Germainia Balansa & Poitr.

Genus

Angiosperms > Poales > Poaceae

Characteristics

Compactly tufted perennials (in Australia), erect from base. Leaves: ligule a short hair-fringed membrane; blade linear. Inflorescence terminal, a solitary capitate raceme, or digitate or subdigitate infloresence of 2–6 racemose branches; sometimes with basal spikelet pairs reduced to sessile spikelets and forming an involucre. Spikelets paired, with one sessile and male, and the other pedicellate and bisexual. Sessile spikelets with lower glume typically obscuring pedicellate spikelet; glumes unequal and very dissimilar, with the upper glume longer and seen as an emergent tip past the truncated apex of the lower glume, flattened on back, acuminate, chartaceous, the lower glume convex or flattened on back, broadly truncate and often irregularly dentate, coriaceous to indurated; 2-flowered, the lower floret male with lemma lanceolate, linear or oblong, hyaline, palea hyaline, the upper floret male with lemma entire, hyaline, palea membranous. Pedicellate spikelets lanceolate or linear-lanceolate, usually smaller than sessile spikelets, the lower floret rarely present as sterile lemma, the upper floret, bisexual with awned lemma and reduced palea (see discussion in notes); pedicel free of rachis. Caryopsis oblong.
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Perennial or annual. Leaf blades linear; ligule short, membranous. Inflorescence terminal, composed of 1 or 2(–6) digitate racemes; racemes with large imbricate persistent sessile spikelets covering smaller pedicelled deciduous spikelets; rachis internodes tough, short, or almost absent and then inflorescence capitate and sessile spikelets forming an involucre, the lower sometimes lacking a pedicelled spikelet. Sessile spikelet male or barren, dorsally compressed, florets usually 2; lower glume lanceolate to oblong, leathery or papery, broadly convex, 7–9-veined, apex truncate or denticulate or retuse; upper glume longer and narrower than lower glume, membranous, 3-veined, apex truncate; upper lemma awnless or rarely mucronate. Pedicelled spikelet fertile, subterete, floret 1(–2); callus pungent, obliquely attached to pedicel; lower glume apex truncate; lower floret usually suppressed; upper lemma entire, stipitiform, awned; awn geniculate, pubescent. Lodicules absent. Stamens 2.
Life form perennial
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Foliage retention deciduous
Sexuality hermaphrodite
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Hardiness (USDA) 8-12

Usage

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Cultivation

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Distribution

Germainia world distribution map, present in Australia, China, Lao People's Democratic Republic, Myanmar, Thailand, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:18116-1
WFO ID wfo-4000015574
COL ID 8VXTX
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Balansochloa Germainia

Lower taxons

Germainia khasyana Germainia lanipes Germainia pilosa Germainia capitata Germainia tenax Germainia truncatiglumis Germainia thailandica Germainia grandiflora Germainia thorelii