Hayata
Habit, vegetative morphology. Decumbent (culm bases creeping, with rooting nodes). Culms 30–40 cm high; herbaceous. Leaf blades lanceolate; narrow; to 5 mm wide; without cross venation; truncate.
Reproductive organization. Plants bisexual, with bisexual spikelets; with hermaphrodite florets. The spikelets homomorphic.
Inflorescence. Inflorescence of spicate main branches, or paniculate (?- ‘of paired racemes’); non-digitate; espatheate; not comprising ‘partial inflorescences’ and foliar organs. Spikelet-bearing axes ‘racemes’; paired (slender, recurved, about 8 cm long); persistent (?-rachis tough). ‘Articles’ linear. Spikelets paired; pedicellate; consistently in ‘long-and-short’ combinations; unequally pedicellate in each combination. Pedicels of the ‘pedicellate’ spikelets free of the rachis. The ‘shorter’ spikelets hermaphrodite. The ‘longer’ spikelets hermaphrodite.
Female-fertile spikelets. Spikelets 5 mm long; compressed dorsiventrally; falling with the glumes. Rachilla terminated by a female-fertile floret. Hairy callus present.
Glumes two; long relative to the adjacent lemmas; awned; very dissimilar (the G1 2-aristate with 1 mm aristules, the G2 acuminate into an 8 mm awn). Lower glume flattened on the back; not pitted; relatively smooth. Spikelets with incomplete florets. The incomplete florets proximal to the female-fertile florets. Spikelets with proximal incomplete florets. The proximal incomplete florets 1; epaleate; sterile. The proximal lemmas hyaline, linear, 2-toothed; awned (the awn long, geniculate, from the sinus); more or less equalling the female-fertile lemmas; similar in texture to the female-fertile lemmas.
Female-fertile florets 1. Lemmas linear, similar to the L1 in texture and form; less firm than the glumes (hyaline); incised; 2 lobed; not deeply cleft (bidentate); awned. Awns 1; median; from a sinus; geniculate; hairy; much longer than the body of the lemma (about 10 mm long). Lemmas hairless; non-carinate; without a germination flap. Palea present, or absent (?); if present, very reduced. Lodicules present; 2; free; fleshy; glabrous. Ovary glabrous (?). Stigmas 2.
Fruit, embryo and seedling. Hilum short.
Taxonomy. Panicoideae; Andropogonodae; Andropogoneae; Andropogoninae.
Distribution, ecology, phytogeography. 1 species; Formosa.
Paleotropical. Indomalesian. Indo-Chinese.
References, etc. Morphological/taxonomic: Hayata 1918.
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).