Pyrrhanthera Zotov

Details

Name scientific

Pyrrhanthera Zotov (1963)

Preferred name

Rytidosperma Steud.

Taxonomy reference

Garnock-Jones, P.J. 2014: Evidence-based review of the taxonomic status of New Zealand’s endemic seed plant genera. New Zealand Journal of Botany 52(2): 163–212.

Nomenclature

Original authors

Zotov

Authors

Zotov

Year published

1963

Nomenclatural code

ICN

Basionym

Pyrrhanthera Zotov

Taxonomic rank

genus

Canonical form

Pyrrhanthera

Classification

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Poales

Family

Gramineae

Genus

Pyrrhanthera

Subordinates

Pyrrhanthera exigua

Descriptions

Zotov, V.D. 1963: Synopsis of the grass subfamily Arundinoideae in New Zealand. New Zealand Journal of Botany 1: 78–136.

Pyrrhanthera Zotov

Description

Plant up to 3 cm high, mat forming rhizomatous; leaves folded, silica cells round to dumb-bell shaped; panicle of 1-2 spikelets; spikelets ovoid, 2-3-flowered; glumes ovate ± completely encasing the spikelet, 7-9-nerved, glabrous, ± coriaceous; lemmas ± ovate, minutely 3-toothed, coriaceous, 9-nerved, short pilose; lodicules 2, ± truncate, ciliate; stamens 3, anthers red; styles 2; fruit a nut; hilum basal, round spot; embryo 1/3 to ½ length of grain.

Diagnosis

Gramen ad 3 cm altum, tegetem formans densam, rhizomatosum; folia plicata, cellulae siliceae rotundae vel halteriformes; panicula 1-2- spiculis; spiculae ovoideae, 2-3-florae; glumae ovatae ± omnino spiculam amplectentes, 7-9-nerves., glabrae, ± coriaceae; lemmata ± ovata, minute tridentata coriacea, 9-nervia, breve pilosa; lodiculae 2, ± truncatae ciliatae; stamina 3, antherae rubrae: styli 2; fructus nuciformis; hilum basale, rotundum; embryo tertia pas vel dimidium caryopsis longitudine.