Lepironia Pers. (Persoon 1805: 70)

Rasaminirina, Fitiavana & Larridon, Isabel, 2023, The genera of Cyperaceae of Madagascar, Plant Ecology and Evolution 156 (3), pp. 276-310 : 276

publication ID

https://dx.doi.org/10.5091/plecevo.98847

persistent identifier

https://treatment.plazi.org/id/E2239850-89C8-55DF-8CE3-55EF5F47CE39

treatment provided by

by Pensoft

scientific name

Lepironia Pers. (Persoon 1805: 70)
status

 

Lepironia Pers. (Persoon 1805: 70) View in CoL

Type species.

Lepironia mucronata Rich. [= Lepironia articulata (Retz.) Domin]

Description of the genus.

Medium-sized to tall perennials; rhizomes woody, creeping with thick roots. Culms scapose, erect, terete, with transverse septa. Basal leaves, reduced to a sheath, open in front, the margins overlapping, eligulate. Involucral bracts 1, large, subulate, cylindric, erect, culm-like. Inflorescence a single spike, pseudolateral, with many spirally arranged imbricate glume-like bracts; basal glume-like bracts empty, most subtending spicoids. Spicoids with 2 outer strongly keeled glumes and many non-keeled glumes, most subtending 1 stamen and a solitary apparently terminal female flower; rachilla thick and spongy. Florets unisexual; perianth absent. Stamens 1; anthers linear, apiculate; filaments highly accrescent. Style deeply 2-fid, long, slender; base not distinct, slightly thickened, persistent. Nutlets obovoid, dorsiventrally compressed, plano-convex, ± winged along the margins, beaked.

Distribution and ecology.

Lepironia occurs in Madagascar, and in tropical and subtropical Asia to the Western Pacific ( POWO 2022). It grows in freshwater wetlands near sea level. In Madagascar, the single species of Lepironia , i.e. Lepironia articulata (Fig. 1 View Figure 1 ), occurs along the east coast.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Poales

Family

Cyperaceae