Dysphania pusilla (Hook.f.) Mosyakin & Clemants

Caption:

Details

Name scientific

Dysphania pusilla (Hook.f.) Mosyakin & Clemants, J. Bot. Res. Inst. Texas 2: 427 (2008)

Preferred name

Dysphania pusilla (Hook.f.) Mosyakin & Clemants

Taxonomy reference

Mosyakin, S.L.; Clemants, S.E. 2008: Further transfers of glandular-pubescent species from Chenopodium subg. Ambrosia to Dysphania (Chenopodiaceae). Journal of the Botanical Research Institute of Texas 2(1): 425–431.

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Endemic

Wild

New Zealand

Political Region

Webb, C.J.; Sykes, W.R.; Garnock-Jones, P.J. (1988)

Nomenclature

Combination authors

Mosyakin & Clemants

Original authors

Hook.f.

Authors

(Hook.f.) Mosyakin & Clemants

Publication place

Year published

2008

Publication page

427

Nomenclatural code

ICN

Basionym

Chenopodium pusillum Hook.f.

Taxonomic rank

species

Canonical form

Dysphania pusilla

Classification

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Caryophyllales

Family

Amaranthaceae

Genus

Dysphania

Species

pusilla

Synonyms

Descriptions

Allan, H.H. 1961: Flora of New Zealand. Vol. I. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledones. Government Printer, Wellington.

Chenopodium pusillum Hook.f.

Description

Decumbent branching glandular-pubescent herb up to 15 cm. diam., with stout deeply descending main root; branches slender, lfy, radiating. Lvs on slender petioles up to 5 mm. long; lamina pubescent on both surfaces, thin, 3-5-(10) × 2-5-(10) mm.; broad- to ovate-oblong, entire, occ. slightly sinuate. Most lvs do not exceed 5 × 5 mm., but occ. specimens have some lvs of greater dimensions. Fls minute, in axillary clusters; per. segs 4, narrow-oblong, pubescent. Stamen us. 1; utricle ovate in outline, erect, compressed; pericarp free.

Webb, C.J.; Sykes, W.R.; Garnock-Jones, P.J. 1988: Flora of New Zealand. Vol. IV. Naturalised Pteridophytes, Gymnosperms, Dicotyledons. Botany Division DSIR, Christchurch.

Chenopodium pusillum Hook.f.

Description

Annual, puberulent and glandular-scaly herb. Stems branching, decumbent, 3-10-(20) cm long, often forming a small flat cushion. Petioles usually 1-3-(5) mm long, slender. Lamina 2-4-(10) × 2-4-(10) mm, suborbicular, broadly ovate or ovate-oblong, glandular-puberulent on both sides, usually entire or slightly sinuate, occasionally shallowly lobed; base broad-cuneate to rounded; apex obtuse. Fls minute, in axillary, sessile glomerules. Perianth segments (3)-4-(5), narrow-oblong, membranous at least on margins, glandular- puberulent and farinose, scarcely accrescent, not completely investing fr. Stamen usually 1. Seed vertical, 0.5-0.8 mm long, laterally compressed, broadly ellipsoid or subglobose, flattened; pericarp easily detached; testa glossy, minutely punctate or almost smooth.